The LC1F150B7: The 250 A AC-3 rating governs motor switching — that is the current the contactor can make and break across the motor start profile. For resistive loads (AC-1), the thermal current Ith is 250 A at 50 Hz, with 22 W dissipation per pole. The AC-4 rating at 22 kW / 400 V covers plugging and inching duty. Rated breaking capacity is 1200 A per IEC 60947-4-1, giving fault-clearing headroom. Mechanical durability is 10 million cycles; maximum operating rate is 2400 cycles/hour at 55 °C. The contactor is plate-mounted (not DIN rail), sized 6.7 x 6.4 x 6.7 inches (171 x 163.5 x 170 mm). Power connections are bolted bar or ring terminals up to 120 mm²; control circuit uses screw clamp terminals for 1–4 mm² wire. Ambient operating range is -40 to 60 °C, storage -60 to 80 °C. IP2X front face with shrouds per IEC 60529.
Lifecycle and replacement path
The LC1F150B7 is end-of-life (EOL). For a BOM-line replacement, the TeSys F series includes higher-rated frames (e.g., LC1F185, LC1F225, LC1F265, LC1F330, LC1F400, LC1F500, LC1F630, LC1F800) that may fit the same mounting footprint — verify coil voltage, control circuit type, and physical dimensions before specifying.
Designed to IEC 60947-4-1, EN 60947-4-1, JIS C8201-4-1, and VDE 0110 group C (rated insulation voltage 1500 V). Overvoltage category III. Protective treatment TH (tropicalized). No RoHS/REACH/UL status is on record in the evidence; compliance documentation should be requested at quote time.