SIEMENS 3RU2116-1HC1 SIRIUS THERMAL OVERLOAD RELAY

Siemens 3RU2116-1HC1 is a Class10 thermal overload relay from the SIRIUS 3RU2 series, with adjustable current range 5.5A ~ 8.0A, equipped with 1NO+1NC auxiliary contacts. This motor overload protection relay provides inverse-time thermal overload protection for three-phase motors, protecting motor windings from overheating damage caused by continuous overload and phase loss fault. It supports both manual and automatic reset modes, built-in test function and trip status indicator, spring type terminal design with IP20 protection grade. It complies with IEC60947 standards, widely used with Siemens SIRIUS contactors for pump, fan and auxiliary motor control panels in industrial and marine low voltage systems.

This unit is a vital industrial motor control spare part for motor control cabinet overhaul. The motor overload spare part monitors motor load current continuously and cuts off motor control circuit automatically when overload occurs. The motor overload spare part detects phase failure condition to prevent single-phase motor burning. The motor overload spare part can replace faulty relay to restore motor overload and phase loss protection function.

It delivers reliable motor thermal overload & phase failure protective control for industrial power distribution systems. The motor thermal overload & phase failure protective control uses bimetallic thermal element to detect motor overheating. The motor thermal overload & phase failure protective control tolerates motor starting inrush current without unwanted tripping. The motor thermal overload & phase failure protective control sends trip signal to contactor coil to isolate power supply during overload fault.

3RU2116-1HC1 relay is mounted on contactor or DIN rail inside MCC cabinet. It is original Siemens spare part for industrial motor control system maintenance.