SIRIUS Size S2 power contactor — 3RT1036-1AL24-ZX95
It carries a rated operational power of 22 kW at 400 V in AC-2 duty (slip-ring motor starting), and 30 kW at 500 V — the rating that governs the real motor load it can handle.
The AC-3 rating (squirrel-cage motors, direct-on-line start) is the more common benchmark; this Size S2 frame typically covers motors around 18.5–22 kW at 400 V depending on the specific variant. AC-1 resistive load switching is rated at 1000 operations per hour maximum, while AC-4 (plugging/inching) is limited to 300 1/h — so if your application involves frequent reversing or jogging, the mechanical life of 10 million cycles is not the limiting factor; the electrical endurance at AC-4 is. The auxiliary contact ratings cover the coil circuit: 10 A at 24 V, 6 A at 230 V, 3 A at 400 V. These are the make/break capacities for the contactor's own control coil and any auxiliary contacts in the same block — useful when coordinating with a PLC output card or a control transformer. Terminals are screw-type on the main circuit, accepting solid conductors from 2x 0.5 mm² up to 2x 4 mm², and stranded from 2x 0.75 mm² up to 2x 25 mm². The control circuit terminals accept 2x (0.75... 16 mm²) solid or stranded. IP20 on the front, IP00 at the terminals: the front is finger-safe, but the wiring zone requires the panel enclosure to provide the IP rating.
Side-by-side mounting is permitted — no mandatory spacing between contactors, which keeps the panel width tight. Dimensions: 55 mm wide, 112 mm high, 164 mm deep.