The LC1G1854LSEN is a 4-pole (4 NO) power contactor from the TeSys Giga range, built for heavy power switching in motor and resistive load applications. Rated insulation voltage is 1000 V, and it handles utilisation categories AC-3, AC-3e, AC-1, AC-5a, AC-5b, AC-6a, AC-6b, DC-1, DC-3, and DC-5 — meaning it switches motor loads, resistive heaters, and DC circuits across a wide industrial range. Safety reliability is documented with B10d values of 400,000 cycles at nominal load and 3,000,000 cycles at mechanical load per EN/ISO 13849-1.
Power dissipation per pole is 20 W in AC-1 at Ith 305 A and 6 W in AC-3 at Ith 185 A — this drives the thermal budget inside the enclosure; the 0.00017 Ohm average impedance confirms low resistive losses at rated current. Associated fuse ratings are listed for multiple standards: 200 A aM, 160 A aM, 315 A gG, and 300 A UL Type J at ≤600 V — giving the panel builder a direct guide for short-circuit protection coordination without derating guesswork.
Mounting and integration details
Mounting is plate-based (not direct DIN rail), with a connection pitch of 35 mm. The power circuit accepts bar or busbar cross-section up to 25 x 6 mm, or ring terminals up to 185 mm². Tightening torque for power connections is 159.3 lbf·in (18 N·m). The depth is 7.6 in (193 mm), width 5.6 in (143 mm), and height 7.6 in (193 mm) — dimensions that matter when planning gland plate clearance and fill factor in a multi-contactor lineup. IP degree of protection is IP2X on the front face with shrouds per IEC 60529 and VDE 0106, meaning finger-safe but not sealed against moisture — suitable for indoor panel installation with proper enclosure.