Three-stage switch

Three-stage switches, also known as three-position selector switches or cam switches, are electromechanical devices designed to control electrical circuits by selecting among three distinct operational states. These switches typically feature a rotary actuator that allows manual selection between positions such as Off, Position 1, and Position 2, or similar configurations. They are commonly rated for voltages up to 690V AC and currents ranging from 10A to 100A, depending on the model. The switching mechanism often includes multiple poles (e.g., 2P, 3P, or 4P) and can be configured for momentary or maintained action. The robust construction, often with IP65 enclosures, ensures reliable operation in industrial environments. These switches are essential for applications requiring sequential control, such as motor speed selection, pump control, or lighting circuit switching.

Three-stage switches are widely deployed in industrial automation, power distribution panels, and control cabinets. They are used in sectors like manufacturing, water treatment, HVAC systems, and renewable energy installations. In motor control centers, they enable manual selection of forward, reverse, and stop functions. In lighting systems, they allow switching between different lighting groups or dimming levels. Their versatility also extends to safety circuits, where they provide a clear visual indication of the selected state, enhancing operational safety.

Key subcategories include rotary cam switches, selector switches, and changeover switches. Common article codes follow patterns like TSS-3P-20A-690V or CS-3-40A-400V, where TSS denotes three-stage switch, 3P indicates three poles, and the numbers represent current rating and voltage. Specific examples include the TSS-3P-20A-690V for general industrial use and the CS-3-40A-400V for higher current applications. These codes are standardized to facilitate easy identification and ordering.

Our platform offers express worldwide shipping and specialized technical support from experienced electrical engineers. We provide real-time pricing, detailed technical documentation for each article, and personalized assistance to ensure the correct selection for your application. Whether you need a standard three-stage switch or a custom configuration, our team is ready to help optimize your control systems.