Functional Description

The ABB SS822 3BSC610042R1 is a Power Voting Unit specifically designed as a control unit within a redundant power supply configuration. Operating as a centralized table supervisor, the module keeps dual power inputs fully isolated from one another while continuously tracking input integrity. The unit features dual 24V DC 20A inputs and a single 24V DC 20A output, with each power input supervised. It ensures continuous power delivery to critical industrial control systems such as PLCs, DCS, and servo drives in the event of a main power supply failure.

(1) Nominal Input Voltage: 24V DC nominal

(2) Maximum Output Voltage: 35V DC absolute safety limit

(3) Maximum Continuous Input Current: 2 x 20A dual circuit supervision paths

(4) Rated Output Current Allocation: 20A continuous output capacity

(5) Operating Temperature Range: 0°C to 55°C (32°F to 131°F) when mounted on standard horizontal DIN rails

Applications by Industry

v Redundant Process Power Distribution: Installed in mission-critical manufacturing platforms to couple two parallel SD821, SD822, or SD823 supplies into a non-stop redundant configuration.

v Fault-Tolerant DCS Core Protection: Deployed directly alongside AC 800M controller nodes to prevent sudden input breaker trips from triggering catastrophic plant trips.

v Remote Power Diagnostic Monitoring: Utilizes its dry relay OK contacts to map power supply failure signals to external digital input cards for central control room alarms.

Main Brands

We have large of inventory for our company's advantage products.

BENTLY EPRO ALL SERIES OF PRODUCTS SPAR PARTS PROBE Proximitor

PLC: AB, ABB, GE, Schneider

DCS: ABB, Siemens, MOORE, Foxboro, Westinghouse, YOKOGAWA

ESD: Triconex, HIMA, BENTLY, ICS

Excitation cards: ABB, GE Marke

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