The Schneider Electric LE4D09P7A04 is an enclosed direct-on-line (DOL) starter from the TeSys LE range, designed for standard motor starting applications. It combines a contactor and fuse disconnector in a single IP65 polycarbonate enclosure, with a thermal overload relay ordered separately. The unit is rated for AC-3 utilisation category and carries a conventional free air thermal current of 9 A, making it suitable for switching motor loads up to 4 kW at 380/400 V AC 50/60 Hz.
The 9 A rating under AC-3 duty governs motor switching capability — this is the current the starter can handle when making and breaking inductive motor loads. For a 4 kW, 400 V three-phase motor, the full-load current typically sits around 7.5–8 A, so this starter provides reasonable headroom. The 230 V AC control coil matches standard panel control voltages across much of Europe and Asia. The associated fuse rating of 12 A aM (10 x 38 mm) provides short-circuit protection coordination per IEC 60947-4-1. The aM characteristic means the fuse is designed for motor protection, allowing brief inrush without nuisance blowing while clearing faults quickly.
Enclosed DOL starters like this one are deployed in industrial and commercial installations where a motor needs local on/off control with overload protection, but where a separate panel is impractical. Typical applications include small conveyors, pumps, fans, compressors, and machine tools in environments requiring washdown-rated enclosures.
Integration Notes
The enclosure measures 186 mm wide by 330 mm high by 167 mm deep, with multiple cable entry options: two each of ISO20, ISO25, ISO32, and ISO40 knockouts on both top and bottom faces. This provides flexibility for routing incoming supply and motor cables without additional gland plates. The polycarbonate material is lightweight and corrosion-resistant, but care should be taken with torque settings on the lid screws to avoid cracking. The thermal overload relay is ordered separately — the starter itself includes only the contactor and fuse disconnector. When specifying the overload, ensure it matches the motor's full-load current and is compatible with the TeSys LE mounting interface.