Series E3PT
Three-Phase Output to 50A 520 Vac
Touch-Proof, AC or DC Control
Part Number
E3PT48D12
E3PT48A12
E3PT48D50
E3PT48A50
E3PT48D50H
E3PT48A50H
Description
12A, 520 Vac
12A, 520 Vac
50A*, 520 Vac
50A*, 520 Vac
50A*, 520 Vac
50A*, 520 Vac
E3PT
48
D
50
H
NOTES
1) Line Voltage (nominal): 48 = 480 Vac
2) Switch Type: D = Zero-cross turn-on
A = AC control, Zero-cross turn-on
3) H = High surge capability
*Current limited to 50A due to terminals
FEATURES/BENEFITS
• Designed for all types of loads
• Tight zero-cross window
• Control LED on all models
• Internal output transient protection
• Touch-proof
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
APPROVALS
Series E3PT relays are pending UL recognition.
MECHANICAL SPECIFICATION
3.26 (82.7)
M4
.17 (4.4)
.75
(19)
.75
(19)
1.57 (40)
2.3 (58.4)
M3.5
.91 (23)
3.58 (91)
3.94 (100)
2.22 (56.5)
2.99 (76)
TYPICAL APPLICATION
R
S
T
R
S
T
R
S
T
WEIGHT: 14.46 oz. (410g)
Figure 1 — E3PT relays; dimensions in inches (mm)
Resistive or
inductive load
M
Figure 2 — E3PT typical application
© 2003 TELEDYNE RELAYS
(800) 284-7007 • www.teledynerelays.com
E3PT 1
E3PT\032003\Q1
Series E3PT
INPUT (CONTROL) SPECIFICATION
Input Type
Control Range
E3PT48
A
90
240
Vac
Input Current (mA)
CONTROL CHARACTERISTIC
Units
Vdc
50
Min
8.5
Max
30
E3PT48
D
40
30
Input Current Range
E3PT48
E3PT48
D
A
10
4
45
11
mA
mA
20
10
0
Must Turn-off Voltage
E3PT48
E3PT48
D
A
4
15
Vdc
Vac
12
0
2
4
6
8 10 12 14 16 18 20 22 24 26 28 30
Control Voltage (V)
Figure 4a — E3PT48D
Input Resistance (Typical)
Input Current (mA)
E3PT48
E3PT48
D
A
620
21
Ohms
KOhms
9
6
Reverse Voltage Protection
E3PT48
D
30
V
3
0
0
20 40
60
80 100 120 140 160 180 200 220 240
Control Voltage (V)
Figure 4b — E3PT48A
EQUIVALENT CIRCUIT
L1/R
L1/R
Adapter
LED
A1
=
7+
Adapter
U
L2/S
U
L2/S
Adapter
A2
V
L3/T
Adapter
LED
Adapter
V
L3/T
8–
W
Adapter
W
Figure 3a — E3PT48A
Figure 3b — E3PT48D
E3PT 2
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
© 2003 TELEDYNE RELAYS
E3PT\032003\Q1
Series E3PT
OUTPUT (LOAD) SPECIFICATION
Min
Operating Range
All relays
Peak Voltage
All relays
Load Current Range (See Note 1)
E3PT48D12
E3PT48A12
E3PT48D50
E3PT48A50
E3PT48D50H
E3PT48A50H
.005
.005
.005
.005
.005
.005
12
12
50*
50*
50*
50*
A
A
A
A
A
A
Operating Temperature
All relays
Storage Temperature
A
A
A
Input-Output Isolation
All relays
On-State Voltage Drop
All relays
Zero-Cross Window (Typical)
All relays
Off-State Leakage Current (60Hz)
All relays
Turn-On Time
E3PT48
E3PT48
Turn-Off Time
E3PT48
E3PT48
Off-State dv/dt
All relays
Maximum di/dt (Non-Repetitive)
All relays
50
A/µs
500
V/µs
D
A
8.3
25
ms
ms
D
A
8.3
25
ms
ms
5
mA
±12
V
NOTES:
1. *Current limited to 50A due to terminals.
2. Electrical specifications at 25°C unless otherwise specified.
OUTPUT (LOAD) SPECIFICATION (Continued)
Unit
Operating Frequency
Vrms
All relays
I
2
t for Match Fusing (<8.3ms)
Min
10
Max
440
Unit
Hz
Max
520
24
1200
Vpeak
E3PT48X12
E3PT48X50
E3PT48X50H
72
5000
20,000
A
2
s
A
2
s
A
2
s
ENVIRONMENTAL SPECIFICATION
Min
-40
Max
100
Unit
°C
Maximum Surge Current Rating (Non-Repetitive)
E3PT48X12
E3PT48X50
E3PT48X50H
120
1000
2000
All relays
–40
100
°C
4000
Vrms
1.4
V
Output-Case Isolation
E3PT48X12
All other relays
2500
3300
Vrms
Vrms
© 2003 TELEDYNE RELAYS
(800) 284-7007 • www.teledynerelays.com
E3PT 3
E3PT\032003\Q1
Series E3PT
THERMAL CHARACTERISTICS
60
o
0.95 C/W
SURGE CURRENTS
150
Non-Repetitive
100
50
1.2
o
C/W
Power Dissipation (W)
Apeak
40
Full on-state
30
50
Repetitive with initial Tj = 70
o
C
0
3
o
C/W
0.01
0.1
t (s)
1
10
20
Figure 6a — E3PT48X12
Without Heat Sink
1500
10
0
Apeak
0
2
4
6
8
10
12
0
10 20 30 40 50 60 70 80 90 100
1000
Non-Repetitive
Load Current (A)
Ambient Temperature ( C)
o
500
Repetitive with initial Tj = 70
o
C
Figure 5a — E3PT48X12
0
0.01
0.1
300
280
260
240
220
Full on-state
0.3°C/W
t (s)
1
10
Figure 6b — E3PT48X50
2000
1500
0.55°C/W
Non-Repetitive
Power Dissipation (W)
200
180
160
140
120
100
80
60
40
20
0
0
10
20
30
40
50
60
70
80
0
10 20
30 40 50 60 70
80 90 100
Without Heat Sink
1.2°C/W
0.95°C/W
Apeak
1000
500
0
0.01
0.1
Repetitive with initial Tj = 70
o
C
t (s)
1
10
Figure 6c — E3PT48X50H
Load Current (A)
Ambient Temperature (
o
C)
Figure 5b — E3PT48X50
140
0.5°C/W
120
Full on-state
0.55°C/W
0.3°C/W
Power Dissipation (W)
100
0.9°C/W
80
60
1.2°C/W
40
20
Without Heat Sink
0
0
5
10 15 20 25 30 35 40 45 50
0
10 20
30 40 50 60 70
80 90 100
Load Current (A)
Ambient Temperature (
o
C)
Figure 5c — E3PT48X50H
E3PT 4
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
© 2003 TELEDYNE RELAYS
E3PT\032003\Q1
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