Siemens 3RT1265-6AR36 is a Sirius vacuum contactor (3RT12 family) designed for AC-3 duty to switch three-phase motors. This 3-pole unit carries a main current up to 240 A at 480 V (242 A at 600 V) and is rated for 132 kW at 400 V, making it suitable for direct-on-line starts of sizable motors in pumps, fans, and conveyors. It includes 2 normally open and 2 normally closed auxiliary contacts, with a busbar-terminal configuration for compact panel installations, and uses the AR36 coil variant rated for 440–480 V AC (A1-A2) with coil power around 7.4 VA at 50 Hz.
