The 3RN1011-1CC00 is a phased-out product. The preferred successor is the 3RN2011-1BA30 thermistor motor protection evaluation unit with manual reset, 1 NO + 1 NC, 24 V AC, screw terminals.
What It Is & Key Ratings
This is a Siemens SIRIUS 3RN1 thermistor motor protection evaluation unit. It monitors PTC thermistor sensors in motor windings and trips the 1 NO + 1 NC auxiliary contact pair when the winding temperature exceeds the sensor threshold. The reclosing lockout function prevents automatic restart after a trip — useful for applications where manual reset is required for safety.
Integration Notes
Screw-type terminals for the auxiliary and control circuit. The 1 NC contact is typically wired in series with the motor contactor coil; the 1 NO can signal a PLC or alarm. The 22.5 mm housing fits standard 35 mm DIN rail alongside other SIRIUS control gear. Depth of 91 mm leaves clearance for wiring ducts.