Cummins OTEC400 400A 3ph-120/240V Automatic Transfer Switch Nema 3R

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The OTEC400 transfer switch is designed to automatically transfer electrical loads between utility power and a standby generator. It is suitable for emergency, legally required, an d optional standby applications. The switch continuously monitors both power sources, starts the generator when needed, transfers the load during an outage, and safely returns power to the utility once it is stable. The integrated controller features clear LED indicators and digital pushbuttons for simple operation and monitoring. Key Features: User-friendly microprocessor control Adjustable open transition delay Bi-directional linear actuator design Manual operating handle with shielded terminations Mechanical and electrical interlocking Heavy-duty silver alloy contacts with arc chutes Single-plug harness for simplified installation Show more