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Electrical Time Switches, Timers & Control Relays

ABB CM-PSS.31S THREE-PHASE MONITORING RELAY MEASURING (L-L) 342-418VAC CONTROL 380VAC 2CO

Product Code: CM-PSS.31S

The three-phase monitoring relay is designed to monitor various phase parameters including phase failure, phase sequence over/undervoltage, and phase unbalance. It has a measuring range of 342 to 418 V AC (L-L) and operates with a rated control supply voltage of 380 V AC. The relay is equipped with 2 CO (SPDT) outputs and features an adjustable tripping delay ranging from instantaneous to 30 s (0, 0.1-30 s). Additionally, it is designed with double-chamber cage connection terminals for easy installation.

Technical Specifications

Brand ABB
Contacts 2CO (SPDT)
Degree of Protection IP50 (Housing), IP20 (Terminals)
Duty Time 100%
Measuring Range AC (V) Overvoltage: 3 x 418, Undervoltage: 3 x 342
Mounting Type DIN Rail
Operational Temperature Range (°C) -25 to +60
Overvoltage Category III
Pollution Degree 3
Rated Control Supply Voltage AC (V) 3 x 380
Rated Frequency (Hz) 50/60
Rated Impulse Withstand Voltage (kV) 6/4
Terminal Type Screw
Timing Range Start-up delay: 200ms, Tripping delay: 0s or 0.1-30s (ON or OFF)

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