Mounting and wiring constraints
The 3RT1056-6AT36-0UA0: Mounting is by screw fixing through a single 9 mm hole, with the contactor body sized at 172 mm high by 120 mm wide by 170 mm deep. Clearance requirements: 10 mm upward, 10 mm downward, 10 mm at the sides, and 20 mm forward for arc-chamber venting. The mounting position allows vertical surface orientation with +/- 90° rotation and +/- 22.5° tilt forward/back — useful when fitting into a tight enclosure where the backpanel is already dense. The coil connection uses screw-type terminals, and the auxiliary switch is integrated, so no separate add-on block is needed for basic status feedback.
Duty-cycle and operating life
Mechanical life is rated at 10 million operations typical. Electrical life depends on duty: AC-1 (resistive loads) allows up to 800 operations per hour, AC-3 (squirrel-cage motors, starting only) allows 750 ops/h, AC-2 (slip-ring motors) drops to 300 ops/h, and AC-4 (plugging/inching) is the hardest at 130 ops/h. The AC-3e rating also sits at 750 ops/h, matching the standard AC-3 figure. Operate time is 40-60 ms for both AC and DC coils, with an arcing time of 10-15 ms — the contactor opens fast enough to clear faults before upstream protection needs to coordinate.
Environmental and auxiliary ratings
Operating temperature range is -25 to +60 °C, storage from -55 to +80 °C — the storage limit governs handling during transport, not running conditions. The auxiliary contacts are rated for 10 A at 24 V, 2 A at 48 V, 2 A at 60 V, and 1 A at 110 V, which covers typical PLC input or relay coil loads in the control circuit. Power factor is 0.8 at both 50 Hz and 60 Hz, so the contactor's inductive load capability is consistent across line frequencies.