Siemens 3RT1055-6AP36 Three-Phase AC Contactor

Siemens 3RT1055-6AP36 is a SIRIUS three‑pole power contactor rated for AC‑3e/AC‑3 duty at 150 A and 75 kW at 400 V AC (50–60 Hz), with a 220–240 V coil. It provides 2 normally open and 2 normally closed auxiliary contacts, uses conventional main circuit drive with busbar control and screw‑terminal connections for the main and auxiliary circuits, and is a size S6 model. The unit weighs 3.32 kg and carries insulation ratings of 1,000 V for the main circuit and 500 V for the auxiliary circuit, with a maximum coil‑to‑main isolation of 690 V. Designed for long life, it offers up to 10,000,000 mechanical operating cycles and is suitable for industrial motor control in automation panels.