Solid State Relays
General Description and Quick Selection Guide...........................................E2
Series SAS Panel Mount “Hockey Puck” Relays...........................................E4
Series SAR DIN-Rail Mount Relays...............................................................E6
Accessories................................................................................................E10
Application Notes........................................................................................E12
Technical Information..................................................................................E20
Wiring Diagrams.........................................................................................E22
Dimensions.................................................................................................E23
Solid State
Relays
E
E1
SSNA2012
visit www.sprecherschuh.com/ecatalog for the most up to date information
Series SAS(R)
Solid State
Relays
Reliable performance for
millions of operations up
to 100 amps
®
Sprecher + Schuh’s SA line of solid
state relays are the ideal solution
for applications where high speed
switching and long life are essential.
In specific applications, solid state
relays offer many advantages over
electromechanical devices including
no moving parts or contact arcing. In
addition, solid state relays are directly
compatible with logic components
such as microprocessors and PLCs.
Broad selection for many
applications
Common Applications
Heating controls
SAS/R
Solid State
Relays
E
Injection molding machines
Semiconductor manufacturing
equipment
Glass processing
Welding controls
Food processing
Industrial & commercial ovens
Soldering machines
Medical equipment
Office machinery
Robotics
Sprecher + Schuh solid state relays are
available in single phase “hockey puck”
models up to 75 amps and DIN-rail
mount units with integral heatsink up
to 100 amps. Three phase models up
to 25 amps are also available.
Opto-isolated input limits
current leakage
Benefits of SAS(R) Relays
• High Performance
• Direct bonded copper technology
• 100% Tested
• Zero-crossing
• Output voltages to 660 VAC
• AC or DC control signals and
AC output relays
• Compact, innovative designs
• UL/CSA
Common Applications
Solid State Relays are used in a variety
of commercial and industrial applications, such as the following examples.
• Heating Controls
• Industrial Process Controls
• Induction Furnaces
• Laundry Equipment
• Plastic Molding & Extrusions
• Pizza Ovens
• ATM Machines
• Egg Incubators
All Series SA solid state relays feature
opto-isolated inputs where an internal
LED signals a photosensitive element
when output switching is to occur.
This provides up to 4,000V isolation
between the input voltage and the
output voltage and also limits current
leakage. This feature is important in
certain medical, residential and industrial applications. DC relays are also
protected if the polarity is accidentally
reversed during installation.
E2
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SSNA2012
Many safety and
convenience features
Integral heatsink with
DIN-rail mounting
All Sprecher + Schuh solid state relays
come standard with an LED to indicate when the relay is in an operational
state. This increases safety and speeds
troubleshooting.
A complete selection of relays is available with a built-in heatsink (SAR
models). This eliminates the hassle
of selecting and installing a properly
sized heatsink, or mounting the relay
directly on the back pan with silicone
grease.
In addition, all hockey puck type relays come standard with a transparent
cover that provides touch protection.
Rail mounted relays also offer touch
protection through the use of recessed
terminals
“Intelligent” relays include
special fusing
Approvals
Series SA Solid State Relays are UL
Recognized and CSA Approved.
Larger SAR relays (50, 75 & 100A)
come standard with a feature that
shuts down the unit when it senses an
over temperature condition. A built-in
replaceable semiconductor fuse further
protects these larger relays from catastrophic failures due to short circuits.
Quick Selection Guide
Surface Mount (hockey puck) Relays
S
Mounting
S Surface Mount (hockey puck)
3
Output Voltage
3 330V maximum
S Surface Mount (hockey puck)
3 330V maximum
S Surface Mount (hockey puck)
6 660V maximum
S Surface Mount (hockey puck)
6 660V maximum
-
50
Amp Range
10
20
50
75
10
20
50
75
50
75
50
75
-
1
Poles
1
D
Control Voltage
D 4-32V DC
See
Page...
1
~ 100-280V AC ➊
E4
1
D 4-32V DC
E5
1
~ 100-280V AC ➊
E5
1
Poles
1
D
Control Voltage
D 4-32V DC
See
Page...
E4
E
Solid State
Relays
SA
Type
R
Mounting
R Rail mount (with integral heatsink)
6
Output Voltage
6 660V maximum
R Rail mount (with integral heatsink)
6 660V maximum
R Rail mount (with integral heatsink)
R Rail mount (with integral heatsink)
6 660V maximum
6 660V maximum
-
25
Amp Range
25
40
50
75
100
50
75
100
25
25
-
1
D
4-28V DC
1
~
100-280V AC ➊
3
3
D
~
4-28V DC
100-280V AC ➊
E6
E6
E8
E8
E9
E8
E8
E9
E10
E10
SAS/R
DIN-rail Mount Relays (with integral heatsink)
SA
Type
➊ Omit “D” from
catalog number
if selecting AC
control.
Example:
SAS(R)3-251D becomes
SAS(R)3-25-1
E3
SSNA2012
visit www.sprecherschuh.com/ecatalog for the most up to date information
Solid State Relays
Series SAS Panel Mount Relays
1 Pole Panel Mount Relay, 4-32V DC Control, 330VAC Max. Output ➊ ➋
Safety Cover
(included)
Specifications
10 Amp
Catalog Number
SAS3-10-1D
Input
Voltage Range
Current Draw
Turn-on Voltage (min.)
Turn-off Voltage (max.)
Output
Amp Rating (continuous with proper heatsink)
Voltage Range
Frequency Range
Dimension (mm)
25 Amp
Price
45
Catalog Number
SAS3-25-1D
4 - 32V DC
5.4-10mA
4V DC
1V DC
50 Amp
Price
50
Catalog Number
SAS3-50-1D
4 - 32V DC
5.4-10mA
4V DC
1V DC
75 Amp
Price
79
4 - 32V DC
3.5-8mA
4V DC
1V DC
10
25
24 - 330V AC
24 - 330V AC
47 - 63 Hz
47 - 63 Hz
57(H) x 44.5(W) x 35(D) With safety cover
Catalog Number
Price
SAS3-75-1D
104
4 - 28V DC
3.5-8mA
4V DC
1V DC
50
75
24 - 330V AC
24 - 330V AC
47 - 63 Hz
47 - 63 Hz
57(H) x 44.5(W) x 23(D) Without safety cover
1 Pole Panel Mount Relay, 100-280V AC Control, 330VAC Max. Output ➊ ➋
Safety Cover
(included)
SAS
Solid State
Relays
E
Specifications
10 Amp
Catalog Number
SAS3-10-1
Input
Voltage Range
Turn-Off Current/Impedance
Turn-on Voltage (min.)
Turn-off Voltage (max.)
Output
Amp Rating (continuous with proper heatsink)
Voltage Range
Frequency Range
Dimension (mm)
100 - 280V AC
2mA/10k
100V AC
20V AC
Price
53
Catalog Number
SAS3-25-1
100 - 280V AC
2mA/10k
100V AC
20V AC
10
25
24 - 330V AC
24 - 330V AC
47 - 63 Hz
47 - 63 Hz
57(H) x 44.5(W) x 23(D) Without safety cover
➊ See important application considerations on next page.
E4
25 Amp
50 Amp
Price
55
Catalog Number
SAS3-50-1
75 Amp
Price
88
Catalog Number
Price
SAS3-75-1
112
100 - 280V AC
2mA/10k
100V AC
20V AC
100 - 280V AC
2mA/10k
100V AC
20V AC
50
75
24 - 330V AC
24 - 330V AC
47 - 63 Hz
47 - 63 Hz
57(H) x 44.5(W) x 35(D) With safety cover
➋ Safety cover and terminal screws/saddle clamps supplied with SAS unit.
Discount Schedule F
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SSNA2012
Solid State Relays
Series SAS Panel Mount Relays
1 Pole Panel Mount Relay, 4-32V DC Control, 660VAC Max. Output ➊
Safety Cover
(included)
Specifications
50 Amp
75 Amp
Catalog Number
Price
SAS6-50-1D
Input
Voltage Range
Current Draw
Turn-on Voltage (min.)
Turn-off Voltage (max.)
Output
Amp Rating (continuous with proper heatsink)
Voltage Range
Frequency Range
Dimension (mm)
96
Catalog Number
Price
SAS6-75-1D
134
4 - 32V DC
3.5...8mA
4V DC
1V DC
Important Note:
SAS Family
Adequate heat sinking, including consideration of air temperature and flow,
is essential to the proper operation of
a solid state relay. Units should not be
mounted in an enclosed area without
proper air flow. Units should also never
be mounted to a plastic base or to a
painted surface. Failure to provide adequate heat sinking with thermal gel or
pad will cause a solid state relay to fail.
Engineering Note: All units must be
correctly installed on an appropriate
heat sink, with a thermal transfer gel
or pad, in order to dissipate the heat
generated. See pages E12, E14 and
E15 for more details.
4 - 32V DC
3.5...8mA
4V DC
1V DC
50
75
24 - 660V AC
24 - 660V AC
47 - 63 Hz
47 - 63 Hz
57(H) x 44.5(W) x 23(D) no cover; 57(H) X 44.5(W) x 35(D) with cover
1 Pole Panel Mount Relay, 100-280V AC Control, 660VAC Max. Output]
Safety Cover
(included)
E
75 Amp
Price
Catalog Number
Price
SAS6-50-1
104
SAS6-75-1
145
100 - 280V AC
2mA/10k
100V AC
20V AC
Solid State
Relays
Input
Voltage Range
Turn-off Current/Impedance
Turn-on Voltage (min.)
Turn-off Voltage (max.)
Output
Amp Rating (continuous with proper heatsink)
Voltage Range
Frequency Range
Dimension (mm)
50 Amp
Catalog Number
100 - 280V AC
2mA/10k
100V AC
20V AC
SAS
Specifications
50
75
24 -660V AC
24 - 660V AC
47 - 63 Hz
47 - 63 Hz
57(H) x 44.5(W) x 23(D) no cover; 57(H) X 44.5(W) x 35(D) with cover
➊ Safety cover and terminal screws/saddle clamps supplied with SAS unit.
Discount Schedule F
SSNA2012
visit www.sprecherschuh.com/ecatalog for the most up to date information
E5
Solid State Relays
Series SAR
RMS On-State Current Amps
1 Pole DIN-Rail Mount Relay, 4-32V DC Control, 660VAC Max. Output
40
30
25A
20
10
20
30
40
50
60
70
Relay base temperature (ºC)
80
RMS On-State Current Amps
Ambient temperature (°C), measured 1” (25mm) below relay when mounted on a
vertical surface
40
40A
30
20
10
20
30
40
50
60
70
80
Relay base temperature (ºC)
25 Amp
Ambient temperature (°C), measured 1” (25mm) below relay when mounted on a
vertical surface
Specifications
40 Amp
Catalog Number
Price
Catalog Number
Price
SAR6-25-1D
111
SAR6-40-1D
134
Input
Voltage Range
Current Draw
Turn-on Voltage (min.)
Turn-off Voltage (max.)
Output
Amp Rating (continuous with proper air flow)
Voltage Range
Frequency Range
Dimension (mm)
4 - 32V DC
3.5...8mA
4V DC
1V DC
4 - 32V DC
3.5...8mA
4V DC
1V DC
25
24 - 660V AC
47 - 63 Hz
87(H) x 30(W) x 100(D)
40
24 - 660V AC
47 - 63 Hz
87(H) x 60(W) x 100(D)
RMS On-State Current Amps
1 Pole DIN-Rail Mount Relay, 100-280V AC Control, 660VAC Max. Output
40
30
25A
20
10
20
30
40
50
60
70
Relay base temperature (ºC)
80
SAR
Solid State
Relays
E
RMS On-State Current Amps
Ambient temperature (°C), measured 1” (25mm) below relay when mounted on a
vertical surface
40
40A
30
20
10
20
30
40
50
60
70
80
Relay base temperature (ºC)
25 Amp
Ambient temperature (°C), measured 1” (25mm) below relay when mounted on a
vertical surface
Specifications
Input
Voltage Range
Current Draw
Turn-off Current/Impedance
Turn-on Voltage (min.)
Turn-off Voltage (max.)
Output
Amp Rating (continuous with proper air flow)
Voltage Range
Frequency Range
Dimension (mm)
E6
40 Amp
Catalog Number
Price
Catalog Number
Price
SAR6-25-1
117
SAR6-40-1
147
100 - 280V AC
9...25mA
2ma/10kΩ
90V AC
20V AC
100 - 280V AC
9...25mA
2ma/10kΩ
90V AC
20V AC
25
24 - 660V AC
47 - 63 Hz
87(H) x 30(W) x 100(D)
40
24 - 660V AC
47 - 63 Hz
87(H) x 60(W) x 100(D)
Discount Schedule F
visit www.sprecherschuh.com/ecatalog for the most up to date information
SSNA2012
Solid State Relays
Series SAR DIN-rail Mounted Relays
1 Pole DIN-Rail Mount Relay, 4-28V DC Control, 660VAC Max. Output
50 Amp
Specifications
75 Amp
Catalog Number
Price
Catalog Number
Price
SAR6-50-1D
242
SAR6-75-1D
358
Input
Voltage Range
Current Draw
Turn-on Voltage (min.)
Turn-off Voltage (max.)
Output
Amp Rating (continuous with proper air flow)
Voltage Range
Frequency Range
Dimension (mm)
4 - 28V DC
6...9mA
4V DC
1V DC
4 - 28V DC
6...9mA
4V DC
1V DC
50
48 - 660V AC
47 - 63 Hz
126(H) x 60(W) x 128(D)
75
48 - 660V AC
47 - 63 Hz
126(H) x 90(W) x 128(D)
1 Pole DIN-Rail Mount Relay, 100-280V AC Control, 660VAC Max. Output
50 Amp
Price
Catalog Number
Price
SAR6-50-1
250
SAR6-75-1
366
100 - 280V AC
5...15mA
2mA/10kΩ
100V AC
20V AC
100 - 280V AC
5...15mA
2mA/10kΩ
100V AC
20V AC
50
48 - 660V AC
47 - 63 Hz
126(H) x 60(W) x 128(D)
75
48 - 660V AC
47 - 63 Hz
126(H) x 90(W) x 128(D)
Discount Schedule F
SSNA2012
visit www.sprecherschuh.com/ecatalog for the most up to date information
SAR
Specifications
Input
Voltage Range
Current Draw
Turn-off Current/Impedance
Turn-on Voltage (min.)
Turn-off Voltage (max.)
Output
Amp Rating (continuous with proper air flow)
Voltage Range
Frequency Range
Dimension (mm)
75 Amp
Catalog Number
Solid State
Relays
E
E7
Solid State Relays
Series SAR DIN-rail Mounted Relays
1 Pole DIN-Rail Mount Relay, 4-28V DC Control, 660VAC Max. Output
100 Amp
Specifications
Catalog Number
Price
SAR6-100-1D
633
Input
Voltage Range
Current Draw
Turn-on Voltage (min.)
Turn-off Voltage (max.)
Output
Amp Rating (continuous with proper heatsink)
Voltage Range
Frequency Range
Dimension (mm)
4 - 28V DC
6...9mA
4V DC
1V DC
100
48 - 660V AC
47 - 63 Hz
126(H) x 120(W) x 128(D)
1 Pole DIN-Rail Mount Relay, 100-280V AC Control, 660VAC Max. Output
SAR
Solid State
Relays
E
100 Amp
Specifications
Input
Voltage Range
Current Draw
Turn-off Current/Impedance
Turn-on Voltage (min.)
Turn-off Voltage (max.)
Output
Amp Rating (continuous with proper heatsink)
Voltage Range
Frequency Range
Dimension (mm)
E8
Catalog Number
Price
SAR6-100-1
646
100 - 280V AC
5...15mA
2mA/10kΩ
100V AC
20V AC
100
48 - 660V AC
47 - 63 Hz
126(H) x 120(W) x 128(D)
Discount Schedule F
visit www.sprecherschuh.com/ecatalog for the most up to date information
SSNA2012
Solid State Relays
Series SAR DIN-rail Mounted Relays
3 Pole DIN-Rail Mount Relay, 4-28V DC Control, 660VAC Max. Output
Ambient temperature (°C), measured 1 inch
(25mm) below relay when mounted to DIN rail
or a vertical, 1/8th inch thick aluminum panel
surface. Airflow is unrestricted up and
through the heat sink.
Specifications
25 Amp
Catalog Number
Price
SAR6-30-3D
285
Input
Voltage Range
Current Draw
Turn-on Voltage (min.)
Turn-off Voltage (max..)
Output
Amp Rating (continuous with proper air flow)
Voltage Range
Frequency Range
Dimension (mm)
4 - 32V DC
10...15mA
4V DC
1V DC
25 A (3 Pole) 30 A (2 Pole)
48 - 660V AC
47 - 63 Hz
87(H) x 90(W) x 100(D)
3 Pole DIN-Rail Mount Relay, 100-280V AC Control, 660VAC Max. Output
E
Ambient temperature (°C), measured 1 inch
(25mm) below relay when mounted to DIN rail
Catalog Number
Price
SAR6-30-3
300
100 - 280V AC
9...30mA
2mA/10kΩ
100 0V AC
20V AC
25 A (3 Pole) 30 A (2 Pole)
48 - 660V AC
47 - 63 Hz
87(H) x 90(W) x 100(D)
Discount Schedule F
SSNA2012
Solid State
Relays
Specifications
Input
Voltage Range
Current Draw
Turn-off Current/Impedance
Turn-on Voltage (min.)
Turn-off Voltage (max..)
Output
Amp Rating (continuous with proper air flow)
Voltage Range
Frequency Range
Dimension (mm)
25 Amp
SAR
or a vertical, 1/8th inch thick aluminum panel
surface. Airflow is unrestricted up and
through the heat sink.
visit www.sprecherschuh.com/ecatalog for the most up to date information
E9
Solid State Relays
Series SAS(R)
Replacement Parts
Part
Description
Catalog Number
Price
Replacement Semiconductor Fuses- One fuse
supplied standard with each fused relay.
Fuse Size
63A
Fits Relay...
SAR6-50-1
SAR6-50-1D
100A
SAR6-75-1
SAR6-75-1D
SAR6-100-1
SAR6-100-1D
Replacement Cover - One cover supplied standard
with each SAS panel mount relay.
SA-SFU-63
84
SA-SFU-100
94
SA-SC1
5
Accessories
Accessory
Description
DIN-rail - 2 meter lengths (6’6”)
Top Hat, low profile (price per rail)
Top Hat, high profile (package of 20, price per rail)
Catalog Number
Price
3F
3AF
See
page
A58
SAS/R
Solid State
Relays
E
E10
Discount Schedule F
visit www.sprecherschuh.com/ecatalog for the most up to date information
SSNA2012
Solid State Relays
Series SAS Solid State Relays
Accessories
Accessory
Description
Heatsink –
Panel or DIN-rail mount for mounting
one SAS relay.
For most 35-60A applications
1.0 C/W capability
Heatsink –
Panel or DIN-rail mount for mounting
one SAS relay.
For most 10-40A applications
1.6 C/W capability
Heatsink –
Panel or DIN-rail mount for mounting
up to six SAS relays.
For most 8-60A applications
1.2 C/W capability
Catalog Number
SAS-HTSK-1.0
SAS-HTSK-1.6
SAS-HTSK-1.2
Price
50
33
135
Thermal Transfer Pads
Our thermal transfer pads are die-cut to fit the bases of Sprecher + Schuh panel
mount relays. They are an excellent replacement for thermal greases, and are proven
to provide the lowest thermal resistance values of any commercially practical interface
material, while being more convenient and less messy. Available in sets of 5.
How to calculate the proper size heat sink?
As ambient temperature increases, the use of
a properly sized heat sink becomes necessary.
Hint: the smaller the “heat sink rating” number,
the better the heat sink is at dissipating the
heat. The new DIN heat sinks are the outstanding choice for most applications because:
1) They use the least amount of sub-plate
mounting space,
2) They extend the heat sink forward for the
best air flow, and
3) Universal mounting-bracket -they can be DIN
rail-mounted for fast installations without
the need for drilling and tapping pre-aligned
hole patterns, or they can be attached with a
standard bolt.
Use a thermal conduction grease or a thermal
pad in order to achieve the proper heat sinking
capability between the SSR and the heat sinks
show below:
SAS-HTSK Features/Benefits:
l
DIN rail mountable
l
Space saving design
l
Ground screw built-in
l
Drilled and tapped to fit panel mount relays
• 60°C Phase Change Temperature
• Total Interface Pad Thickness = 3 mils
• Lowest Contact Thermal Impedance Available
• No “run out” in vertical mounting applications
• Heat sensitive material, store below 30°C (85°F)
• Ruggedized material that is resistant to handling
damage while in transit
PKG
Price
SAS-THERMPAD5
20
SAS
Catalog Number
Solid State
Relays
E
Sold in packages of 5 pieces
Discount Schedule F
SSNA2012
visit www.sprecherschuh.com/ecatalog for the most up to date information
E11
Application Notes
Series SA Solid State Relays
General Application Notes
Heat Sinking
Heat is generated by all Solid State Relays in direct relation to the
amount of current being switched. Approximately 0.8-1.4 Watts
will be generated by the SSR for every Amp switched. This heat
must be dissipated as fast as generated otherwise the temperature
will increase until the relay fails. Approximately 90% of all problems with relays are directly related to heat.
Adequate heat sinking, including consideration of air temperature and flow, is essential to the proper operation of a solid
state relay. Units should never be mounted in an enclosed area
without proper air flow. Units should also never be mounted to
a plastic base or to a painted surface. Failure to provide adequate
heat sinking will cause a solid state relay to fail. We recommend
mounting our units on the heat sinks listed on page E12 of this
catalog. However, when this is not possible, and the units are to
be mounted to some other heat sinking object, material heat conductivity should be kept in mind. In heat dissipation, our heat
sinks are approximately equivalent to a sheet of aluminum 1/8”
thick by the dimensions shown:
SAS-HTSK-1.6
SAS-HTSK-1.0
10” x 10”
14” x 14”
(254 x 254mm)
(355.6 x 55.6mm)
(Given proper ventilation and ambient temperature.)
In comparison, twice the amount of steel and four times the
amount of stainless steel would be needed to achieve the same
effect.
Any panel mount Solid State Relay must be mounted to a clean,
bare (non-painted) surface that is free of oxidation.
Solid State
Relays
Air is a very poor conductor of heat and will cause the relay to
run hotter than it should. To fill these pockets, Thermal Transfer
Pads (see pg E12) should be placed on the metal base of the relay
before mounting to a metal surface. We suggest torque of 10
inch-pounds on both of the SSR mounting screws.
SAS/R
E
Since even the best heat sink surfaces have some imperfections,
there will be many air pockets between the base of the relay and
the heat sink (or panel) surface.
Alternately, an evenly applied 0.002” thick layer of Dow Corning 340 (or equivalent) can be used. Note that a thicker layer of
thermal compound actually decreases heat transmission.
Since airflow will affect its performance, a heat sink should be
mounted in a manner that assures unrestricted airflow over its
surface. Recommended mounting is on a vertical metal surface,
with the fins oriented vertically so that air can flow unimpeded
along the surfaces of the heat sink. Horizontal or inverted mount-
E12
ing is possible but not recommended, and the SSR must be
derated accordingly.
Care must be taken when mounting multiple SSRs in a confined area. SSRs should be mounted on individual heat sinks
whenever possible. Panel mount SSRs should never be operated
without proper heat sinking or in free air as they will
THERMALLY SELF DESTRUCT UNDER LOAD.
A simple method for monitoring temperature is to slip a thermocouple under a mounting screw. If the base temperature does
not exceed the “max heat sink temperature” (shown on pg E14)
under normal operating conditions, the SSR is operating in an
optimal thermal environment. If this temperature is exceeded,
the relays current handling ability must either be thermally improved by the use of a larger heat sink, or greater air flow must
be provided over the device through the use of a fan. Some cases
may require the selection of a higher current output SSR and
thermally derating the device accordingly.
Remember that the heat sink removes the heat from the Solid
State Relay and transfers that heat to the air in the electrical
enclosure. In turn, this air must circulate and transfer its heat to
the outside ambient. Providing vents and/or forced ventilation
is a good way to accomplish this.
80% Power Rule
All Solid State Relays are capable of running at full rated power
(with proper heat sinking). However, it is strongly suggested
that they be used at no more than 80% power to provide a
safety margin in case of higher than expected voltage, temperature, or dust on the heat sink, etc. Additionally, voltage can
vary up to +/-10%, and a heating element up to +/-10% over its
life—two main reasons for the 80% rule.
Din Mounted Single and Three Phase Relays
The SAR series are provided with integral heat sinks.  The
SAR50-100A units should be mounted so as to provide 1”
(25mm) of space between the units, for best air flow (the
80% of power rule described above still applies). They can be
mounted against each other if the end units in a row are derated
by 10% and the middle units are derated 10% more than the
end ones.
On the other hand, the SAR-25/40A units can be installed on
a DIN-rail with only 0.18 inches between relays, “Fin-to-Fin”!
The SAR-25/40A family provides more amps per square inch
than other brands of industrially hardened SCR controllers and
Discount Schedule F
visit www.sprecherschuh.com/ecatalog for the most up to date information
SSNA2012
Application Notes
Series SA Solid State Relays
General Application Notes (continued)
Heat Sink Calculations for SAS Family of
Solid State Relays
Sprecher + Schuh SAS Power Dissipation
SAS3-10
10 Amp Relays
10A/11W
8A/9W
6A/6W
4A/4W
2A/2W
Max heat sink=90ºC
Pwr Ref: VO=0.80VO
Rt=0.038 Ω
SAS3-25
25 Amp Relays
25A/31W
20A/23W
15A/16W
10A/10W
5A/5W
Max heat sink=85ºC
Pwr Ref: VO=0.80VO
Rt=0.021 Ω
SASx-50
50 Amp Relays
50A/59W
40A/44W
30A/30W
20A/18W
10A/9W
Max heat sink=105ºC
Pwr Ref: VO=0.80VO
Rt=0.0092 Ω
SASx-75
75 Amp Relays
75A/84W
60A/63W
45A/44W
30A/27W
15A/13W
Max heat sink=105ºC
Pwr Ref: VO=0.85VO
Rt=0.0046 Ω
All calculations are in ºC. See derating curves on next page.
Sprecher + Schuh provides three ways to calculate the heat sink for
your application.
1) Heat Sink Calculation Method
Maximum heat sink temperature minus maximum ambient temperature divided by the power dissipation (use the chart above for
power dissipation at desired current).
A 25A unit can have an 85ºC heat sink
(85-45 ambient) = 40ºC temp rise is allowed
40ºC/23W = 1.74ºC/W heat sink rating or less
(less temperature rise per watt is better)
Therefore, the recommended heat sink would be part
number: SAS-HTSK-1.6 (rated at 1.6ºC/W) or any
equivalent heat sink that is 1.74 or LESS. Remember,
the lower the heat sink value, the better it dissipates
the heat. The relay must be connected to the heat
sink using an appropriate thermal conduction grease
or thermal pad.
2) De-Rating Calculation Method
Maximum heat sink temperature minus maximum ambient
temperature divided by the heat sink rating (use the previous
chart for power dissipation).
(Max Heat Sink Temp - Max Ambient Temp) /
Heat sink rating = ___(Max allowed Watts)
For Example, use an
• SAS3-10-1D is a 60ºC ambient with a
2.0ºC/W heat sink.
• 90ºC - 60ºC = 30ºC heat sink
Temperature rise is allowed.
• 30ºC divided by 2.0ºC/W =15W.
• From the table, full load current of
10A only dissipates 11W.
• Thus, an SAS3-10-1D mounted on a
2.0ºC/W heat sink can switch 10A at 60ºC.
3) Power Calculation in Place of the Charts
Heat rise calculation of an SAS solid state relay based upon
amperage switched “ON” 100% of the time. Please note, the
Sprecher + Schuh “SAS” SSR uses engineering techniques that
provide maximum surge survivability while generating a low
temperature rise.
(0.9 x Irms x VO) + (I2rms≈ x Rt) = Power
For Example, use an
• SAS3-25-1D for a 21A application.
• (0.9 x 21A x 0.80V) + (212 x 0.021Ω) = 24.4 W
(Max Heat Sink Temp - Max Ambient Temp) / Watts = ___
For Example, use an
• SAS3-25-1D running at 20 Amps in a 45ºC ambient
• From the chart, at 20 Amps it dissipates 23 Watts
Discount Schedule F
SSNA2012
visit www.sprecherschuh.com/ecatalog for the most up to date information
E13
E
Solid State
Relays
For proper airflow, the SAR units should both be mounted in a
manner leaving space above and below the heat sink equal to or
greater than the height of the heatsink. Since airflow will affect
performance, relays with integral heat sinks should be mounted
in a manner providing unrestricted airflow over their surfaces.
Recommended mounting is on a vertical surface, with the fins oriented vertically, so that air can flow unimpeded along the surfaces
of the heat sink.
•
•
•
•
SAS/R
will perform better in installations with higher ambient temperatures.
Application Notes
Series SA Solid State Relays
General Application Notes (continued)
75 Amp Relay
Watts of Heat Generated
SAS Family Solid State Relay Power Curves
Watts of Heat Generated
10 Amp Relay
RMS on-state current (amps)
RMS on-state current (amps)
The Sprecher + Schuh 3 phase solid state relay is designed for
switching power to 3 phased asynchronous motors and to resistive
loads. For guidance in its application, refer to the following notes:
Watts of Heat Generated
25 Amp Relay
(380 Volt, 50/60Hz Motors - Direct Start)
2-Pole - 3000 RPM
4-Pole - 1500 RPM
6-Pole - 1000 RPM
8-Pole - 750 RPM
RMS on-state current (amps)
50 Amp Relay
Motor
Size
(KW)
3
3
4
3
Start
Current
(Arms)
43.4
38.0
47.7
36.6
Operating
Current
(Arms)
6.2
6.9
9.0
8.7
(220 Volt, 50/60Hz Motors - Direct Start)
2-Pole - 3000 RPM
2.2
45.0
7.0
Watts of Heat Generated
Overload Capacities
In the event that a load completely or partially short circuits, the
following table indicates the absolute maximum current that the
3 Phase SAR-Unit relay can withstand for various time limits:
SAS/R
Solid State
Relays
E
Motor Applications (SAR - 3 Phase Unit)
RMS on-state current (amps)
E14
Time
(Sec)
.2
.4
.6
.8
1.0
2.0
4.0
6.0
Current
(Arms)
275
228
188
161
150
124
95
86
Time
(Sec)
8.0
10.0
12.0
14.0
16.0
18.0
20.0
40.0
Current
(Arms)
80
75
72
71
70
69
67
58
Discount Schedule F
visit www.sprecherschuh.com/ecatalog for the most up to date information
SSNA2012
Application Notes
Series SA Solid State Relays
General Application Notes (continued)
Three Phase Motor Control (SAS Series)
Three phase motors can be controlled as shown. Note that only
two SSRs are required (the third is optional). The inputs are
shown in parallel, but they can also be connected in series as long
as the minimum control voltage is provided to power each relay.
Logic Signal (TTL) Operation
Relay positioning in a three-phase circuit impacts the current
draw and therefore the amount of heat generated. When positioned in location “A”, as indicated below, a relay will draw
73.2% more current than position “B”. Using position “B” will
enable the use of a smaller relay or will provide an increased safety
margin. Additionally, by drawing less current, heat generation is
reduced by 40%.
Many TTL gates, for example, will safely dissipate 40mW or
more; and the total package will dissipate up to one Watt. (This
gate power must not be confused with relay input power.)
Whereas an SSR in which the input requires 6mA at 5Vdc consumes 30mW of power, the TTL gate sinking this same 6mA may
have a voltage drop of only 0.2 volt, and power consumption of
just 1.2 mW!
TTL gates can only sink relay input current, not source it. This is
because the sourcing transistor has a pull-up resistance in its collector circuit. Pulling 11mA through this resistance, in this case
130 ohms, would leave insufficient input voltage to operate the
relay. For example, an SSR requiring a nominal 5Vdc may not
operate on less than 4 volts.
Since TTL gates can only sink current to the relay, and since current sinking is done from a “zero” logic signal, the relay can only
be turned on from a “zero” signal. This is contrary to normal
relay operation, which prefers that the relay be turned on as a
result of a “one” signal. To obtain relay actuation from a logical
“one” signal, it is necessary to use an inverting gate. With such a
gate, when a “one” signal is received, the sink transistor will turn
on and conduct relay input current.
Discount Schedule F
SSNA2012
visit www.sprecherschuh.com/ecatalog for the most up to date information
E
Solid State
Relays
Example Wiring (SAR-3 Phase Unit)
Typically, the drop across the transistor and
diode at 11mA would approximate 0.8 volt;
and the drop across 130 ohms is 1.4 volt. This
2.2 volt drop would leave only about 1.8 volts
for the relay to operate, not enough for relay
turn-on.
E15
SAS/R
Three Phase Wiring Suggestions
One of the primary advantages of SSRs and I/O modules is their
compatibility with low level, solid state logic. Any logic gate,
buffered or not, capable of delivering the required current and
voltage within its maximum power dissipation rating can be used
to control an SSR or I/O module.
Application Notes
Series SA Solid State Relays
General Application Notes (continued)
Changing Pickup and Dropout Voltage
Installation Density
By using a zener diode in series with the input, the pick up and drop
out voltage of a Solid State Relay or an I/O Module can be increased
by the value of the zener. For example, a typical SSR has a maximum
pick up voltage of 4 Vdc and a minimum drop out of 1 Vdc. By adding a 6 volt zener as shown, the new pick up will be 10 volts and the
new drop out 7 volts.
To achieve maximum installation density and to provide
separate wiring channels for the high voltage/high current
wires vs the control signal wires, Sprecher + Schuh’s SAR
family of 25 or 40 amp products can be installed as shown
below. Please ensure that you observe the wire terminal
numbers. The spacing shown is the minimum requirement
for most industrial applications. Unrestricted airflow is
needed for the Sprecher + Schuh product to perform at its
rated capacity.
Latching SSR
An AC SSR can be made to self latch (at the sacrifice of input-output
isolation), thus permitting the use of momentary action switches for
on/off or stop/start operation. It may be necessary to insert an RC
filter across the relay input to prevent the relay from turning on due
to switching transients upon application of system power. Note that
the SSR employed here must be an AC input type.
2.2k Ω, 5W
1k Ω, 5W
Crimped-on Wire Terminals
When using either Ring or Spade crimped terminals with
the SAS relays, do not use the saddle clamps that are provided. It is sufficient to secure the Ring or Spade Connectors with the enclosed screws.
E
Solid State
Relays
When using electrical wire that is larger than #10 AWG
with the SAR relays, 25-40 amp models, use a crimped lug,
such as Amp# 790368-1 or equivalent.
DIN Rail Sizes
SAS/R
All DIN Rail mountable relays and modules will fit on any
standard 35mm rail.
E16
Discount Schedule F
visit www.sprecherschuh.com/ecatalog for the most up to date information
SSNA2012
Application Notes
Series SA Solid State Relays
General Application Notes (continued)
Heater Loads
Short Circuit Protection
Solid State Relays are well suited for driving heaters, however,
in some temperature control applications the load is rapidly
and almost continuously switched on and off. This is ideal
for purely resistive loads (0.9-1.0 power factor). For loads of
power factor 0.8-0.9 Sprecher + Schuh recommends increasing the controller cycle time to 5 sec. minimum. Loads with
a power factor <0.8 should be derated for inductive load.
The relay can be short circuit protected with an appropriate
semiconductor fuse. The load integral of the relay (I2t) determines which size of fuse is to be used. The fuse load integral
must be below that of the relay for the appropriate protection.
Be certain to analyze the fuse current/time curve to insure that
the fuse can withstand the motor starting current (if applicable).
Recommended Heater Loads:
SSR
Rating
10A
25A
50A
75A
at
120Vac
960W
2.4KW
4.8KW
7.2KW
at
240Vac
1.9KW
4.8KW
9.6KW
14.4 KW
at
480 Vac
3.8KW
9.6KW
19.2KW
28.8KW
NOTE: Overload protection should be provided by another slow-acting
fuse in series with the short circuit protection fuse. (An overload being an
overcurrent condition that is not of high enough amplitude to be considered
a short circuit).
Transient Voltage Protection
Low cold resistance elements such as Tungsten or Short
Wave Infrared have special design considerations due to high
inrush currents. Please consult the factory.
When operating a relay in an electrically noisy environment,
large voltage transients may damage the relay. To protect against
this occurrence, it is advisable to install appropriate varistors
across the respective supply and load terminals of the relay
output.
Solenoid Valves and Contactors
Power Rating
80%
65%
40%
Recommended Solenoid Loads = V x I x (Power Rating)
Recommended Solenoid at 5 sec. cycle time.
SSR
Rating
10A
25A
50A
75A
at
120Vac
780W
2.0KW
3.8KW
5.8KW
at
240Vac
1.9KW
3.9KW
7.6KW
14KW
If your application is located near inductive loads, or shares
power sources with large inductive loads that are creating transients in excess of the blocking voltage of the Sprecher + Schuh
solid state relay, then you must install a metal oxide varistor
(MOV) to protect the solid state relay. It is up to the installation
company to properly size the MOV to the application! Ideally,
the MOV protection is near the noise generating inductive load
(such as a motor, drive, or other large inductive coil) or you can
place MOVs directly across the output terminals of the SSR.
Some “typical” MOVs include:
600 volt application - Harris V660 LA80B
480 volt application - Harris V575 LA80B
300 volt application - Harris V320 LA40B
The new SAS and SAR families of solid state relays include technology that dramatically reduces your need to install an external
MOV except in extremely noisy environments or inductive load
applications.
Discount Schedule F
SSNA2012
visit www.sprecherschuh.com/ecatalog for the most up to date information
E17
E
Solid State
Relays
Cycle Time
20 sec.
5 sec.
1 sec.
Model SAR6-30-3 shown with customer-installed MOVs.
SAS/R
All of Sprecher + Schuh power SSRs use high noise immunity circuitry in addition to a snubber network to handle the
electrical noise generated by inductive loads.
However, the cycling of a solenoid load will generate large
current spikes which will decrease the power capability of
the SSR. The power rating of the SSR will be reduced by the
power rating percentage shown.
Application Notes
Series SA Solid State Relays
General Application Notes (continued)
Single Phase Motor Control
Typical Temperature Control Installation
The following table gives guidelines for selecting relays for single
phase non-reversing motors. Driving reversing motors is not recommended due to the potentially destructive voltage doubling and
capacitive discharge that they create.
Electrically heated chamber application:
• DC activated SAR6 solid state relay
• Thermocouple input
• Alarm for operator warning
Recommended Loads:
SSR
Rating
10A
25A
50A
75A
at
120Vac
1/4 Hp
1/3 Hp
3/4 Hp
1-1/4Hp
at
240Vac
1/2 Hp
1 Hp
2 Hp
3 Hp
at
480Vac
2 Hp
3 Hp
7-1/2 Hp
Lamp Test
An AC output solid state relay can be quickly and easily tested.
To evaluate whether or not it is operative, connect the relay as
follows using the appropriate voltages. The lamp bulb should not
turn “On” until the control voltage is applied (and “Off” when
control voltage is removed). If the lamp comes “On” with no control voltage, the output is shorted.
Shown is an AC output solid state relay. DC units can be checked
the same way with appropriate DC voltages and load.
Packaging or food processing application:
• SAS DC activated solid state relay
• Analog sensor input
• Alarm circuit to stop PLC or related equipment
Safety
Due to their leakage current Solid State Relays are NOT open
circuits, even when in the off-state. Safety can only be achieved
by a mechanical disconnect between the solid state relay and the
power lines.
SAS/R
Solid State
Relays
E
Typical Temperature Control Application
E18
Locking Screws - SAR Units
Screws are prevented from self-loosening by a special design.
The automatic progressive locking principle generates an
increasing thread friction as the screw is tightened. Repeated
tightening and loosening does not cause fatigue of the locking
components. Recommended torque is 7-9 in/lbs. Care should
be taken not to overtighten screws.
Discount Schedule F
visit www.sprecherschuh.com/ecatalog for the most up to date information
SSNA2012
Application Notes
Series SA Solid State Relays
General Application Notes (continued)
Fusing Considerations
Output Leakage
Circuit Breakers and slow blow fuses offer no protection to Solid
state relays. Fast, “I2T Semiconductor Fuses” are the only reliable
way to protect SSRs.
Solid state relays typically have 8mA leakage current, even in their
off-state. The only safe way to prevent shock is to have a mechanical disconnect between the line and the relay.
All solid state relays have an I2T rating. This rating is the bench
mark for their ability to handle a shorted output condition.
Sprecher + Schuh advocates circuit protection through the use of
a properly selected I2T (semiconductor fuse).
Direct Copper Bonding
Devices such as electromechanical circuit breakers and slow blow
fuses cannot react quickly enough to protect the SSR in a shorted
condition and are not recommended!!
For fuses, I2T is the measure of let-through energy in terms of
current versus time. For solid state relays, I2T is based directly on
the output thyristor’s single-cycle peak surge current determined
by:
I2T= I2pk(surge) x 0.0083 (sec)
2
The procedure is to select a fuse with an I2T let-through rating
that is less than the I2T capability of the solid state relay for the
same duration.
An I2T fuse protects the solid state relay. You still need a
regular fuse or circuit breaker to protect the complete installation,
in accordance with your local electrical code.
Sprecher + Schuh employs the proven reliability of direct copper
bonding technology to all of its SCR chip assemblies. This direct
bonding provides a more reliable mechanical connection between
the SCR and the heat sink, by reducing the physical stress on the
chips and also provides for better heat dissipation by reducing the
layers heat must travel through to the ambient. This results in a
more durable relay and a longer usable relay lifetime.
Using SSRs with Electromechanical Relays
Using an SAS or SAR relay to activate an electromechanical or
mercury contactor is possible. Electromechanical relays produce
a significant amount of electrical noise which could cause a solid
state relay to mistrigger. If these two types of relays are used
together, surge voltage protection may be required.
Caution
Sprecher+Schuh Solid State Relays can fail without warning (as is
possible with any electronic component).
Many temperature controllers and PLC’s use triacs as output
devices and most manufacturers place a “.022 microfared snubber” across their triacs for their own protection. This snubber can
produce enough leakage when the controller is “off” to cause the
solid state relay connected to it to go “on” or at least to not turn
“off” properly.
For this reason Sprecher+Schuh cannot recommend, condone or warrant any application of our products that could cause harm or injury,
in any manner, to any person upon such failure of the product.
Please contact the factory if you have any doubts or questions as to
whether this caution applies to your application.
SAS/R
A solution to this problem is to place a 10K ohm, 2 Watt resistor
(for 120 Volt control), across the input (control) of the solid state
relay.
The SAS and SAR AC input family typically do NOT need the
additional burden resistor. This saves you installation time and
cost.
Discount Schedule F
SSNA2012
visit www.sprecherschuh.com/ecatalog for the most up to date information
E
Solid State
Relays
Leakage - Effect on Input
E19
Technical Information
Series SAS Solid State Relays
Technical Information
SAS3-10-1(D)
SAS3-25-1(D)
SAS3-50-1(D)
SAS3-75-1(D)
SAS6-50-1(D)
SAS6-75-1(D)
Performance Data
Input
Voltage
Turn-on Voltage (min.)
Turn-on Current (min/max)
Turn-off Voltage (max.)
Reverse Voltage Protection
Impedance
Rc
[V]
[V]
[mA]
[V]
[V]
[Ω]
Output
Rated Amps (IOUT) - continuous with proper
heatsink
Voltage Drop (IOUT)
Surge Current Withstand
1 cycle, non-repetitive
1 second, nonrepetitive
Voltage Range (VOUT)
Peak Blocking Voltage
Frequency Range
Leakage (VOUT) Max.
Turn On (Max.)
Turn Off (Max.)
Holding Current (Min.)
Zero Voltage Switching
Dv/Dt (VOUT) Max.
Commutating Dv/Dt Snubbed for Power Factor =
I2t Rating (8.3 ms)
Thermal Resistance (R0JC)
Tj-115ºC
100-280V AC (4-32V DC)
100V AC (4V DC)
(5.4...10)
(3.5...8)
20V AC / 2mA (1V DC)
Not applicable (-75V DC)
20KΩ (1500Ω)
[ARMS]
10
25
50
75
50
50
[VAC]
1.1
1.2
1.3
1.1
1.3
1.1
[APEAK]
100
250
650
950
650
950
[APEAK]
40
100
130
140
130
140
[VAC]
[PIV]
[Hz]
[mA]
24-330
800
47-63
8
1/2 cycle
1/2 cycle
50
Yes
750
.5
60
1.48
24-330
800
47-63
8
1/2 cycle
1/2 cycle
50
Yes
750
.5
260
1.05
24-330
800
47-63
8
1/2 cycle
1/2 cycle
50
Yes
1000
.5
1620
.65
24-330
800
47-63
8
1/2 cycle
1/2 cycle
50
Yes
1000
.5
7010
.30
24-660
1200
47-63
8
1/2 cycle
1/2 cycle
50
Yes
500
.5
1620
.65
24-660
1200
47-63
8
1/2 cycle
1/2 cycle
50
Yes
500
.5
7010
.65
4000
3
4000
3
4000
3
4000
3
[mA]
V/µs
V/µs
[A2S]
[ºC/W]
General Characteristics
Dielectric Strength (Input-Output-Base)
Capacitance Input to Output
Ambient Temperature Range (Operating)
SCR Technology
4000
4000
3
3
0...40ºC (up to 80ºC with derating)
Alternistor (Inv. Parallel SCRs)
Approvals
Inv. Parallel SCRs
UL Recognize (E175459), CSA
Mechanical Data
Terminal Type
Control
Power
6-32 screw w/saddle clamp
8-32 screw w/saddle clamp
SAS
Solid State
Relays
E
[VRMS]
[pf]
[ºC]
E20
Discount Schedule F
visit www.sprecherschuh.com/ecatalog for the most up to date information
SSNA2012
Technical Information
Series SAR Solid State Relays
Technical Information
SAR6-25-1(D)
SAR6-40-1(D)
SAR6-50-1(D)
SAR6-75-1(D)
SAR6-100-1(D)
SAR6-30-3(D)
100 (4)
20/2mA(1)
N/A (-40)
10
100-280V AC
(4-28V DC)
5-15 (6-9)
100 (4)
20/2mA(1)
N/A (-40)
10
100 (4)
20/2mA(1)
N/A (-40)
10
100-280V AC
(4-32V DC)
9...30 (10-15)
100 (4)
20/2mA(1)
N/A (-75)
10
Performance Data
Input
Voltage
[V]
Turn-on Current (min/max)
[mA]
[V]
[V]
[V]
[KΩ]
Turn-on Voltage (min.)
Turn-off Voltage (max.)
Reverse Voltage Protection
Impedance
Rc
100-280V AC
(4-32V DC)
9-25 (3.5-8)
100 (4)
100 (4)
20/2mA(1)
20/2mA(1)
N/A (-75)
N/A (-75)
10
10
Output
Rated Amps (IOUT) - continuous with proper heatsink
Voltage Drop (IOUT)
Surge Current Withstand
[ARMS]
[VAC]
25
1.0
40
1.2
50
1.3
75
1.3
100
1.3
25(3 pole)
35 (2 pole)
1 per leg
1 cycle, non-repetitive
1 second, non-repetitive
Voltage Range (VOUT)
Peak Block Voltage
Frequency Range
[APEAK]
[APEAK]
[VAC]
[PIV]
[Hz]
[mA]
250
100
48-660
1400
47-63
10
1/2 Hz
1/2 Hz
100
Yes
1000
.5
1350
250
150
48-660
1400
47-63
10
1/2 Hz
1/2 Hz
100
Yes
1000
.5
1350
120
200
48-660
1200
47-63
8
1/2 Hz
1/2 Hz
50
Yes
500
.5
7200
1500
300
24-660
1200
47-63
8
1/2 Hz
1/2 Hz
100
Yes
500
.5
15000
2000
400
24-660
1200
48-63
8
1/2 Hz
1/2 Hz
100
Yes
500
.5
20000
650
130
24-660
1400
48-63
1
1/2 Hz
1/2 Hz
100
Yes
100
.5
1350
4000
3
4000
3
4000
3
4000
3
Leakage (VOUT) Max.
Turn On (Max.)
Turn Off (Max.)
Holding Current (Min.)
Zero Voltage Switching
[mA]
Dv/Dt (VOUT) Max.
Commutating Dv/Dt Snubbed for Power Factor =
V/µs
I2t Rating (8.3 ms)
[A2S]
General Characteristics
Dielectric Strength (Input-Output-Base)
Capacitance Input to Output
Ambient Temperature Range (Operating)
[VRMS]
[pf]
[ºC]
4000
4000
3
3
0 to 40ºC (up to 80ºC with derating)
Alternistor
(Inv. Parallel SCRs)
SCR Technology
Approval
Inv. Parallel SCRs
UL Recognize (E175459), CSA
Mechanical Data
24-10
7-9
8-3
40
24-10
7-9
24-10
7-9
E
SAR
Output Terminals
[AWG]
[in-lbs]
[AWG]
[in-lbs]
Solid State
Relays
Wire Size
Input Terminals
Discount Schedule F
SSNA2012
visit www.sprecherschuh.com/ecatalog for the most up to date information
E21
Wiring Diagrams
Series SAS(R) Solid State Relays
Wiring Diagrams
AC Input
DC Input
I shunt
V limit
All SAS3/6 with DC input
SAR6-25-1D
SAR6-40-1D
All SAS3/6 with AC input
SAR6-25-1
SAR6-40-1
DC Input
AC Input
I shunt
V limit
SAR6-50-1
SAR6-75-1
SAR6-100-1
SAR6-50-1D
SAR6-75-1D
SAR6-100-1D
E
–
Solid State
Relays
+
T2
T3
T1
T2
T3
T1
T2
T3
SAS/R
T1
delta
wye
star
SAR6-30-3(D)
E22
Discount Schedule F
visit www.sprecherschuh.com/ecatalog for the most up to date information
SSNA2012
Dimensions
Series SAS(R) Solid State Relays
SAS6(3) Panel Mount Relays
Dimensions are in millimeters (inches). Dimensions not intended for manufacturing purposes.
1.75
(44.5)
1.10
(27.9)
8 - 32
Thread
.19 (4.8)
.30
(7.6)
2
1
1.70
(43.2)
1.875
(47.6)
2.25
(57.1)
4-
.172 (4.4)
Dia. 2 places
3+
.53
(13.5)
1.00
(25.4)
6 - 32
Thread
Case temp.
reference
point
.90
(22.9)
DIN-Rail Mount 1 pole 25/40 Amp
Front View
25 Amp
Front View
40 Amp
Side View
25/40 Amp
SAS/R
Solid State
Relays
E
Discount Schedule F
SSNA2012
visit www.sprecherschuh.com/ecatalog for the most up to date information
E23
Dimensions
Series SAS(R) Solid State Relays
DIN-Rail Mount 1 Pole 50/75/100 Amp
Dimensions are in millimeters (inches). Dimensions not intended for manufacturing purposes.
50 Amp
75 Amp
100 Amp
DIN-Rail Mount 3 Pole 25 Amp
SAS/R
Solid State
Relays
E
E24
Discount Schedule F
visit www.sprecherschuh.com/ecatalog for the most up to date information
SSNA2012
Dimensions
Series SAS(R) Solid State Relays
SAS Heatsinks
Dimensions are in millimeters (inches). Dimensions not intended for manufacturing purposes.
Part Number: SAS-HTSK-1.0
(for most 35-60 amp applications)
1.0 C/W capability
Part Number: SAS-HTSK-1.6
(for most 10-40 amp applications)
1.6 C/W capability
Part Number: SAS-HTSK-1.2
(for most 8-60 amp applications)
1.2 C/W capability
Thermal Pad (SAS-THERMPAD5)
SAS
Solid State
Relays
E
Discount Schedule F
SSNA2012
visit www.sprecherschuh.com/ecatalog for the most up to date information
E25