The 3RT1024-1BB44: The 10 A AC-12 rating covers resistive loads and control-circuit switching — this is the maximum continuous current the main contacts can carry in that duty. For motor loads, the contactor is rated at 7.5 kW at 400 V and 690 V (AC-3, 3-phase induction motors). Coil switching capacity across DC voltages: 10 A at 24 V, 2 A at 60 V, 1 A at 110 V, 0.3 A at 220 V. These are the auxiliary contact ratings for DC circuits — useful when the contactor's own auxiliaries switch DC loads like PLC inputs or indicator lamps.
Side-by-side mounting is permitted, so several contactors can line up without spacing gaps — useful when packing multiple motor starters into a panel. Main circuit terminals accept solid/stranded conductors: 2x (0.5–1.5 mm²), 2x (0.75–2.5 mm²), max 2x (0.75–4 mm²). Auxiliary terminals accept 2x (1–2.5 mm²) and 2x (2.5–6 mm²), max 2x 10 mm². All are screw-type terminals, so a standard Pozidriv or flathead driver is all that's needed for termination.
Environmental and coordination
For type 2 coordination (the contactor remains usable after clearing the fault), the required fuse is gL/gG 25 A.