1PC SZW26/LW2663 63A 660V ON OFF ON Rotary Change Over Cam Switch 4Phases 16 Terminals D404.4 Key benefits Clear manual control: The ON‑OFF‑ON rotary cam configuration provides a center off position with two selectable ON positions for reliable manual changeover between circuits. electrical capacity: Rated for 63 A and up to 660 V to handle heavyduty control and power switching tasks. Flexible wiring: 16 terminals and a 4‑phase (4‑pole) arrangement allow switching of multiple conductors (for example three phases plus neutral or an additional control line). Durable mechanical action: Cam switch design delivers positive position detents and repeatable switching for consistent operation in control panels and machinery. What this switch does and why you need it Acts as a compact, manual changeover device to select between two power sources or circuit paths with a safe center off position. Solves common problems like isolating a load for service, selecting a backup supply, or directing power and control signals without rewiring. Useful where straightforward, visible manual selection is preferred over automatic transfer systems. Key attributes Model: SZW26/LW2663 Quantity: 1PC Rated current: 63 A Rated voltage: 660 V Positions: ON – OFF – ON (three positions with center off) Poles / phases: 4Phases (4 poles) Terminals: 16 terminals for flexible connections Type: Rotary change over cam switch Product code / identifier: D404.4 Typical applications Generator or backup source selection: Manually switch a load between two supply sources with a neutral or control conductor included. Motor and machine control: Select operating circuits or isolate equipment for maintenance in control panels for industrial machinery. Test benches and distribution panels: Reconfigure circuits quickly during testing or troubleshooting without changing wiring. Installation and compatibility notes Designed for panel or enclosure mounting where a rotary cam switch with multiple poles and multiple terminals is required. 4‑pole/16‑terminal layout supports switching several conductors in one compact device; plan wiring according to the application (for example three phases plus neutral or three phases plus control). Ensure installation and wiring comply with local electrical codes and that the switch rating (63 A, 660 V) matches system requirements. Operational tips Use the center OFF position for safe isolation before performing maintenance. Confirm terminal numbering and wiring diagrams during installation to ensure correct changeover behavior. Regularly inspect mounting and terminal tightness in vibration environments. This SZW26/LW2663 cam switch offers a straightforward, reliable manual solution for multiconductor changeover tasks where a clear ON‑OFF‑ON selection and robust 63 A / 660 V rating are required.