The LE4D12Q7 is a Schneider Electric TeSys LE enclosed direct-on-line (DOL) starter — a self-contained motor-starting package in a polycarbonate enclosure rated IP65 for dust and hose-down protection. It integrates a contactor, push-button controls (green start, red stop/reset), and provisions for a thermal overload relay and fuse disconnector, all pre-wired in a single enclosure. Rated for utilisation category AC-3 per IEC 60947-4-1, meaning it is designed for starting and stopping squirrel-cage induction motors — the standard duty cycle for most conveyor, pump, and fan loads. Motor power capability varies by supply voltage: 3 kW at 220/230 V AC, 5.5 kW at 380/400/415/440 V AC, and 7.5 kW at 500 V AC.
For motor duty, the actual motor full-load current must be below this — the AC-3 rating at 12 A is the switching capacity for motor starts, not the continuous rating. The associated fuse recommendation is 16 A aM (10 x 38 mm) for short-circuit protection, which sets the upstream protection limit. The enclosure dimensions are 330 mm high, 186 mm wide, and 175.5 mm deep — a substantial footprint that needs panel or wall space. Cable entries are provided on both top and bottom faces: two each for ISO20, ISO25, ISO32, and ISO40 glands, giving flexibility for incoming supply and outgoing motor cables. The polycarbonate material is lightweight and corrosion-resistant but less rigid than metal enclosures in high-vibration environments.