Section
SECTION 7
7
Relays - Energy Conser ving
www.magnecraft.com
847-441-2540
Latching, Sequence and Impulse Relays – Application Data
Energy Conservation Relays
In many applications it is important for the customer to conserve electrical energy. One approach to energy conservation in
an electrical system is to use relays that do not require constant power to maintain contact closure.
“Latching relay” is a generic term that is used to describe a relay that maintains its contact position after the control power
has been removed. Latching relays allow a customer to control a circuit by simply providing a single pulse to the relay control
circuit. Latching relays are also desirable when the customer needs to have a relay that maintains its position during an
interruption of power.
There are three main types of Latching relays. Magnetic latching, Mechanical Latching and Impulse Sequencing.
Magnetic Latching Relays
Magnetic Latching relays require one pulse of coil power to move their contacts in one direction, and another, redirected pulse
to move them back. Repeated pulses from the same input have no effect. Magnetic Latching relays are useful in applications
where interrupted power should not be able to transition the contacts.
Magnetic Latching relays can have either single or dual coils. On a single coil device, the relay will operate in one direction
when power is applied with one polarity, and will reset when the polarity is reversed. On a dual coil device, when polarized
voltage is applied to the reset coil the contacts will transition. AC controlled magnetic latch relays have single coils that
employ steering diodes to differentiate between operate and reset commands.
785
755
303
Series
Mechanical Latching Relays
Mechanical latching relays use a locking mechanism to hold their contacts in their last set position until commanded to change
state, usually by means of energizing a second coil. Since the relay does not rely on a magnet, the locking strength will
not degrade over time or weaken during thermal cycling. The contacts will remain locked in the directed position until the
opposing coil has been energized. Packaging machinery that places several units into a single container would be a good
example.
SECTION 7
385
Impulse Relays
Impulse relays are a form of latching relay that transfers the contacts with each pulse. Many impulse relays are made up of a
magnetic latch relay and a solid state steering circuit that, upon application of power, determines which position the relay is
in and energizes the opposite coil. The contacts transfer and hold that position when power is removed. When reenergized,
the contacts transfer again and hold that position, and so on. In order to transfer the contacts, one simply provides a single
unidirectional pulse. There is no need to redirect the control pulse or reverse the polarity.
Impulse relays can be used as wear equalizers. They are well suited for applications such as turning a single device on or off
from one or more locations with a single momentary switch or push button at each station. For example, a conveyor could be
started and/or stopped from multiple locations by means of a single button at each position.
711
7/2
Magnecraft Solution Guide 105A
Alternating Relay – Application Data
712 Alternating Relay
In many industrial pumping applications, two identical pumps are used for the same job. A standby unit is available in case
the first pump fails. However, a completely idle pump might deteriorate and provide no safety margin. Alternating relays
prevent this by assuring that both pumps get equal run time.
The Model 712 Series Alternating Relay is designed for duplex pumping systems where it is desirable to equalize pump run
time. The solid state alternating circuit drives an internal electromechanical relay. A continuous power source and control
switch is required.
The control switch (float, pressure or other isolated contact) is connected as shown in the respective wiring diagrams. Each
time the control switch is opened the output contacts will change status. Indicator lights on the case show the internal relay
status.
Setting the top toggle switch to the “center position” alternates the load; while setting the switch to “Load 1” or “Load 2” will
lock the relay in the respected position, preventing alternation.
The alternating relay approach isn’t limited to pumping applications. The control switches could be thermostats or pressure
switches, and the loads could be fans or compressors.
Applications:
INDUSTRIAL
APPLIANCES
PACKING
MACHINES
PUMPING
MACHINES
COMPRESSORS
INDUSTRIAL
FANS
SECTION 7
INDUSTRIAL
AUTOMATION
www.magnecraft.com
Magnecraft Solution Guide 105A
847-441-2540
7/3
711 Impulse Sequencing Relay/DPDT 12 Amp Rating
LED Indicates
Closed Contact
The 711 Impulse Sequencing relay is an
alternating relay used for load sharing
or toggling ON/OFF of the load. Unidirectional momentary pulses cause the
contacts to transfer from one side to the
other. There is no need to redirect the
polarity of the input in order to change
and maintain states.
Optional Flange
and DIN Adapter
Mounting
UL Recognized
File No. E43641
Standard Blade Style Socket
Mounting Configuration
General Specifications
(UL 508)
Contact Characteristics
Number and type of Contacts
Contact materials
Thermal (Carrying) Current
Maximum Switching Voltage
Switching Current @ Voltage
Units
~
Minimum Switching Requirement
Coil Characteristics
Voltage Range
~
Operating Range
Average consumption
~
Drop-out voltage threshold
~
Performance Characteristics
Electrical Life (UL508)
Mechanical Life
Operating time (response time)
Dielectric strength
Operations @ Rated Current
Unpowered
Between coil and contact
Between poles
Between contacts
SECTION 7
Environment
Product certifications
Ambient air temperature
around the device
Vibration resistance
Shock resistance
Degree of protection
Weight
Standard version
Storage
Operation
Operational
1
3
12
22
4
6
14
24
7
9
11
21
A
B
A1
A2
NEMA
IEC
V
V
VA
W
(Resistive)
~
~
~
ms
V(rms)
V(rms)
V(rms)
°C
°C
g-n
g-n
grams
WIRING DIAGRAM
+
7/4
~
% of Nominal
A
V
Resistive
Resistive
HP
HP
mA
711XBX
DPDT
Silver Alloy
12
300
12A @ 240V 50/60Hz
12A @ 28V
1/3 @ 120 VAC
1/2 @ 240 VAC
100 @ 5VDC (.5W)
12….120, 50/60 Hz
12….110
85% to 110%
80% to 110%
1.8
1.8
15%
10%
100,000
10,000,000
35
1500
500
1500
UL
-40…+85
-40…+55
3, 10 - 55 Hz
10
IP 40
110
.187 QUICK CONNECTS
INDICATING LEDS
–
2.63
(66.8)
7&1
9&3
CONTACTS
7&4
CLOSED
9&6
1.40
(35.6)
1.54
(39.1)
Magnecraft Solution Guide 105A
www.magnecraft.com
847-441-2540
711 Relay with the
70-463-1 Socket
Standard Part Numbers
BOLD-FACED PART NUMBERS ARE NORMALLY STOCKED
Part Number
Part Number
(Without LEDs)
(With LEDs)
Nominal Voltage
Coil Resistance
AC Operated
12 VAC 50/60 HZ
24 VAC 50/60 HZ
120 VAC 50/60 HZ
70 Ohms
220 Ohms
5700 Ohms
711XBXC-12A
711XBXC-24A
711XBXC-120A
711XBXCL-12A
711XBXCL-24A
711XBXCL-120A
DC Operated
12 VDC
24 VDC
48 VDC
110 VDC
70 Ohms
220 Ohms
880 Ohms
5700 Ohms
711XBXC-12D
711XBXC-24D
711XBXC-48D
711XBXC-110D
711XBXCL-12D
711XBXCL-24D
711XBXCL-48D
711XBXCL-110D
Other mating sockets see Section 2: 70-788EL11-1, 70-124-1, 70-124-2,
70-178-1, 70-178-2
Relay
Adapters
3.6
(91)
70-463-1
SOCKET
1.03
(26)
0.40
(10)
16-1351
Metal Hold-Down Clip
16-711C4
See Section 3 p.8-11
3.14
(80)
SECTION 7
Section 3, p.14-16
16-711C1
Section 3, p.14-16
2.63
(66.8)
3.18
(81)
Magnecraft Solution Guide 105A
7/5
Advantages of the 712 Alternating Relay
The Complete
System
Solution!
Highest Grade
Electronic Components
RoHS Compliant.
The Model 712 series Alternating Relay is designed for duplex
pumping systems where it is desirable to equalize pump run time.
The solid state alternating circuit drives an internal electromechanical
relay. A continuous power source and control switch are required.
The control switch (float, pressure or other isolated contact) is
connected between the L1 terminal and the control terminal. Each
time the control switch is opened the output contacts will change
status. Indicator lights on the case show the internal relay status.
UL Listed when 712 Relay
and Octal Socket are Combined
UL Approved for Field Replacement.
Setting the top toggle switch to Load 1 or Load 2 will lock the relay
in position, preventing alternation.
• Offers a “one stop solution” for
your pump management system.
• Several configurations available
to meet your individual needs.
• Switching capabilities up to 12 amps.
SECTION 7
• Two LED status indicators; indicate status
of the separate loads independently.
• Dual Voltage Coils eliminate the
need to specify AC or DC (AC only
for 240 volts).
See Section 3 p.14-16
• Only 36 mm’s wide; does not take up
any additional room on the DIN rail.
• Color and appearance designed for
high visibility in all environments.
• Engineering availability allows for
customized control system solutions.
7/6
16-711C1
FLANGE ADAPTER
16-711C4
DIN RAIL ADAPTER
Magnecraft Solution Guide 105A
Load 1 Indicator
Indicates when Load 1 is Active.
Load 2 Indicator
Indicates when Load 2 is Active.
Top Toggle Switch
To Lock Load in Position.
Industry Proven Power
Relay Technology
12 Amp Relay with
Dual Voltage Capability.
SECTION 7
Industry Standard 8 or 11 Pin
Octal Socket Compatible
Easy Installation and Replacement.
Magnecraft Solution Guide 105A
7/7
712 Alternating Relay/DPDT, 12 Amp Rating
C
UL US
UL Listed When Used With
Magnecraft Sockets.
Toggle Switch
Load 1 Indicator
Load 2 Indicator
Proven Relay
Technology
UL Recognized
File No. E43641
Optional Flange
Mounting
712 Relay with the
70-750DL8-1 Socket
WHITE
General Specifications
(UL 508)
Contact Characteristics
Number and type of Contacts
Units
Contact materials
Thermal (Carrying) Current
Maximum Switching Voltage
Current rating
Switching voltage
~
~
~
Minimum Switching Requirement
Coil Characteristics
Voltage Range
Operating Range
% of Nominal
0.5
100
Release of Control Switch
(Resistive)
100,000
~
V(rms)
10,000,000
1500
~
~
V(rms)
V(rms)
500
1500
~
Mechanical Life
Rated insulation voltage
Dielectric strength
rms voltage
Environment
Product certifications
Ambient air temperature
around the device
Degree of protection
Weight
Maximum
Standard version
Storage
Operation
A
V
Resistive
Resistive
HP
HP
Pilot Duty
mA
s
ms
Drop-out voltage threshold
Operations @
Rated Current
Unpowered
Between coil
and contact
Between poles
Between contacts
712XBXCK
DPDT, PIN 9 - NO
PIN 11 - NC
Silver Alloy
12
300
12A @ 240V 50/60Hz
12A @ 30V
1/3 @ 120 VAC
1/2 @ 240 VAC
B300
100 @ 5 VDC (.5W)
12, 24, 120
240
80% to 110%
80% to 110%
1.8
1.8
15%
10%
~
Performance Characteristics
Electrical Life (UL 508)
712XBXC
DPDT CROSS
WIRED
V
V
V
V
V
W
V
VDC
~
~
Average consumption
Timing Characteristics
Time Delay - Fixed
Reset Time
Alternating Action
SECTION 7
~
712XAXC
SPDT
UR, CSA, CE
-30…+70
-20…+60
IP 40
120
°C
°C
grams
1.4
(36)
0.08
(2)
712XBXCK1
DPDT, PIN 9 - NC
PIN 11 - NO
2.6
(65)
1.73
(44)
7/8
0.4
(10.2)
3.3
(83.5)
Magnecraft Solution Guide 105A
www.magnecraft.com
Standard Part Numbers
847-441-2540
BOLD-FACED PART NUMBERS ARE NORMALLY STOCKED
Timing Range
Contact Configuration
Rated Load Current
Part Numbers
Input Voltage
8 Pin Octal Base, SPDT
712XAXC-12V
712XAXC-24V
712XAXC-120V
712XAXC-240A
12 VAC/VDC
24 VAC/VDC
120 VAC/VDC
240 VAC
0.5s
0.5s
0.5s
0.5s
Fixed
Fixed
Fixed
Fixed
SPDT
SPDT
SPDT
SPDT
12
12
12
12
Amps
Amps
Amps
Amps
8 Pin Octal Base, DPDT (CROSS WIRED)
712XBXC-12V
712XBXC-24V
712XBXC-120V
712XBXC-240A
12 VAC/VDC
24 VAC/VDC
120 VAC/VDC
240 VAC
0.5s
0.5s
0.5s
0.5s
Fixed
Fixed
Fixed
Fixed
DPDT
DPDT
DPDT
DPDT
12
12
12
12
Amps
Amps
Amps
Amps
11 Pin Octal Base, DPDT (PIN 11 NC)
712XBXCK-12V
712XBXCK-24V
712XBXCK-120V
712XBXCK-240A
12 VAC/VDC
24 VAC/VDC
120 VAC/VDC
240 VAC
0.5s
0.5s
0.5s
0.5s
Fixed
Fixed
Fixed
Fixed
DPDT
DPDT
DPDT
DPDT
12
12
12
12
Amps
Amps
Amps
Amps
11 Pin Octal Base, DPDT (PIN 11 NO)
712XBXCK1-12V
712XBXCK1-24V
712XBXCK1-120V
712XBXCK1-240A
12 VAC/VDC
24 VAC/VDC
120 VAC/VDC
240 VAC
0.5s
0.5s
0.5s
0.5s
Fixed
Fixed
Fixed
Fixed
DPDT
DPDT
DPDT
DPDT
12
12
12
12
Amps
Amps
Amps
Amps
Part Number Builder
Series
712
Contact Configuration
XAX = SPDT
XBX = DPDT
Pin Orientation
C = 8 OCTAL
CK = 11 PIN OCTAL (PIN 11 NC)
CK1 = 11 PIN OCTAL (PIN 11 NO)
–
–
Input Voltage
12V = 12 VAC/VDC
24V = 24 VAC/VDC
120V = 120 VAC/VDC
240A = 240 VAC
Other mating sockets see Section 2: 70-750DL11-1, 70-750E8-1, 70-750E11-1,
70-464-1, 70-465-1, 70-169-1, 70-170-1
Relay
Adapters
70-750DL8-1
SOCKET
1.45
(37)
1.1
(28)
16-1344
Metal Hold-Down Clip
See Section 3 p.8-11
0.08
(2)
2.6
(65)
16-711C4
SECTION 7
Section 3, p.14-16
0.4
(10.2)
16-711C1
Section 3, p.14-16
2.95
(75)
3.77
(96)
Magnecraft Solution Guide 105A
7/9
Theory of Operation
712XAXC
+
S1
Wiring Diagram:
712XAXC
5
4
8 Pin Octal, with an SPDT
Contact Configuration.
V
712XBXC
–
+
1
5
LB
LA
–
V
6
A.DIAGRAMS
WIRING
2
+
S1
7
8
S1
1
LB
4
LA
V
6
10
2
1) 8V PIN
OCTAL
SPDT
is Input
Voltage
3
S2
3
8
2
712XBX
2) 8 PIN OCTAL DPDT CROSSWIRED
•3-5 INTERNALLY JUMPERED
LA is Load #1
LB is Load #2
S1 is Control Switch #1
If the Top Toggle Switch is in “Alternate” position closing Switch S1 will alternate the loads between LA and LB.
If the Top Toggle Switch is in “Lock 1” position Load LA is ON and Load LB is OFF. Switch S1 is not used in this mode.
3) 11 PIN OCTA
•PIN 9 NORM
•PIN 10 COM
•PIN 11 NOR
If the Top Toggle Switch is in “Lock 2” position Load LA is OFF and Load LB is ON. Switch S1 is not used in this mode.
712XAXC
+
S1
5
4
1
V
712XBXC
–
Wiring Diagram:
712XBXC (DUPLEX)
3
8 Pin Octal,
a DPDT
8 with
LB
Contact 2
Configuration.
LA
Duplex Capabilities.
+
S2
S1
3
2
1
5
V
712XBXCK
–
6
+
S1
7
8
LB
LA
SECTION 7
) 8 PIN OCTAL
SPDT
V is Input Voltage
2) 8 PINLAOCTAL
is LoadDPDT
#1 CROSSWIRED
•3-5 INTERNALLY
LB is Load #2 JUMPERED
S1 is Control Switch #1
S2 is Control Switch #2
B.
4
10
2
6
V
712XBX
+
–
S1
8
9
LB
11
1
3 LA
4
6
10
2
3) 11 PIN OCTAL DPDT (K)
•PIN 9 NORMALLY OPEN
•PIN 10 COMMON
•PIN 11 NORMALLY CLOSED
If the Top Toggle Switch is in “Alternate” position closing Switch S1 will alternate the loads between LA and LB while switch
S2 will only control LA.
4) 11 PIN OCTA
•PIN 9 NORMA
•PIN 10 COMM
•PIN 11 NORM
If the Top Toggle Switch is in “Lock 1” position Switch S1 will control LA while switch S2 will control LB.
If the Top Toggle Switch is in “Lock 2” position Switch S1 will control LB while switch S2 will control LA.
Duplex (Cross Wired) Functionality: This model operates the same as alternating relays except when both the control
Switches S1 and S2 are closed, Load A and Load B energize simultaneously. The DPDT 8-pin, cross wired option, allows
extra system load capacity through simultaneous operation of both motors when needed. Relay contacts are not isolated.
7/10
V
Magnecraft Solution Guide 105A
712XBXC
+
S2
D
–
+
5 Wiring
6 Diagram:
7
712XBXCK
LB
2
8 with a DPDT
11 Pin Octal
LA
Contact Configuration.
1
DIAGRAMS
Pin 9 is Normally Open
and Pin 11 is Normally
Closed.
S1
2) 8 PIN OCTAL DPDT CROSSWIRED
•3-5 INTERNALLY JUMPERED
S1
6
4
2
+
–
V
S1
8
9
LB
11
1
3 LA
10
712XBXCK1
C.
4
10
2
3) 11V PIN
OCTAL
DPDT (K)
is Input
Voltage
LA
is
Load
#1
•PIN 9 NORMALLY OPEN
LB is10
Load
#2
•PIN
COMMON
S1 is Control Switch #1
•PIN 11 NORMALLY CLOSED
6
V
–
8
11 LB
9
1
3 LA
4) 11 PIN OCTAL DPDT (K1)
•PIN 9 NORMALLY CLOSED
•PIN 10 COMMON
•PIN 11 NORMALLY OPEN
If the Top Toggle Switch is in “Alternate” position closing Switch S1 will alternate the loads between LA and LB.
If the Top Toggle Switch is in “Lock 1” position Load LA is ON and Load LB is OFF. Switch S1 is not used in this mode.
If the Top Toggle Switch is in “Lock 2” position Load LA is OFF and Load LB is ON. Switch S1 is not used in this mode.
712XBXCK
+ Wiring
– Diagram:
S1
V
712XBXCK1
6 11 Pin8 Octal with a DPDT
Contact
9 Configuration.
LB
Pin
9
is Normally
Closed
10
11
and Pin 11 is Normally
Open.1
2
3 LA
4
3) 11 PIN OCTAL
DPDT (K)
•PIN 9 NORMALLY
OPEN
•PIN 10 COMMON
•PIN 11 NORMALLY CLOSED
712XBXCK1
+
S1
4
10
2
6
V
–
8
11 LB
9
1
D.
3 LA
is Input
Voltage
4) 11V PIN
OCTAL
DPDT (K1)
LA
is
Load
#1
•PIN 9 NORMALLY
CLOSED
LB is Load #2
•PIN
COMMON
S1 10
is Control
Switch #1
•PIN 11 NORMALLY OPEN
SECTION 7
ING
3
V
712XBXCK
If the Top Toggle Switch is in “Alternate” position closing Switch S1 will alternate the loads between LA and LB.
If the Top Toggle Switch is in “Lock 1” position Load LA is ON and Load LB is OFF. Switch S1 is not used in this mode.
If the Top Toggle Switch is in “Lock 2” position Load LA is OFF and Load LB is ON. Switch S1 is not used in this mode.
Note: Input voltage must be applied at all times for proper alternation. The use of a solid state control switch for S1 or S2
may not initiate alternation correctly. S1 or S2 voltage must be from the same supply as the unit’s input voltage (see wiring
diagrams). Loss of input voltage resets the unit; Load A becomes the lead load for the next operation.
Magnecraft Solution Guide 105A
7/11
755 Magnetic Latching Octal Relay/DPDT, 16 Amp Rating
C
UL US
UL Listed When Used With
Magnecraft Sockets.
High strength magnetic
latch helps contacts hold
during vibration.
Single and Dual (DC only)
coil available.
UL Recognized
File No. E43641
16 Amp switching
capabilities
Standard 11 pin octal
socket mounting.
General Specifications
(UL 508)
Contact Characteristics
Number and type of Contacts
Contact materials
Thermal (Carrying) Current
Maximum Switching Voltage
Switching Current @ Voltage
Units
~
Minimum Switching Requirement
Coil Characteristics
Voltage Range
~
Operating Range
~
% of Nominal
Average consumption
~
Drop-out voltage threshold
~
Performance Characteristics
Electrical Life (UL508)
Mechanical Life
Operating time (response time)
Dielectric strength
SECTION 7
Environment
Product certifications
Ambient air temperature
around the device
Vibration resistance
Shock resistance
Degree of protection
Weight
Operations @ Rated Current
Unpowered
Between coil and contact
Between poles
Between contacts
Standard version
Storage
Operation
Operational
A
V
Resistive
Resistive
HP
HP
Pilot Duty
mA
V
V
12….240, 50/60 Hz
12….125
85% to 110%
80% to 110%
2
1.64
15%
10%
VA
W
(Resistive)
~
~
~
755XBX
DPDT
Silver Alloy
16
300
16A @ 277V 50/60Hz
16A @ 28V
1/3 @ 120 VAC
1/2 @ 240 VAC
B300
100 @ 5 VDC (.5W)
ms
V(rms)
V(rms)
V(rms)
100,000
10,000,000
30
2500
1500
2500
UL
-40…+85
-40…+55
3, 10 - 55 Hz
10
IP 40
170
°C
°C
g-n
g-n
grams
OCTAL BASE LATCHING RELAY
RESET
RESET
22
5
12
4
14
21
COIL 2
24
7
9
10
2
11
1
34
SET
7/12
14
A2
11 31
Single Coil (AC)
22
5
12
4
32
8
3
A1
COMMON
6
6
21
32
8
3
9
A1 2
NEMA
IEC
24
7
10
11
1
11
COIL
1.4
(35.4)
34
A2
31
1
SET
Dual Coil (DC)
2.4
(61)
1.4
(34.9)
Magnecraft Solution Guide 105A
www.magnecraft.com
847-441-2540
The 755 Magnetic Latching
relay, with an 11 pin octal base,
operates by using a pulsed input.
A permanent magnet maintains
the last position until a redirected
second pulse moves the contacts
back to the original state.
755 Relay with the
70-750EL11-1 Socket
Standard Part Numbers
BOLD-FACED PART NUMBERS ARE NORMALLY STOCKED
Coil Resistance
Part Number
Nominal Voltage
AC Operated (Single Coil)
6 VAC 50/60 HZ
12 VAC 50/60 HZ
24 VAC 50/60 HZ
120 VAC 50/60 HZ
240 VAC 50/60 HZ
32 Ohms
120 Ohms
470 Ohms
10,000 Ohms
40,000 Ohms
755XBXC-6A
755XBXC-12A
755XBXC-24A
755XBXC-120A
755XBXC-240A
DC Operated (Dual Coil)
6 VDC
12 VDC
24 VDC
48 VDC
110/125 VDC
22/22 Ohms
90/90 Ohms
350/350 Ohms
1,400/1,400 Ohms
9,000/9,000 Ohms
755XBXCD-6D
755XBXCD-12D
755XBXCD-24D
755XBXCD-48D
755XBXCD-110D
Part Number Builder
755
XBX
Series
Contact Configuration
755
DPDT = XBX
C
Coil Options
Single Coil = C
Double Coil = CD
–
240A
Coil Voltage
VAC = 6 - 240A
VDC = 6 - 125D
Other mating sockets see Section 2: 70-750E11-1, 70-750DL11-1,
70-465-1, 70-170-1
2.48
(63)
0.74
(19)
3.62
(92)
16-1351
Metal Hold-Down Clip
See Section 3 p.8-11
3.77
(96)
SECTION 7
70-750EL11-1
SOCKET
OTHER MATTING SOCKETS;
70-750E11-1, 70-750DL11
70-464-1, 70-170-5
3.77
(96)
Magnecraft Solution Guide 105A
2.95
(75)
7/13
785 Magnetic Latching Square Base Relay/DPDT, 16 Amp Rating
C
UL US
High strength magnetic
latch helps contacts hold
during vibration.
UL Listed When Used With
Magnecraft Sockets.
Single and Dual (DC only)
coil available.
UL Recognized
File No. E43641
16 Amp switching
capabilities
Standard .1875 blade
style socket mounting.
WHITE
General Specifications
Units
~
~
Minimum Switching Requirement
Coil Characteristics
Voltage Range
~
Operating Range
~
Average consumption
~
% of Nominal
~
Drop-out voltage threshold
SECTION 7
Performance Characteristics
Electrical Life (UL508)
Mechanical Life
Operating time (response time)
Dielectric strength
3
12
4
22
6
14
24
Standard version
Storage
Operation
Operational
1
12
4
14
7
9
7
21
11
B
A
A2
A1
A1
OPERATE
Single Coil (DC)
V
V
6....240, 50/60 Hz
6....125
85% to 110%
80% to 110%
3
1.4
15%
10%
VA
W
100,000
5,000,000
20
1500
1500
1500
ms
V(rms)
V(rms)
V(rms)
UL, CSA, CE
-40...+85
-40...+55
3, 10 - 55 Hz
10
IP 40
87
°C
°C
g-n
g-n
grams
11
RESET
A
V
Resistive
Resistive
Resistive
HP
HP
Pilot Duty
mA
(Resistive)
~
~
~
Between coil and contact
Between poles
Between contacts
WIRING DIAGRAMS
A
7/14
Operations @ Rated Current
Unpowered
Environment
Product certifications
Ambient air temperature
around the device
Vibration resistance
Shock resistance
Degree of protection
Weight
1
785XBX
Standard
DPDT
Silver Alloy
16
300
16A @ 277V 50/60Hz
16A @ 120V 50/60Hz
16A @ 28V
1/3 @ 120 VAC
1/2 @ 240 VAC
B300
100 @ 5 VDC (.5W)
(UL 508)
Contact Characteristics
Number and type of Contacts
Contact materials
Thermal (Carrying) Current
Maximum Switching Voltage
Switching Current @ Voltage
NEMA
IEC
22
6
24
1
12
3
22
4
14
6
24
9
21
11
3
RESET
5
B1
COIL
2
8
B2
OPERATE
COIL 1
B
A2
Dual Coil (DC)
7
COMMON
A
A1
RESET
8
B2
0.1875 QUICK
CONNECTS
1.4
(35.5)
9
21
OPERATE
B
A2
Single Coil (AC)
1.9
(48.4)
0.032
(0.812)
1.53
(38.8)
Magnecraft Solution Guide 105A
www.magnecraft.com
847-441-2540
The 785 Magnetic Latching relay, with
an Industry Standard square base,
operates by using a pulsed input. A
permanent magnet maintains the last
position until a redirected second
pulse moves the contacts back to the
original state.
Standard Part Numbers
BOLD-FACED PART NUMBERS ARE NORMALLY STOCKED
Coil Resistance
Part Number
Nominal Voltage
AC Operated (Single Coil)
6 VAC 50/60 HZ
12 VAC 50/60 HZ
24 VAC 50/60 HZ
120 VAC 50/60 HZ
240 VAC 50/60 HZ
32 Ohms
120 Ohms
470 Ohms
10,000 Ohms
40,000 Ohms
785XBXC-6A
785XBXC-12A
785XBXC-24A
785XBXC-120A
785XBXC-240A
DC Operated (Dual Coil)
6 VDC
12 VDC
24 VDC
48 VDC
110/125 VDC
22/22 Ohms
88/88 Ohms
350/350 Ohms
1,400/1,400 Ohms
9,000/9,000 Ohms
785XBXCD-6D
785XBXCD-12D
785XBXCD-24D
785XBXCD-48D
785XBXCD-110D
DC Operated (Single Coil)
12 VDC
24 VDC
110/125 VDC
120 Ohms
470 Ohms
10,000 Ohms
785XBXC-12D
785XBXC-24D
785XBXC-125D
Part Number Builder
785
XBX
Series
Contact Configuration
785
DPDT = XBX
C
Coil Options
Single Coil = C
Double Coil = CD
–
240A
Coil Voltage
VAC = 6 - 240A
VDC = 6 - 125D
Other mating sockets see Section 2: 70-788EL11-1, 70-124-1, 70-124-2,
70-178-1, 70-178-2
2.93
(74)
2.48
(63)
3.7
(96)
3.62
(92)
Magnecraft Solution Guide 105A
SECTION 7
70-788EL11-1
SOCKET
7/15
303 Magnetic Latching Power Relay/DPDT, DPST & SPDT, 30 Amp Rating
Several Mounting
Conditions
Blow-out Magnets
Available for DC
Switching.
30 Amp Switching
Capacity
0.250”
Quick Connect
Terminals
General Specifications
(UL 508)
Contact Characteristics
Number and type of Contacts
Contact materials
Thermal (Carrying) Current
Maximum Switching Voltage
Switching Current @ Voltage
Units
~
~
Current rating with magnetic blowout
- Code 69
Minimum Switching Requirement
SECTION 7
7/16
~
% of Nominal
~
Average consumption
~
Drop-out voltage threshold
~
Performance Characteristics
Electrical Life (UL508)
Mechanical Life
Operating time (response time)
Rated insulation voltage
Dielectric strength
rms voltage
Environment
Product certifications
Ambient air temperature
around the device
Vibration resistance
Shock resistance
Degree of protection
Weight
A
V
General Purpose
Resistive
HP
HP
A
mA
Coil Characteristics
Voltage Range
Operating Range
The Class 303 relay has been
designed for 30 Amp loads by
using 0.250” quick connect
terminals and other proven materials
used by Magnecraft power relays.
Contact gaps are 2 millimeters wide
to meet most standards for creepage
and clearance. Its magnetic latching
mechanism keeps the contact in the
last set position until commanded
to change by means of a separate
redirected signal. The optional
magnetic blowout allows for high
voltage DC switching applications.
Operations @ Rated Current
Unpowered
Between coil and contact
Between poles
Between contacts
Standard version
Storage
Operation
Operational
V
V
VA
W
(Resistive)
~
~
~
ms
V(rms)
V(rms)
V(rms)
°C
°C
g-n
g-n
grams
303
DPDT, DPST (NO), SPDT (DM-DB)
Silver Alloy
30
600
30A @ 300V 50/60Hz
30A @ 28V
1 @ 120 VAC
2 @ 208 VAC to 600 VAC
10 @ 150 VDC (SPDT)
5 @ 150 VDC (DPDT, DPST)
100 @ 5 VDC (.5W)
12....240
12….125
85% to 110%
80% to 110%
2
1.64
15%
10%
6,000
100,000
30
4000
1000
2200
UL
-40…+85
-40…+55
3, 10 - 55 Hz
10
IP 40
170
Magnecraft Solution Guide 105A
www.magnecraft.com
SIDE FLANGE - CODE C1
TOP FLANGE - CODE C3
Standard Part Numbers
847-441-2540
DIN MOUNT - CODE C4
BOLD-FACED PART NUMBERS ARE NORMALLY STOCKED
Nominal Voltage
Coil Resistance Coil A/B
Part Number
Contact Configuration
12 VAC 50/60 HZ
24 VAC 50/60 HZ
120 VAC 50/60 HZ
240 VAC 50/60 HZ
12 VDC
24 VDC
24 VDC
48 VDC
110-125 VDC
12 VDC
12 VDC
30/30 Ohms
180/180 Ohms
3,800/3,800 Ohms
16,000/16,000 Ohms
85/85 Ohms
340/340 Ohms
340/340 Ohms
1,360/1,360 Ohms
9,000/9,000 Ohms
85/85 Ohms
85/85 Ohms
303XBXC1-12A
303XBXC1-24A
303XBXC1-120A
303XBXC1-240A
303XBXC1-12D
303XBXC1-24D
303XBXC4-24D
303XBXC1-48D
303XBXC1-110/125D
303BXXC1-12D
303XHXC1D-12D
DPDT
DPDT
DPDT
DPDT
DPDT
DPDT
DPDT
DPDT
DPDT
DPST (NO)
SPDT (DM-DB)
Option
DC Switching
Option, Magnetic
Blowout = 69
C1
Cover Options
Side Flange = C1
Top Flange = C3
DIN Mount = C4
Coil Options
Single Coil = No Code
Dual Coil = D
–
240A
Coil Voltage
VAC = 12 - 240A
VDC = 12 - 125D
SECTION 7
Part Number Builder
303
XBX
Series
Contact Configuration
303
DPDT = XBX
DPST (NO) = BXX
SPDT (NC - NO, DB - DM) = XHX
Magnecraft Solution Guide 105A
7/17
303 Magnetic Latching Power Relay/DPDT, DPST & SPDT, 30 Amp Rating continued
Several Mounting
Conditions1.9
PLUG-IN - CODE C
0.25" QUICK CONNECTS
(49.6)
1.4 MAX
(35.8)
1
2
3
4
5 Amp Switching
6
30
Capacity
A
0.250”
Quick Connect
Terminals
B
1.53 MAX
(38.9)
SIDE FLANGE - CODE C1
SIDE FLANGE - CODE C1
1.9
(49.6)
2.75
(70)
0.38
(9.53)
0.25" QUICK
CONNECTS
0.187 MAX
(4.75)
2.5
(63.5)
0.16
(4)
0.062 MAX
(1.57)
0.625
(15.9)
TOP FLANGE - CODE C3
TOP FLANGE - CODE C3
0.06
(1.57)
SECTION 7
0.25" QUICK
CONNECTS
1.71
(43.5)
1.53
(38.9)
2.53
(64.3)
0.5
(12.7)
1.9
(49.6)
7/18
35 mm
DIN Mount
0.14
(3.6)
0.25" QUICK CONNECTS
1.88
(47.75)
1.49
(37.9)
Magnecraft Solution Guide 105A
www.magnecraft.com
847-441-2540
TOP FLANGE - CODE C3
0.06
(1.57)
0.25" QUICK
CONNECTS
1.71
(43.5)
SIDE FLANGE - CODE C1
2.53
1.53
(64.3)
(38.9)
DIN MOUNT - CODE C4
TOP FLANGE - CODE C3
0.5
(12.7)
1.9
(49.6)
0.14
(3.6)
DIN MOUNT - CODE C4
0.25" QUICK CONNECTS
35 mm
DIN Mount
1.49
(37.9)
1.88
(47.75)
1.87
(47.5)
1.38
(35.1)
0.27
(6.9)
1.18
(29.97)
WIRING DIAGRAMS
2
3
4
5
6
A
RESET
1
3
5
B
A
2
4
1
2
3
4
5
6
6 RESET
B OPERATE
A
B
Magnecraft Solution Guide 105A
Single Coil (AC)
DPST (N.O.)
Single Coil (AC)
DPDT
2
3
5
RESET
OPERATE
OPERATE
Single Coil (DC)
DPDT
1
4
RESET
6
COIL 2
A
OPERATE
B
SECTION 7
1
COIL 1
Dual Coil (DC)
SPDT (N.C.-N.O)
DB-DM
7/19
385 Mechanical Latching Relay/DPDT to 6PDT, 15 Amp Rating
0.187”
Quick Connect
Terminals
Switch Up
to 6 Poles
The 385 relay is a mechanically latched,
electrically reset relay. It can be furnished with
two, four or six sets of double throw contacts.
The molded, plastic dust cover snaps onto a
standard DIN rail as well as incorporating
mounting slots for panel mounting. The 385
does not have a dominant coil. If both coils
are energized at the same time, all of the
normally open contacts close and all normally
closed contacts open. If one coil, (Coil A)
is de-energized, then the contacts on the
opposite side (Coil B) will not transition until
coil power is restored to the first coil (A).
Easy DIN Rail or
Flange Mounting
General Specifications
(UL 508)
Contact Characteristics
Number and type of Contacts
Contact materials
Thermal (Carrying) Current
Maximum Switching Voltage
Switching Current @ Voltage
Units
~
~
~
Minimum Switching Requirement
Coil Characteristics
Voltage Range
~
Drop-out voltage threshold
~
Performance Characteristics
Electrical Life (UL508)
Mechanical Life
Operating time (response time)
Dielectric strength
Operations @ Rated Current
Unpowered
Between coil and contact
Between poles
Between contacts
SECTION 7
Environment
Product certifications
Ambient air temperature
around the device
Vibration resistance
Shock resistance
Degree of protection
Weight
A
B
7
ms
V(rms)
V(rms)
V(rms)
COIL B
6PDT
DC COIL
UL
-40…+85
-40…+55
3, 10 - 55 Hz
10
IP 40
85
COIL B
DPDT
AC COIL
9
7
9
8
7
5
6
4
6
5
4
2
3
1
3
2
1
2
1
3
1
2
3
5
4
6
4
5
6
7
9
7
8
9
A
B
A
B
100,000
10,000,000
25
2000
1500
1500
°C
°C
g-n
g-n
B
COIL A
7/20
~
~
~
A
A
(Resistive)
grams
4PDT
DC COIL
7
12….240, 50/60 Hz
12….125
85% to 110%
80% to 110%
2
1.64
15%
10%
VA
W
Standard version
Storage
Operation
Operational
DPDT
DC COIL
COIL B
V
V
~
% of Nominal
Average consumption
B
A
V
Resistive
Resistive
HP
HP
mA
~
Operating Range
385
DPDT, 4PDT, 6PDT
Silver Alloy
15
600
15A @ 240V 50/60Hz
10A @ 28V
1/3 @ 120 VAC
1/2 @ 208 VAC to 600 VAC
100 @ 5 VDC (.5W)
COIL A
A
B
COIL A
B
COIL B
4PDT
AC COIL
COIL B
6PDT
AC COIL
A
B
COIL B
A
9
7
9
8
7
5
6
4
6
5
4
2
3
1
3
2
1
2
1
3
1
2
3
5
4
6
4
5
6
7
9
7
8
9
A
B
A
A
B
7
7
A
B
COIL A
COIL A
B
COIL A
Magnecraft Solution Guide 105A
www.magnecraft.com
847-441-2540
BOLD-FACED PART NUMBERS ARE NORMALLY STOCKED
Standard Part Numbers
Nominal Voltage
Coil Resistance
AC Operated (Single Coil)
12 VAC 50/60 HZ
24 VAC 50/60 HZ
120 VAC 50/60 HZ
240 VAC 50/60 HZ
Part Number
DPDT
Part Number
4PDT
Part Number
6PDT
30/30 Ohms
180/180 Ohms
3,800/3,800 Ohms
16,000/16,000 Ohms
385XBX-12A
385XBX-24A
385XBX-120A
385XBX-240A
385XDX-12A
385XDX-24A
385XDX-120A
385XDX-240A
385XFX-12A
385XFX-24A
385XFX-120A
385XFX-240A
DC Operated
12 VDC
24 VDC
48 VDC
110-125 VDC
85/85 Ohms
340/340 Ohms
1,360/1,360 Ohms
9,000/9,000 Ohms
385XBX-12D
385XBX-24D
385XBX-48D
385XBX-110/125D
385XDX-12D
385XDX-24D
385XDX-48D
385XDX-110/125D
385XFX-12D
385XFX-24D
385XFX-48D
385XFX-110/125D
Part Number Builder
F
Temperature Class
130° C = None
155° C = F
385
Series
385
XBX
Contact Configuration
DPDT = XBX
4PDT = XDX
6PDT = XFX
240A
Coil Voltage
VAC = 6 - 240A
VDC = 6 - 125D
–
0.187 QUICK
CONNECTS
4
9
8
6
5
3
2
2
7
1
1.67
(42.42)
1
3
4
5
6
7
8
9
B
SECTION 7
B
Magnecraft Solution Guide 105A
3.04
(77.22)
A
A
2.7
(69.01)
1.49
(37.85)
A
2.39
(60.8)
1.36
(33.02)
B
1.38
(34.9)
7/21
Section
7
Cross Reference Guide
Magnecraft
Midtex
Potter & Brumfield
711XBXC-12D
711XBXC-24D
711XBXC-48D
711XBXC-110D
619-11B200
619-11C200
619-11D200
619-11F200
KUR-11D15-12
KUR-11D15-24
KUR-11D15-48
KUR-11D15-110
Magnecraft
ATC Diversified
Time Mark
SSAC
712XAXC
712XBXC
712XBXCK
712XBXCK1
ARA120ABA
261ST-120
261DXT-120
ARP41S
ARP43S
ARP42S
Magnecraft
Supercedes Magnecraft
Idec
Releco
755XBXC-24A
755XBXC-120A
755XBXC-240A
755XBXCD-12D
755XBXCD-24D
755XBXCD-110D
W250AML2CPX-8
W250AML2CPX-9
W250AML2CPX-10
W250ML2CPX-6
W250ML2CPX-7
W250ML2CPX-8
RR2KP-U-AC24
RR2KP-U-AC120
RR2KP-U-AC240
RR2KP-U-DC12
RR2KP-U-DC24
RR2KP-U-DC110
C3-R20/AC24V
C3-R20/AC120V
C3-R20/AC240V
Magnecraft
Supercedes Magnecraft
Potter & Brumfield
Releco
785XBXC-120A
785XBXC-240A
785XBXC-12D
785XBXC-24D
785XBXCD-12D
785XBXCD-24D
785XBXCD-110D
285XBXC-120A / 388AMLCPX-9
285XBXC-240A / 388AMLCPX-10
285XBXC-12D / 388MLCPX-6
285XBXC-24D / 388MLCPX-7
285XBXCD-12D / 388ML2CPX-6
285XBXCD-24D / 388ML2CPX-7
285XBXCD-110D / 388ML2CPX-8
KUL11A15S-120
KUL11A15S-240
KUL11D15S-12
KUL11D15S-24
KUL11D15D-12
KUL11D15D-24
KUL11D15D-110
C5-R20/AC120V
C5-R20/AC240V
C5-R20/DC12V
C5-R20/DC24V
Magnecraft
Potter & Brumfield
385XDX-120A
385XDX-12D
385XDX-24D
KB-17AG-120 or KUB-17A15-120
KB-17DG-12 or KUB-17D15-12
KB-17DG-24 or KUB-17D15-24
261DT-120
SECTION 7
ARA120ADA
7/22
www.magnecraft.com
847-441-2540
Magnecraft Solution Guide 105A
Deltrol
R50-11A10-120
R50-11A10-240
R50-11D10-12
R50-11D10-24
R50-11D10-12C
R50-11D10-24C
R50-11D10-110C
20525-84
20525-85
20531-81
20531-82
20537-81
20537-82
20537-84
SECTION 7
NTE
www.magnecraft.com
Magnecraft Solution Guide 105A
847-441-2540
7/23
www.magnecraft.com
847-441-2540
SECTION 7
NOTES:
7/24
Magnecraft Solution Guide 105A