3 Position Selector Switches for Control Systems

The most common use is manual changeover switching between two power sources, such as switching between a utility feed and a generator. They are also used in industrial control panels to select between two operational modes while ensuring a safe off state in between. Applications include power distribution, source transfer, and electrical isolation in commercial and industrial systems.

The COMO CS I-0-II series is available in four current ratings: 25A, 40A, 63A, and 100A, covering a wide range of industrial and commercial load requirements. With 16 versions across these ratings in 3-pole and 4-pole configurations, you can select the precise specification needed for your panel design.

The COMO CS I-0-II Manual Cam Changeover Switch supports three mounting methods: backplate mounting, DIN rail mounting, and door mounting. This flexibility allows integrators to install the switch in a variety of enclosure types and panel configurations, minimizing adaptation time and reducing installation complexity.

These selector switches comply with UL 60947-4-1 and IEC 60947-3 international safety standards, which govern low-voltage switchgear and control gear. Compliance ensures the products meet stringent requirements for safe operation, fault withstand capability, and consistent performance under load-switching conditions in industrial environments.

Yes. The COMO CS I-0-II is rated for switching and transfer of two low-voltage circuits on load, meaning it can safely open and close electrical circuits while current is flowing. It supports applications up to 600 VAC and rated currents up to 100A, making it suitable for demanding load-break switching scenarios.

A 2-position selector switch toggles directly between two states (e.g., I and II) with no intermediate off position. A 3-position switch adds a center-off (0) position, allowing safe neutral disengagement between transitions. This is critical in source transfer applications where simultaneous connection of two circuits must be prevented to avoid faults or equipment damage.