The Schneider Electric LC3F225U7 is a pre-wired star delta starter from the TeSys F series, designed for three-phase motor starting where reduced inrush current is needed — typically pumps, fans, compressors, and conveyors on a plate-mounted installation. Rated AC-3 (motor switching), it handles 100 kW at 220/230 V, 200 kW at 380/400 V and 415 V, and 220 kW at 440 V — all 50/60 Hz. The 240 V AC control coil pulls 805 VA inrush at 50 Hz, 970 VA at 60 Hz. The unit integrates three contactors (star, line, delta) with a built-in timing relay providing a 20 s starting time and operating times of 20…35 ms closing, 7…15 ms opening. Auxiliary contacts are pre-configured: 1 NC + 1 NO on the star contactor, 2 NC + 1 NO on line, 1 NC + 2 NO on delta.
AC-3 utilisation category means the starter is rated for switching squirrel-cage motors — making and breaking stalled-rotor currents during start, then carrying full-load current. The 2250 A making capacity (IEC 60947-4-1) and 1800 A breaking capacity tell you it can close onto and interrupt a locked-rotor condition without welding or excessive arcing. Rated insulation voltage is 1000 V per IEC 60947-4-1, 1500 V per VDE 0110 Group C — so it is safe for 690 V systems with margin. The associated fuse recommendation of 315 A gG or 250 A aM (up to 440 V) gives a coordination starting point for branch circuit protection. Mechanical durability is 10 Mcycles; maximum operating rate is 2400 cycles per hour at 55 °C.
Physical integration and wiring
Plate-mounted unit measuring 20.7 in wide × 4.3 in high × 9.3 in deep (525 × 110 × 235 mm). Power connections are bolted — M10 bolts, bar or ring terminals up to 185 mm². Control wiring uses screw clamp terminals accepting 1…4 mm² flexible with ferrule, or solid. Tightening torque: 35 N·m on the power circuit, 1.2 N·m on control. No DIN-rail mounting — this is a plate/frame install, typical for a motor control centre bucket or a dedicated backplate.
Standards compliance covers EN/IEC 60947-4-1 and 60947-1, plus JIS C8201-4-1 — accepted across European, IEC, and Japanese markets. The protective treatment is TH (tropicalised), suitable for humid environments.