Siemens 3RT2016-1FB44-3MA0 Electrical Contactor

Siemens 3RT2016-1FB44-3MA0 is a compact three-pole power contactor (size S00) designed for AC-3 duty, capable of switching up to 9 A and 4 kW at 400 V with three normally open main contacts. The 24 V DC coil includes an integrated diode for suppression, and the unit provides an integrated captive auxiliary switch block with two normally open and two normally closed contacts, wired via screw terminals. Rating and isolation specs include a maximum AC-3 operating voltage up to 690 V, a coil-to-main isolation rating of 400 V, main contacts (NO) x3 and auxiliary contacts (NO x2, NC x2), and 6 kV surge resistance on both main and auxiliary circuits. Power consumption is 0.7 W per pole (2.1 W total at rated current), with a mechanical life of about 10 million switching cycles, and an operating temperature range from -25°C to +60°C at elevations up to 2,000 m.