Solid State Relays System Monitoring Relays (Sense Relay) Type RA.......S System (line and load) monitoring relay Zero switching Rated operational current: 25, 50 and 110 AACrms Rated operational voltage: 120, 230, 400 and 480 VACrms High surge current capability Alarm output signal LED indication for alarm and supply Product Description Ordering Key RA 23 25 H 06 NO S The system monitoring solid The relay is designed for Solid State Relay state relay (sense relay) pro- applications where immediate Switching mode vides an alarm output in the fault detection is required. A Rated operational voltage event of a circuit failure. Inter- red LED indicates an alarm, a Rated operational current nal circuits monitor: green LED indicates DC con- Control input - line voltage/line current trol supply OK (half LED light Blocking voltage - correct functioning of the intensity) resp. relay switched Alarm output type SSR ON (full LED light intensity). Sense SSR - SSR input status Type Selection Switching mode Rated operational Rated operational Control Blocking Alarm output voltage current input voltage voltage A: Zero switching 40: 400 VACrms 25: 25 AACrms H: Active high 06: 650 Vp NO: NPN, NO 23: 230 VACrms 50: 50 AACrms 10: 1000 Vp NC: NPN, NC 40: 400 VACrms 110: 110 AACrms 12: 1200 Vp PO: PNP, NO 48: 480 VACrms PC: PNP, NC Selection Guide Rated Control Alarm Rated operational current op. input output voltage type 25 AACrms 50 AACrms 110 AACrms 120 VACrms Active high NPN, NO RA 1225 H06NOS RA 1250 H06NOS RA 12110 H06NOS NPN, NC RA 1225 H06NCS RA 1250 H06NCS RA 12110 H06NCS PNP, NO RA 1225 H06POS RA 1250 H06POS RA 12110 H06POS PNP, NC RA 1225 H06PCS RA 1250 H06PCS RA 12110 H06PCS 230 VACrms Active high NPN, NO RA 2325 H06NOS RA 2350 H06NOS RA 23110 H06NOS NPN, NC RA 2325 H06NCS RA 2350 H06NCS RA 23110 H06NCS PNP, NO RA 2325 H06POS RA 2350 H06POS RA 23110 H06POS PNP, NC RA 2325 H06PCS RA 2350 H06PCS RA 23110 H06PCS 400 VACrms Active high NPN, NO RA 4025 H10NOS RA 4050 H10NOS RA 40110 H10NOS NPN, NC RA 4025 H10NCS RA 4050 H10NCS RA 40110 H10NCS PNP, NO RA 4025 H10POS RA 4050 H10POS RA 40110 H10POS PNP, NC RA 4025 H10PCS RA 4050 H10PCS RA 40110 H10PCS 480 VACrms Active high NPN, NO RA 4825 H12NOS RA 4850 H12NOS RA 48110 H12NOS NPN, NC RA 4825 H12NCS RA 4850 H12NCS RA 48110 H12NCS PNP, NO RA 4825 H12POS RA 4850 H12POS RA 48110 H12POS PNP, NC RA 4825 H12PCS RA 4850 H12PCS RA 48110 H12PCS Specifications are subject to change without notice (28.09.2021) 1 RA.......S General Specifications RA12...06..S RA23...06..S RA40...10..S RA48...12..S Operational voltage range 60 to 140 VACrms 170 to 250 VACrms 150 to 440 VACrms 180 to 530 VAC Blocking voltage 650 Vp 650 Vp 1000 Vp 1200 Vp Zero voltage turn-on 15 V 15 V 15 V 15 V Operational frequency range 45 to 65 Hz 45 to 65 Hz 45 to 65 Hz 45 to 65 Hz Power factor cos 0.5 120 VACrms 0.5 230 VACrms 0.5 400 VACrms 0.5 480 VACrms CE marking Yes Yes Yes Yes Compliance UR, CSA, EAC UR, CSA, EAC UR, CSA, EAC UR, CSA, EAC Control Specifications Alarm Specifications Supply voltage range 20 to 32 VDC PNP Alarm output NO No alarm condition 0 VDC Supply current 24 VDC 40 mADC Alarm voltage 100 mA Vcc - 2 VDC Response time pick-up 50 Hz 10 ms Max. alarm output current 100 mA Response time drop-out 50 Hz 10 ms PNP Alarm output NC Active high control input No alarm condition Vcc - 2 VDC Pick-up voltage Typ. 7 VDC Alarm voltage 100 mA 0 VDC Drop-out voltage Typ. 6.8 VDC Max. alarm output current 100 mA Input current (Vc = 32 V) 4 mA NPN Alarm output NO No alarm condition 32 VDC Alarm voltage 100 mA 2 VDC Max. alarm output current 100 mA NPN Alarm output NC No alarm condition 2 VDC Alarm voltage 100 mA 32 VDC Max. alarm output current 100 mA Output Specifications RA..25.06..S RA..50.06..S RA..110.12..S Rated operational current AC 51 25 Arms 50 Arms 110 Arms AC 53a 5 Arms 15 Arms 30 Arms Min. operational load current 200 mA 250 mA 500 mA Non-rep. surge current t=10 ms 325 Ap 600 Ap 1900 Ap Off-state leakage current rated voltage and frequency 6 mA 6 mA 6 mA 2 2 2 2 I t for fusing t=10 ms 525 A s 1800 A s 18000 A s Critical dv/dt 500 V/s 500 V/s 500 V/s Sense Specifications RA12...06..S RA23...06..S RA40...10..S RA48...12..S Current Sensed load current 50 mA 50 mA 50 mA 50 mA Non-sensed leakage current 20 mA 20 mA 20 mA 20 mA Voltage Sensed line voltage 60 Vrms 120 Vrms 150 Vrms 180 Vrms Non-sensed line voltage 30 Vrms 50 Vrms 80 Vrms 100 Vrms Timing Response time from fault to alarm output 100 ms 100 ms 100 ms 100 ms Short-circuit of semiconductor Will be sensed Will be sensed Will be sensed Will be sensed 2 Specifications are subject to change without notice (28.09.2021)