Single Phase Solid State Relays
POWERSEM reserves the right to change limits, test conditions and dimensions -
info@POWERSEM.net
- www.POWERSEM.net
POWERSEM 2005 All rights reserved
HIGHLIGHTS Series: 20 SJ/K
• INPUT: AC CONTROL
• OUTPUT: DIRECT COPPER BONDED BACK-TO-
BACK SCR
• OPTO ISOLATION 2500 VAC (4000 V optional)
• ZERO VOLTAGE TURN-ON or RANDOM TURN-ON
• HIGH DV/DT
• SAFETY COVER (optional)
• REVERSE VOLTAGE PROTECTION FOR DC/AC
RELAYS
• CHASSIS MOUNTABLE
• LED INDICATOR SHOWING RELAY ‘ON’ STATUS
• Weight = 106 g
(J: Zero voltage turn-on; K: Random turn-on)
125 – 205 A
ELECTRICAL SPECIFICATIONS
Parameter Symbol
Type Unit
PSB 20 A
1212528
PSB 20 A
1215028
PSB 20 A
1217528
PSB 20 A
1220528
AC CONTROL
Control voltage range 90-280 90-280 90-280 90-280 Vac
Control current range 4-10 4-10 4-10 4-10 mA
Pick-up voltage 90 90 90 90 Vac
Drop out voltage 10 10 10 10 Vac
Input impedance 25
25
20-26 20-26 20-26 K Ohms
OUTPUT
Main voltage range V
RMS
48-660 48-660 48-660 48-660 Vac
Repetitive peak off state voltage V
DRM
1200/1600
1200/1600
1200/1600
1200/1600
Vpk
RMS on-state current I
T
125 150 175 205 A
Zero turn-on voltage 35 35 35 35 Vac
Off-state leakage current @ rated voltage I
DRM
1 1 1 1 mA
Peak one cycle surge current (non-rep) I
TSM
1250 1350 1500 2250 A
Holding current I
H
250 250 250 250 mA
Critical rate of rise of off-state voltage dv/dt
1000 1000 1000 1000 V/µs
Thermal resistance (junction to case) R
thjc
0.35 0.35 0.25 0.1 K/W
Frequency range f 47-63 47-63 47-63 47-63 Hz
Operating temperature
-25 to +80 -25 to +80 -25 to +80 -25 to +80 °C
Turn-on time T-on 40 40 40 40 ms
Turn-off time T-off 80 80 80 80 ms
Fusing current @ 25°C (8.3ms) I
2
t 5000 8000 15000 25000 A
2
s
released, E 197669
http://store.iiic.cc/
Single Phase Solid State Relays
POWERSEM reserves the right to change limits, test conditions and dimensions - info@POWERSEM.net - www.POWERSEM.net
POWERSEM 2007 All rights reserved
MECHANICAL SPECIFICATIONS
Dimensions in mm
10 20 30 40 50 60 70 80 90
220
200
180
160
140
120
100
80
60
40
20
C
U
R
R
E
N
T
i
n
A
M
P
S
AMBIENT TEMPERATURE IN C
HEAT SINK USED:
FAN USED: 100 CFM FOR 205 A
0,1 K/W
10 20 30 40 50 60 70 80 90 100
200
180
160
140
120
100
80
60
40
20
C
U
R
R
E
N
T
i
n
A
M
P
S
AMBIENT TEMPERATURE IN C
W
ITH FAN
W
ITHOUT FAN
HEAT SINK USED:
FAN USED: 70 CFM FOR 125 A
FAN USED: 100 CFM FOR 150 A - 175 A
VALID FOR SERIES: PSB 20 SJK ( 125 A - 175 A )
0,14 K/W
http://store.iiic.cc/