Siemens 3RT1025-1A Contactor

Siemens 3RT1025-1A is a three-pole motor starter in the Sirius 3RT family that switches three‑phase power to a load with six main terminals (three inputs and three outputs) for L1, L2, L3 and T1, T2, T3. The coil operates on 110–120 V AC at 50/60 Hz, enabling remote or PLC‑driven control of the motor. With a rated current of 17 A, it handles standard small to mid‑size three‑phase motors typical in light industrial applications. This contactor is UL and CSA listed, reflecting compliance for common North American electrical installations. Being a Sirius 3RT device, it is designed for reliable motor control in equipment such as conveyors, pumps, fans, and other automation components where compact, robust control of a three‑phase motor is required. The 3RT1025-1A provides a straightforward on/off switching solution, compatible with auxiliary contact options and motor protection accessories in the broader 3RT/SIRIUS ecosystem, allowing integration with starters and overload relays as part of a broader motor control scheme.