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The ECM INDUSTRIES LLC GSW-51 is a red illuminated square rocker switch designed for single pole, single throw (SPST) on/off switching in AC-rated electrical applications. Built with spade terminals for fast, tool-free wire connections, it mounts through a round hole cutout and ships in a carded retail pack of five units. The illuminated red actuator gives a clear visual indication of switch state, which is valuable in panel and equipment installations where status confirmation matters. Electricians and equipment technicians use this switch in control panels, pool equipment enclosures, HVAC accessories, and other AC-powered assemblies.
The GSW-51 is suited for residential and light commercial AC applications where a compact, illuminated rocker switch is needed in an existing round hole mounting configuration. Its spade terminal design speeds up wiring during new installations and service calls alike. The carded five-pack format supports both single-job repairs and bench stock for service vehicles. This switch is rated for AC circuits only and is not intended for DC switching applications.
Designed as an OEM-style replacement or upgrade rocker switch for AC-rated control panels, pool equipment enclosures, HVAC accessory wiring, and other electrical assemblies requiring a square illuminated rocker with round hole mounting and spade terminal connections.
Installation should be performed by a qualified electrician in accordance with applicable NEC requirements. Always de-energize and lock out the circuit before removing an existing switch or installing this unit. Confirm the circuit is AC-rated before wiring, as this switch is not approved for DC use. Spade terminals should be fully seated and crimped to appropriate connectors to ensure a secure, low-resistance connection.
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