The Schneider Electric TeSys LC1K16004M7 is a 4-pole contactor with a 220-230 V AC 50/60 Hz coil, rated for 20 A in AC-1 utilisation category (resistive loads). That AC-1 rating is the key fit number: it governs continuous current for resistive heating, lighting, or similar non-inductive circuits. For motor (AC-3) duty, the contactor's rating will be lower — so if this is going on a motor start, verify the locked-rotor and full-load current against the maker's AC-3 curve, not the headline 20 A AC-1 figure.
Screw-clamp terminals accept 1 or 2 conductors, solid 1.5-4 mm² or flexible with ferrule 0.34-2.5 mm². The 45 mm width fits a standard 4-pole contactor footprint — measure your existing backplate or DIN rail segment before committing. Tightening torque is 0.8-1.3 N·m, so a standard screwdriver with PH2 or flat Ø 6 mm tip is fine. No built-in coil suppression; add a varistor or RC snubber across the coil if driving from a PLC output or if nearby electronics are sensitive to the inductive kick.
Key electrical and mechanical specs
Breaking capacity is 110 A at 440 V, 80 A at 500 V, 70 A at 660-690 V. Mechanical durability is 10 million cycles; maximum operating rate is 3600 cycles per hour. Associated fuse rating is 25 A gG or aM. Heat dissipation is 1.3 W. The contactor is IP2X finger-safe per VDE 0106 when mounted in an enclosure. Coil inrush is 30 VA, hold-in is 4.5 VA at 20 °C.