Siemens 3RF2412-2BB04 Contactor

Siemens 3RF2412-2BB04 is a SIRIUS solid-state contactor designed to switch three-phase AC loads with a 24 V DC control coil. It features three main power poles rated for AC-3 operation across 48–480 V AC and a continuous current rating of 12.5 A per pole, suitable for motor, pump, fan, and conveyor loads in automation systems. The 24 V DC coil consumes about 22 W, enabling reliable actuation from standard control circuits (roughly 0.9 A coil current). The unit includes two normally open auxiliary contacts for signaling or interlocking, and it uses spring-loaded terminals for secure connections in industrial cabinets. Rated for ambient temperatures up to 40 °C, this device provides fast, robust switching with fewer mechanical wear than traditional electro-mechanical relays. As part of the Siemens 3RF34 family, it is designed for compact, modular machine control in manufacturing environments where dependable solid-state switching and straightforward integration into control circuits are critical.