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Technical Specifications
Continuous monitoring of trip circuits and other essential control circuits
One relay per circuit; multiple relays can supervise branched circuits
Standard 11-pin plug-in unit with corresponding terminal socket for rail mounting
Preset operate time to prevent unwanted alarms during circuit-breaker operation
LED indicator on front panel shows relay operation
Detects bad contacts, contact welding, and auxiliary voltage failures
Available in COMBIFLEX design (see SPER 1C1 and SPER 1C2)
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