Siemens 3RT2016-2BB44-3MA0 Three-Phase Contactor

Siemens 3RT2016-2BB44-3MA0 is a three-pole Sirius power contactor with a 24 V DC coil, designed for AC-3 motor switching. It provides two normally open and two normally closed auxiliary contacts with permanently mounted auxiliary contact blocks, and it comes in the compact S00 size with spring-loaded terminals for reliable wiring. Rated for AC-3 operation, it handles up to 4 kW at 400 V and a main current of about 9 A, making it suitable for start/stop control of small-to-medium three‑phase motors in machinery such as conveyors and automated production lines. The coil voltage is DC 24 V, and the device is built for high durability with a mechanical life of up to around 10 million switching cycles. As part of Siemens' 3RT/SIRIUS contactor family, it integrates with standard 3RT-series motor control systems, delivering compact, dependable control in panel installations where space is at a premium.