Siemens 3RT2016-1BB42 is a compact 3‑pole power contactor (size S00) with a 24 V DC coil, designed for AC‑3e motor control and similar inductive loads. It switches up to 9 A and up to 4 kW at 400 V, featuring three normally open main contacts and one normally closed auxiliary contact (1 NC), with screw‑terminal connections for straightforward wiring. This contactor is typically used in industrial control panels to start and stop small motors and other inductive loads driven by a DC coil control signal.
