The 3RT1025-3AR60: Rated 7.5 kW at AC-2 duty on 400 V, and 15.5 A at AC-4 on 400 V — the AC-2 figure governs standard motor starting (slip-ring or wound-rotor), while the AC-4 rating covers reversing or inching duty where the contactor breaks full motor current. For Type 2 coordination, the upstream fuse is 25 A gL/gG; Type 1 allows up to 63 A gL/gG.
Panel Fit and Environment
S0 frame means 45 mm width, 85 mm height, 90 mm depth — a standard footprint for 7.5 kW contactors. Screw terminals accept 2x (0.25…2.5 mm²) solid or 2x (1…2.5 mm²) stranded, up to 2x 10 mm² or 1x 8 AWG. Front face is IP20; the terminal area is IP00, so keep live parts behind a panel door or finger-safe shroud. Operating temperature range -25 to +60 °C, with a maximum operating altitude of 2,000 m. Pollution degree 3 — suitable for industrial environments with conductive dust or condensation, but not for direct washdown (no IP65/67 rating on this unit). Side-by-side mounting is permitted, with 6 mm spacing at the side.
Coil and Control Circuit
Coil operates at 50 Hz (0.8…1.1 x rated voltage) or 60 Hz (0.85…1.1 x rated voltage). The 400 V rated value at 50 Hz and 400…440 V at 60 Hz define the main pole voltage, not the coil — verify the coil code suffix for your control voltage. The contactor carries 10 A at AC-12 (control-circuit load) and provides auxiliary contacts rated for 10 A at 24 V, 2 A at 60 V, 1 A at 110 V, 0.3 A at 220 V, 6 A at 230 V, and 3 A at 400 V. Mechanical endurance is rated at 10 million operating cycles typical. No instantaneous contact (zero auxiliary contact blocks included as standard).