The Schneider Electric TeSys D LC3D80Q7 is a pre-wired star-delta starter built for motor control, rated 80 A with a 380 V AC coil and configured as 3 x 3P normally-open contacts. It is categorized for AC-3 duty, which means it is designed for starting and disconnecting squirrel-cage induction motors under full load — the standard utilization category for across-the-line motor starting.
What the ratings mean for fit
The 80 A rating is the thermal current through the power poles in the star-delta configuration. In practice, the motor full-load current it can handle in star-delta starting is lower than a direct-on-line contactor of the same rating because each set of contacts carries current for only part of the starting sequence. The AC-3 designation confirms it is rated for switching motor loads, not resistive heaters (AC-1). The operating temperature range is -40 to 140 °F (-40 to 60 °C), with derating required above 140 °F up to 158 °F (70 °C). Storage range is wider at -76 to 176 °F (-60 to 80 °C). The front face carries IP2X protection, meaning it is finger-safe against accidental contact with live parts but not sealed against moisture — this is normal for a panel-mounted device and not suitable for washdown environments. Fire resistance is rated at 1562 °F (850 °C) per IEC 60695-2-1, and the plastic materials carry a V-1 flammability rating per UL 94. Pollution degree 3 means it is intended 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.
Sourcing and lifecycle reality
The part carries protective treatment per TH IEC 60068-2-30, which means it has been tested for damp heat cyclic exposure — relevant if the replacement part will live in a non-conditioned enclosure. The mechanical robustness specs show it withstands 2 Gn vibration (contact open) and 8 Gn shock (contact open), with higher values when closed. These are useful for validating fit in high-vibration applications like pump or compressor panels.