What it is and what it does
The Schneider Electric LP1D40004GD is a 4-pole contactor from the TeSys Deca range, rated for resistive loads at 60 A in AC-1 utilisation category at 440 V, with a 125 V DC coil. It's built to switch power circuits in industrial control panels, handling motor starting (AC-3, AC-3e) and resistive heating loads (AC-1) up to its rated operational voltage. The contactor carries approvals to IEC 60947-4-1, EN 60947-4-1, BS 5424, NF C 63-110, JEM 1038, and VDE 0660, giving it broad acceptance across European and Asian markets. The TH protective treatment (pollution degree 3 per IEC 60068) suits it for environments with moderate conductive contamination.
Lifecycle reality — obsolete, sourced to order
If you're maintaining an existing panel that uses this contactor, the 4-pole form factor and 125 VDC coil voltage are the critical fit parameters to match when evaluating a replacement. The TeSys Deca series had a long production run, so a parametric cross-reference within the same family is possible, but no official replacement code is published.
Key ratings and what they mean for fit
The AC-1 rating of 60 A at 440 V governs resistive loads like heaters or lighting — that's the current the contactor can make and break without arc damage. For motor duty, the AC-3 and AC-3e categories apply, which derate the current for inductive starting. The 4-pole configuration (4P) means it switches all four poles simultaneously, with a non-overlap time of 1.5 ms between NC and NO contacts on both energisation and de-energisation — important for interlocking circuits that must avoid a make-before-break condition. The contactor mounts to a plate or DIN rail, with dimensions of 182 mm depth, 85 mm width, and 127 mm height. It's rated IP2X for finger protection, so it's intended for installation inside an enclosure, not exposed to washdown. The permissible ambient temperature range is -5 to 60 °C, with a wider storage range of -40 to 70 °C at coil voltage. Operating altitude goes to 3000 m without derating, which covers most high-elevation plant sites. Mechanical robustness is specified for shock and vibration: the contactor withstands 8 Gn for 11 ms when open, 10 Gn for 11 ms when closed, and vibration up to 4 Gn from 5 to 300 Hz in the closed position. This makes it suitable for installation on machinery or conveyors with moderate vibration levels.