What this 4-pole TeSys Giga handles that a standard contactor can't
The LC1G1504LSEN is a 4-pole (4NO) power switching contactor from the TeSys Giga range, built for heavy-duty motor and resistive loads across AC-3, AC-3e, AC-1, and DC-1 through DC-5 utilisation categories. The 8 Mcycles mechanical durability means this contactor outlasts the typical panel refresh cycle in continuous-process plants; the B10d of 400,000 cycles at nominal load (EN/ISO 13849-1) also qualifies it for safety-related switching where the machine builder needs a reliability figure for the risk assessment.
Coil voltage range and what it means for panel wiring
The drop-out threshold is 0.1 to 0.45 Uc at up to 60 °C, so the contactor stays pulled in through brief sags but drops cleanly on a controlled stop. Inrush power at DC pickup is 215 W; the built-in peak limiter keeps the coil driver from seeing a current spike, which matters when the PLC output card or relay has a limited surge rating. Power circuit terminals accept busbar up to 25 x 6 mm or ring lugs up to 185 mm² — the connection pitch is 35 mm, which aligns with standard busbar drilling patterns for panel assembly.
Making and breaking capacity for fault coordination
Rated making capacity is 1890 A at 440 V; rated breaking capacity is 1280 A at 440 V — these figures define the contactor's ability to close into and interrupt fault currents without welding or excessive arcing. For coordination, the associated fuse ratings are 160 A aM, 315 A gG, or 300 A UL Class J at ≤600 V. The overvoltage category is III, meaning it is rated for fixed-installation distribution panels where transient overvoltages from the supply are expected. Power dissipation per pole is 10 W in AC-1 at Ith 275 A, and 5 W in AC-3 at Ith 150 A — these numbers drive the thermal budget inside the enclosure.
Physical fit and environmental sealing
Dimensions are 7.6 in (193 mm) deep, 5.6 in (143 mm) wide, and 7.6 in (193 mm) high — it mounts on a plate (not DIN rail), so the panel layout needs a drilled or tapped backplate. The dark grey colour is consistent with the TeSys Giga family visual identity. IP2X protection on the front face with shrouds per IEC 60529 and VDE 0106 means the live terminals are touch-safe when the shrouds are fitted; protective treatment TH indicates tropicalised coating for humid or corrosive environments. Mechanical robustness is specified at 2 gn vibration (5...300 Hz) contactor open, 4 gn contactor closed, and shocks of 10 gn (11 ms) open / 15 gn (11 ms) closed — this covers most industrial machinery and marine applications without additional dampening. The tightening torque for power connections is 159.3 lbf.in (18 N.m), which requires a torque wrench during installation.
Sourcing and lifecycle — active production, quoted to order
The contactor carries protective treatment TH and is rated for overvoltage category III installations.