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Technical Specifications

Supervises important control circuits: circuit-breakers, disconnectors, and signalling circuits

One relay per circuit; multiple relays can supervise branched circuits

Designed for COMBIFLEX system

Supply voltage range: 40–265 V DC

Continuous monitoring to prevent undetected faults

Preset operate time avoids unwanted alarms during circuit-breaker operation

LED indicator on the front panel shows relay operation

Detects bad contact, contact welding, and auxiliary voltage failures

For rail- or surface-mounted options, see SPER 1B1 C4

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All products Electrical Products & Equipment Protection Relay Power Meter Soft Starter Circuit Breaker Inverter and Drive Electric Motor