Siemens 3RT1016-2KB42 Contactor

Siemens 3RT1016-2KB42 is a three-pole power contactor designed for AC-3 motor switching, capable of handling 9 A and a 4 kW load at 400 V AC. This device supports reliable start/stop control of three-phase motors in industrial automation and includes one normally closed auxiliary contact for signaling or interlock applications. Part of the Siemens 3RT1 family, it is intended for use in applications such as conveyors, pumps, fans, and machine tools where compact, robust motor switching at 400 V is required. The model integrates with standard control circuits and PLC interfaces, enabling straightforward wiring of your motor control scheme. When selecting replacements, ensure the model delivers the AC-3 rating at 400 V and matches the auxiliary contact configuration to your control logic and interlock needs. Typical configurations include direct control from industrial controllers or integration with start/stop logic modules, allowing safe, coordinated motor control in automated systems.