Its headline motor ratings are 22 kW at AC-2 duty at 400 V (slip-ring motors, moderate switching) and 41 A at AC-4 duty at 400 V (plugging, inching, reversing — the harshest motor-switching regime). The 55 mm width and 112 mm height fit standard panel layouts; depth is 164 mm including terminals. Front protection is IP20 (finger-safe), terminal area is IP00 — the wiring compartment is open to the panel environment, so maintain clearance to grounded metalwork per local code.
Thermal and mechanical endurance — switching frequency limits
Maximum switching rates: 1 000 cycles/hour at AC-1 (resistive), 800 at AC-3 (standard squirrel-cage motors), 400 at AC-2, and 300 at AC-4. The AC-4 limit is the binding constraint for reversing or inching duty — exceeding 300 cycles/hour accelerates contact wear. Mechanical life is 10 000 000 cycles typical.
Termination and wiring — screw terminals, conductor sizes
Main current circuit terminals accept solid conductors: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), max 2x (0.75 to 4 mm²). Stranded conductors: 2x (0.75 to 25 mm²).