Rated for 185 A in AC-3 duty (motor switching) and 305 A in AC-1 (resistive loads), with a coil accepting 200...500 V AC 50/60 Hz or DC.
Ratings that govern fit
For resistive bank or heater loads, the AC-1 thermal continuous current (Ith) is 305 A per pole, dissipating 20 W per pole at that level. Mechanical durability is 8 Mcycles, and the maximum operating rate hits 600 cycles/h in AC-3. Coil power consumption shows an inrush of 215 W DC, but the built-in bidirectional peak limiting keeps the hold-in draw lower. Drop-out threshold is 0.1 to 0.45 Uc (at <60 °C), which is wide enough to avoid nuisance drop on moderate sags.
Mounts on a plate; dimensions: 255 mm high, 193 mm deep, 143 mm wide. Power terminals accept bar or bolted lugs up to 185 mm². Control circuit uses push-in terminals for 0.2…2.5 mm² stranded or solid. Tightening torque for main connections: 18 N·m.