SIRIUS Size S0 power contactor — 3RT1024-1AH04
The screw-type main terminals accept 2x (0.5 to 1.5 mm²) solid, 2x (0.75 to 2.5 mm²) stranded, and up to 2x 4 mm² or 1x 10 mm² — covering the common wire sizes for motor circuits in this frame. Rated for AC-3 duty at 7.5 kW on both 500 V and 690 V supplies, this contactor handles three-phase induction motors up to that power class. For Type 1 coordination, a 63 A gL/gG fuse protects the contactor; for Type 2 coordination (limited weld risk), the fuse drops to 25 A gL/gG.
The 45 mm wide, 85 mm high, 140 mm deep footprint fits the S0 frame standard.
The built-in auxiliary contact block (1 NO + 1 NC) carries a rated operational current of 10 A at AC-12 (resistive loads). For DC switching, the ratings are: 10 A at 24 V, 2 A at 60 V, 1 A at 110 V, 0.3 A at 220 V, and 6 A at 230 V AC. The coil operates at 50 Hz with a voltage tolerance of 0.8 to 1.1 times the rated voltage (48 V).