Siemens SCB-C12 Combination Motor Starter Contactor

The Siemens SCB-C12 combination motor starter consolidates a contactor and an adjustable thermal overload relay into a single, panel-mount or DIN-rail compatible assembly, designed to coordinate motor starting, stopping, and overload protection for 3-phase motors in automation systems, HVAC equipment, pumps, conveyors, and other industrial machinery. With a 120 VAC coil voltage and support for 3-phase motor voltages of 120/240 V (system dependent), this Size 1 unit handles industrial motor loads up to approximately 27 A class, depending on configuration, providing reliable switching and integrated protection in motor control panels and OEM control enclosures. The overload protection is provided by an adjustable thermal overload relay, allowing setpoint tuning to match motor current and safeguard equipment in continuous-duty industrial environments. Common replacements include Allen-Bradley 100-C + 193 overload combination starters, Schneider Electric TeSys D + LRD overload starter assemblies, and Eaton DILM combination motor starters.