Siemens 3RT2025-1BB44 Three Phase Power Contactor

Siemens 3RT2025-1BB44 is a three‑pole power contactor designed for AC‑3e/AC‑3 motor control duty, featuring a 24 V DC coil and a rated current of 17 A that enables switching up to 7.5 kW at 400 V. It includes two normally open and two normally closed auxiliary contacts wired through screw terminals for reliable signaling and interconnection, and it ships with a removable auxiliary switch to simplify control‑panel integration. This unit is part of the SIRIUS 3RT family, sized as S0, and has a net weight of 0.645 kg, making it suitable for compact installations. The 3RT20‑series device is intended for switching AC‑3/e loads in motor circuits, aligning with Siemens’ Sirius ecosystem for straightforward compatibility within Siemens control architectures.