The Siemens Sirius 3RT2316-2BB40 is a four‑pole AC‑1 contactor with a 24 V DC coil, designed to switch three‑phase loads in industrial control circuits. It is rated for up to 400 V and 18 A at an ambient temperature of 40 °C, providing a compact 3RT23 family performance for moderate motor and load switching. The unit uses spring‑loaded terminals and comes in size S00, offering reliable connections in a compact package. Typical applications include starting and stopping 3‑phase motors and other resistive/inductive loads in automation panels and control circuits.
