Mounting and panel fit
The 3RT1025-3XB44-0LA2: Mounts via screw or snap-on onto 35 mm DIN rail per DIN EN 50022. The S0 frame measures 45 mm wide × 119 mm high × 150 mm deep. Side-by-side mounting is allowed, with 10 mm clearance required upwards, forwards, downwards, and at the side. Front face carries IP20 protection; the terminals themselves are IP00 — keep live parts behind a panel door or cover.
Coil and auxiliary contact ratings
The DC coil draws 0.7 A initial inrush, settling to 1.25 A holding at 24 V rated value. Two instantaneous auxiliary contacts are built in. Switching capacity on the auxiliaries: 10 A at 24 V, 2 A at 60 V, 1 A at 110 V, 0.3 A at 220 V — all DC. Mechanical life is rated at 10 million operating cycles typical.
Motor load ratings
For motor applications, the contactor is rated 10 kW at 500 V, 11 kW at 690 V. Horsepower ratings: 3 hp at 230 V, 5 hp at 200/208 V and 220/230 V, 10 hp at 460/480 V, 15 hp at 575/600 V. The main circuit withstands a rated impulse voltage of 6 kV. Maximum operating altitude is 2 000 m without derating.
Termination and wiring
Screw-type terminals on the main circuit accept 2x (0.25 to 2.5 mm²) solid, 2x (1 to 2.5 mm²) and 2x (2.5 to 6 mm²) stranded, and up to 2x 10 mm² maximum. The auxiliary contact terminals accept 2x (0.25 to 2.5 mm²) solid.