What it is and what it does
The Schneider Electric LC3D80B7 is a TeSys Deca star delta starter — a pre-wired assembly that combines three contactors in one package for reduced-voltage starting of three-phase induction motors. Rated 80 A in AC-3 utilisation category, it handles motor switching up to that current during the transition from star to delta connection. The 24 V AC coil matches standard control voltages found across industrial panels. The front face carries IP20 protection per IEC 60529, meaning it is touch-safe from the front but not sealed against moisture — intended for enclosure mounting, not exposed washdown areas. Pollution degree 3 rating suits it for industrial environments with conductive pollution.
Sourcing and lifecycle reality
This part is marked obsolete by the manufacturer. No official successor order code is confirmed. Sourcing is via surplus or broker channel against an RFQ.
What the ratings mean for fit
The 80 A AC-3 rating is the motor-switching current, not the resistive (AC-1) rating — AC-3 covers starting and running of squirrel-cage motors, where the contactor makes and breaks the load under normal running conditions. If your motor full-load current is under 80 A at the rated operational voltage, this starter is sized correctly for the star-delta transition. Operating temperature range spans -40 to 140 °F (-40 to 60 °C), with derating required above 140 °F up to 158 °F (70 °C). Storage tolerance is wider at -76 to 176 °F (-60 to 80 °C). The TH protective treatment per IEC 60068-2-30 means it withstands damp heat cycling — relevant if the enclosure sees condensation or humidity swings. Flame retardance is V1 per UL 94, and fire resistance meets 1562 °F (850 °C) per IEC 60695-2-1 — both indicate the plastic housing resists ignition and does not propagate flame, which matters for panel certification and safety reviews.