645RT Series - Solid State Reversing
10 - 40 Amp
E52197
The 645RT series of solid state relays uses triacs for reversing phases on three phase loads. The
most typical use is motor reversing. Inputs are DC operated. Load currents can range from 10 to 40
amps and up to a nominal voltage of 480VAC. Both random turn on or zero cross is available.
GENERAL SPECIFICATIONS (@ 25° C)
Input Characteristics
Input Voltage
Must Release Voltage
Maximum Input Current
Reverse Polarity Protection
Output Characteristics
Min. Load current to maintain on
Non-Repetitive Surge Current (1 cycle)
Maximum I2T for Fusing (Asquared sec)
Suggested Heatsink °C/W
Load Voltage Range
Frequency Range
Peak Blocking Voltage
Maximum Rate of Rise Off State Voltage (dv/dt)
Max. Off state leakage current (rms)
Max. On State Voltage Drop
Maximum Turn-On Time @ 60 Hz
Maximum Turn-Off Time @ 60 Hz
Miscellaneous Characteristics
Dielectric Strength - I or O to case
Operating Temperature Range
Storage Temperature Range
Weight
Input Terminal Size
Output Terminal Size
4000Vrms
-30 to 80°C
-40 to 100°C
320g
M3.5
M4
10 Amp
100mA
100A
50A2 S
0.5°C/W
50 to 480VAC
47 to 63 Hz
800 to 1200
250V/uS
10mA
1.6VAC
8.3mS
8.3mS
DC Input
4 - 32VDC
1VDC / 8VDC
80mA
Yes
25 Amp
120mA
250A
312A2 S
0.14°C/W
50 to 480VAC
47 to 63 Hz
800 to 1200
250V/uS
10mA
1.6VAC
8.3mS
8.3mS
40 Amp
250mA
300A
450A2 S
0.14°C/W+FAN
50 to 480VAC
47 to 63 Hz
800 to 1200
250V/uS
10mA
1.6VAC
8.3mS
8.3mS
3/17
www .struthers-dunn.com
(843) 664-3303
Motor Relays
15 - 75 Amp
Outline Dimensions
Foward / Reverse Motor Control
Wire Diagram
L1
L2
L3
440VAC
F1
F2
Motor
3
R1
1
2
R2
3
4
.02
(.5)
1.12
(28.3)
2.94 2.30 1.88
(74.6) (58.4) (47.7)
.21
(5.3)
4.14
(105.1)
.78
(19.9)
1.10
(27.9)
.94
(23.7)
3.73
(94.0)
-
+
F
+
-
R
Derating Curve
45
40
Load current (Amps)
Ordering Code
Series
645
Switching
Triac - CODE T
645
T
Z or R
4
10
4-32VDC
35
30
25
20
15
10
Turn on
Zero cross - CODE Z
Random turn on - R
Load Voltage
480VAC - CODE 4
Maximum Load Current
10, 25, 40 (Amp)
Input Voltage
4-32VDC
0
10
20
30
40
50
60
70
80
Maximum ambient temperature (°C)
www.struthers-dunn.com
(843) 664-3303
3/18
Section 3
Dimensions Shown in inches & (millimeters)