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Technical Specifications

Supervises critical control circuits: circuit-breaker, disconnector, and signalling circuits

One relay per circuit; multiple relays can supervise circuit branches

Designed for the COMBIFLEX system

Supply voltage range: 20–60 V DC

Continuous monitoring to prevent undetected faults

Preset operate time prevents unwanted alarms during circuit-breaker operation

LED indicator on front panel with output relay for operation indication

Detects bad contact, contact welding, and auxiliary voltage failures

For rail- or surface-mounted version, refer to 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