The LC1F150P5: The 250 A AC-3 rating governs motor switching — that's the current the contactor can make and break across a typical induction motor load. For resistive heating (AC-1), the thermal current Ith is 250 A at 50 Hz, with 22 W dissipation per pole. The 0.35 mOhm average impedance per pole at 250 A gives a voltage drop worth checking against your load's minimum operating voltage.
Plate-mounted, not DIN-rail — plan for a drilled backplate or sub-panel. Dimensions are 171 mm deep, 163.5 mm wide, 170 mm tall. Power connections accept bar (25 x 3 mm busbar), ring lugs up to 120 mm², or bolted connection. Control wiring uses screw clamp terminals, 1 to 4 mm² flexible or solid. Torque power circuit connections to 18 N·m, control circuit to 1.2 N·m. Front face with shrouds achieves IP2X.
Standards and Environmental Range
Certified to IEC 60947-4-1 and EN 60947-4-1, the standard for contactors and motor-starters. Rated insulation voltage is 1000 V per IEC 60947-4-1, 1500 V per VDE 0110 Group C. Overvoltage category III suits fixed-installation distribution panels. Protective treatment is TH (tropicalized) for humid environments.