NEMA Fusible Disconnect Switch Combination Starters

Class 8538 and 8539 Type S combination starters combine the requirements of motor overload and short circuit protection into one package. These starters are manufactured in accordance with NEMA standards and are UL Listed (although some FORM numbers may not be listed – contact your local Square D representative for information). Class 8538 and 8539 combination starters are designed to operate at 600 Vac maximum, 50 to 60 Hz – and are supplied with melting alloy overload relays as standard.

This catalog is a guide to contactors, starters, overload relays, and accessories.

This book contains examples of control circuits, motor starting switches, and wiring diagrams for ac manual starters, drum switches, starters, contactors, relays, limit switches, and lighting contactors.

Choosing the Right Motor Control and Protection Components

This data bulletin describes UL combination starter types, the implications of the UL "self-protected" designation, coordination of motor control equipment, and the benefits of Type E and Type F combination starters in panel design.

This product data bulletin describes how to conform to the new standard using motor controls built to meet NEMA and IEC standards and related benefits associated with Type 2 coordination.