What it is and what it does
The Schneider Electric TeSys Deca LP1D40004ED is a 4-pole contactor rated for 60 A in AC-1 utilisation category at 440 V, with a 48 V DC coil. It is designed for resistive load switching in industrial control panels, where the AC-1 rating governs the continuous current-carrying capacity for non-inductive loads like heaters or lighting banks.
Key ratings and what they mean for fit
The AC-1 rating of 60 A at 440 V is the headline figure for resistive loads. The contactor is also listed for AC-3 and AC-3e duty. The 4-pole configuration (4P) means it can switch four independent circuits simultaneously, or be wired for two-pole switching with double-break per pole. The non-overlap time of 1.5 ms between NC and NO contacts on both energisation and de-energisation ensures break-before-make operation, critical for interlocking motor starters or reversing applications where contact bridging could cause a phase-to-phase fault. The contactor is rated for operation up to 3000 m without derating, and the permissible ambient temperature range is -40 to 60 °C (with derating up to 70 °C). Storage range extends from -60 to 80 °C. This covers most indoor industrial environments without special provisions. Mechanical robustness is specified for shock (10 Gn open, 15 Gn closed) and vibration (2 Gn open, 4 Gn closed, 5–300 Hz), which is typical for contactors mounted on machinery subject to moderate vibration.
Where it goes in the panel
Mounting is on a rail or plate (the spec lists 'Rail Plate' as the mounting support). The dimensions are 85 mm wide, 127 mm high, and 182 mm deep — a standard footprint for the TeSys Deca 4-pole frame, so it fits existing panel layouts using that series. IP2X finger protection is provided, meaning the contactor is touch-safe when installed in an enclosure.
Compliance and environmental ratings
The contactor is certified to IEC 60947-4-1, EN 60947-4-1, BS 5424, IEC 60947-1, EN 60947-1, JEM 1038, NF C 63-110, and VDE 0660 — covering the main international and European standards for contactors and motor-starters. Fire resistance is 850 °C per IEC 60695-2-1, and the enclosure material is rated V-1 per UL 94. Protective treatment is TH (pollution degree 3) per IEC 60068, suitable for environments with conductive pollution.