The Schneider Electric LC1G1854EHES207N is a TeSys Giga 4-pole contactor rated for motor switching up to 90 kW at 400 V AC in AC-3e duty, with a control coil accepting 48-130 V AC/DC. It's a power-switching and motor-control component designed for panel integration, plate-mounted, with bolted power connections and push-in control wiring. The 90 kW at 400 V AC-3e rating means it handles standard three-phase induction motor loads at that voltage without derating — the rating that governs real-world motor starting and stopping.
The AC-3e utilisation category (90 kW at 400 V) is the motor-switching rating that matters for most industrial applications — it covers starting and stopping squirrel-cage motors under full load. The same contactor also carries AC-4 ratings (90 kW at 400 V) for inching and plugging duty, where the motor is reversed or jogged under load. The AC-1 resistive rating (Ith 305 A, 20 W dissipation per pole) tells you the thermal current capacity for non-motor loads like heaters. Mechanical durability is rated at 8 million cycles, with a maximum operating rate of 500 cycles per hour in AC-3/AC-3e duty, dropping to 150 cycles per hour in AC-4. The B10d safety reliability figures — 400,000 cycles at nominal load, 3,000,000 cycles at mechanical load per EN/ISO 13849-1 — are relevant if this contactor is used in a safety circuit where failure probability must be calculated. Drop-out occurs between 0.1 and 0.45 Uc (below about 22-58 V), which is a wide hysteresis that keeps the contactor from chattering on a sagging supply.
Plate-mounted, 193 mm deep, 105 mm wide, with a 35 mm connection pitch. Power terminals accept bar (25 x 6 mm busbar), ring lugs up to 185 mm², or bolted connections. Tightening torque on the power connections is 18 N·m.
Compliant with EN/IEC 60947-4-1 (contactor standard), EN/IEC 60947-5-1 (control circuit devices), UL 60947-4-1, CSA C22.2 No 60947-4-1, JIS C8201-4-1 and -5-1, plus UL 60335-1 and UL 60335-2-40 Annex JJ for appliance applications. Overvoltage category III, rated insulation voltage 1000 V. Protective treatment TH for tropical environments.