Siemens 3RH2244-4BG40 Contact Relay 4NO 4NC 125V DC

Siemens 3RH2244-4BG40 is a SIRIUS 3RH2 series contactor relay with eight poles: four normally open (NO) and four normally closed (NC), designed for a 125 V DC control coil and housed in the compact S00 size. It features ring-lug terminals for secure wiring and includes a captive auxiliary switch to provide built-in signaling of auxiliary conditions without additional parts. The coil operates at 125 V DC and draws about 4 W in the holding state, delivering reliable energization with low standby power. The main circuit is rated for insulation up to 690 V and the unit supports a wide operating temperature range from –25 to +80 °C, making it suitable for industrial environments. With a mechanical service life of up to 10,000,000 switching cycles, this eight-pole configuration enables complex control logic—such as sequencing or interlocking—within a single device, and it is commonly used in automation panels and SUVA-compatible applications where 4 NO/4 NC contacts are required in a compact form factor.