What this part is and why it matters for your BOM
The LC3D80V7 is a pre-wired star delta starter from the TeSys D range, built for motor control in AC-3 duty — the category that governs switching of squirrel-cage motors during starting and running. Rated 80 A, it handles motor loads up to that current under the AC-3 curve, which is the real-world rating for starting current and break-make operations, not the higher resistive AC-1 figure. The 400 V AC coil matches standard three-phase control voltages common across European and Asian panel designs. This is a 3-pole device with three normally-open power poles per phase (3 x 3P), configured for star-delta transition. The IP20 front face means it is protected against solid objects larger than 12 mm but not against moisture — suitable for enclosure mounting where the panel door provides the environmental seal.
Environmental and compliance profile
Rated for operation from -40 °C to 60 °C ambient, with derating required above 60 °C up to 70 °C. Storage range spans -60 °C to 80 °C. The TH protective treatment per IEC 60068-2-30 means it withstands damp heat, cyclic — relevant for non-condensing humidity in unheated enclosures. Fire resistance tested to 850 °C per IEC 60695-2-1, and the housing material achieves V1 flame retardance per UL 94. Pollution degree 3 rating means it is suitable for environments with conductive pollution or dry non-conductive pollution that becomes conductive due to condensation — typical for industrial control panels not in clean-room conditions. Mechanical robustness: the contactor withstands 2 Gn vibration (5–300 Hz) when open, 3 Gn when closed, and shock ratings of 8 Gn (open) and 10 Gn (closed) for 11 ms. Operating altitude is rated to 3000 m without derating.