The 3RT1264-6AP36 is a Siemens SIRIUS vacuum contactor in the S10 frame size, with a 220-240 V AC coil and screw-type coil terminals. It ships with an auxiliary switch fitted as standard — no separate add-on required for basic feedback. The kit is complete for a single-contactor build; no loose terminal shrouds or missing hardware.
Panel fit and mounting constraints
The contactor measures 145 mm wide, 210 mm high, and 206 mm deep. Mounting is via screw fixing through two 11 mm holes — no DIN-rail clip on this frame, so budget for a backplate or sub-panel.
Duty cycle and switching life
Maximum switching rates: 800 operations per hour in AC-1 (resistive), 750 in AC-3 (motor starting), 300 in AC-2, and 250 in AC-4 (plugging/inching). The AC-3e rating matches the AC-3 figure at 750 ops/h. Operating times are 40-80 ms for both AC and DC coil supplies. Arcing time is 10-15 ms. The coil operates between 0.8 and 1.1 times its rated voltage (220-240 V AC).
Environmental limits and auxiliary contact ratings
The contactor is a vacuum type, which means arc quenching is contained within the sealed bottle — no arc chutes to clean or replace over the service life.