Series E3PT
Three-Phase Output to 50A 520 Vac
Touch-Proof DC Control
Part Number
Description
E3PT48D50
50A*, 520 Vac
E3PT48D50H
50A*, 520 Vac
For RoHS Compliant Contact Factory
Part Number Explanation
E3PT
48
Series
Line Voltage1
D
50
H
High Surge3
Switch Type2
Output Current – Amps
FEATURES/BENEFITS
• Designed for all types of loads
• Tight zero-cross window
• Control LED on all models
• Internal output transient protection
• Touch-proof
NOTES
1) Line Voltage (nominal) 48 = 480 Vac
2) Switch Type: D = Zero-cross turn-on
3) H: High surge capability
*Current limited to 50A due to terminals
MECHANICAL SPECIFICATION
M3.5
2.3 (58.4)
M4
2.99 (76)
.75
(19)
1.57 (40)
.75
(19)
.91 (23)
.17 (4.4)
3.26 (82.7)
3.58 (91)
DESCRIPTION
The Series E3PT three-phase solid-state relays are
designed for all types of loads. The E3PT relays
include as a standard a control LED for visual status.
The E3PT series is touch-proof for user safety. An
internal MOV and snubber circuit protect the output
thyristor. The E3PT relays are highly immune to large
current surges. The tight zero-cross window provides
a low EMI level. The E3PT relays are an excellent
choice for three-phase applications.
APPLICATIONS
• Heating control
• Motor control
• Three-phase industrial and process control
2.22 (56.5)
3.94 (100)
APPROVALS
Series E3PT relays are pending UL recognition.
TYPICAL APPLICATION
WEIGHT: 14.46 oz. (410g)
R
S
T
R
S
T
R
S
T
Figure 1 — E3PT relays; dimensions in inches (mm)
Resistive or
inductive load
M
Figure 2 — E3PT typical application
© 2014 TELEDYNE RELAYS
(800) 284-7007 • www.teledynerelays.com
E3PT Page 1
E3PT\072014\Q3
Series E3PT
Three-Phase Output to 50A 520 Vac
Touch-Proof DC Control
INPUT (CONTROL) SPECIFICATION
Input Type
Control Range
Input Current Range
OUTPUT (LOAD) SPECIFICATION (continued)
Min
Max
Units
8.5
30
Vdc
10
Must Turn-Off Voltage
Input Resistance (Typical)
45
mA
4
Vdc
620
Reverse Voltage Protection
Min
Max
Units
E3PT48X50
5,000
A²s
E3PT48X50H
20,000
A²s
I²T for Match Fusing (<8.3ms)
Environmental Specification
Operating Temperature
-40
100
°C
Storage Temperature
-40
100
°C
Input-Output Isolation
4000
Vrms
Output-Case Isolation
3300
Vrms
Ohms
30
V
OUTPUT (LOAD) SPECIFICATION
Operating Range
Min
Max
24
520
Vrms
1200
Vpeak
Peak Voltage
Units
NOTES
1) *Current limited to 50A due to terminals
2) Electrical Specifications at 25°C unless otherwise specified
CONTROL CHARACTERISTIC
Load Current Range (See Note 1)
.005
50*
A
E3PT48D50H
.005
50*
A
Maximum Surge Current Rating (Non-Repetitive)
E3PT48X50
1000
A
E3PT48X50H
2000
A
On-State Voltage Drop
1.4
V
50
Input Current (mA)
E3PT48D50
40
30
20
10
0
0
Zero-Cross Window (Typical)
±12
V
5
mA
Turn-On Time
8.3
ms
Turn-Off Time
8.3
ms
Off-State Leakage Current (60 Hz)
2
4
6
8 10 12 14 16 18 20 22 24 26 28 30
Control Voltage (V)
Figure 4a — E3PT48D
EQUIVALENT CIRCUIT
L1/R
7+
Adapter
U
Off-State dv/dt
500
V/ųs
L2/S
LED
Maximum di/dt (Non-Repetitive)
50
Adapter
A/ųs
V
L3/T
Operating Frequency
10
440
Hz
Adapter
8–
W
Figure 3b — E3PT48D
E3PT Page 2
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
© 2014 TELEDYNE RELAYS
E3PT\072014\Q3
Series E3PT
Three-Phase Output to 50A 520 Vac
Touch-Proof DC Control
THERMAL CHARACTERISTICS
SURGE CURRENTS
1500
300
280
240
Full on-state
0.3qC/W
220
Power Dissipation (W)
Apeak
260
1000
Non-Repetitive
500
200
Repetitive with initial Tj = 70oC
180
0
0.55qC/W
160
0.01
0.1
140
120
1
10
Figure 6b — E3PT48X50
0.95qC/W
100
t (s)
80
60
1.2qC/W
2000
Non-Repetitive
40
Without Heat Sink
1500
0
0
10
20
30
40
50
60
70
80
0
10 20
30 40 50 60 70
80 90 100
Ambient Temperature ( o C)
Load Current (A)
Apeak
20
1000
500
Figure 5b — E3PT48X50
Repetitive with initial Tj = 70oC
0
0.01
0.1
t (s)
1
10
140
0.5qC/W
0.55qC/W
0.3qC/W
Figure 6c — E3PT48X50H
120
Power Dissipation (W)
Full on-state
100
0.9qC/W
80
60
1.2qC/W
40
Without Heat Sink
20
0
0
5
10 15 20 25 30 35 40 45 50
Load Current (A)
0
10 20
30 40 50 60 70
80 90 100
Ambient Temperature ( o C)
Figure 5c — E3PT48X50H
© 2014 TELEDYNE RELAYS
(800) 284-7007 • www.teledynerelays.com
E3PT Page 3
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