The LC1D40U7M is a TeSys D nonreversing contactor rated 40 A in AC-3 duty, which is the standard category for squirrel-cage motor starting — that 40 A figure is the motor full-load current it can switch, not a resistive-heater current. At 480 VAC it handles 30 HP, and the short-circuit current rating (SCCR) reaches 100 kA when paired with the right upstream fuse or breaker, so it can sit on a high-fault panel without needing a bigger main. The coil pulls 240 VAC at 50/60 Hz, common across North American and European line voltages. It also carries AC-1 (resistive load), AC-4 (plugging/inching), and AC-3e (enhanced motor) ratings, so it's not limited to simple on-off motor duty — you can run it on heater banks or reversing applications where the contacts see inrush on every closure.
Standards and environmental range
It's certified to CSA C22.2 No 14, EN 60947-4-1, EN 60947-5-1, IEC 60947-4-1, IEC 60947-5-1, and UL 60947-4-1 — that covers both North American and IEC installations, so it passes inspection in most jurisdictions without a second part number. The flame retardance is V1 per UL 94, and the glow-wire test passes at 1562 °F (850 °C) per IEC 60695-2-1, which is the standard for unattended equipment. Ambient temperature range is -40 to 140 °F (-40 to 60 °C) without derating, and up to 158 °F (70 °C) with derating — that's enough for most indoor panels and many outdoor enclosures in moderate climates. Operating altitude goes to 9842 ft (3000 m), so it works in high-altitude plants without a special version.
The contactor measures 5 in (127 mm) high, 3.0 in (75 mm) wide, and 4.7 in (119 mm) deep — that's a standard TeSys D footprint, so it drops into existing panel layouts with the same screw or DIN-rail mounting pattern. It's an open-style device (no enclosure), meant for panel mounting with a separate enclosure. Mechanical robustness: it withstands 2 Gn vibration (5-300 Hz) with contacts open, 3 Gn with contacts closed, and shocks of 8 Gn (open) and 10 Gn (closed) for 11 ms — tough enough for a motor control center on a vibrating floor or near rotating equipment.