Square D 8536SBO2H308S Starter Contactor Size 0

Square D 8536SBO2H308S is a NEMA Size 0 magnetic motor starter (Type S), non-reversing, with three poles and a 120 V AC coil designed for direct control of small motors in industrial and commercial equipment. It uses an open-style enclosure and includes Motor Logic overload protection integrated into the unit, providing motor protection without a separate overload relay. The starter is rated for 18 A on 3-phase systems and delivers 3 HP when operated at 200–230 VAC, and 5 HP when used at 460–575 VAC, reflecting the standard horsepower rating for Size 0 starters across typical line voltages. With a 120 VAC coil suitable for 50/60 Hz control circuits, this compact unit offers space-efficient motor control while delivering reliable switching for small motors. This model’s combination of size, coil, and motor-logic protection makes it a common choice in automation panels and equipment where a simple, robust starting solution is required for 3-phase motors.