This 1PC SZW26/LW2663 rotary changeover cam switch provides reliable, current control for multicircuit applications in industrial panels. With an ONOFFON operation, fourpole construction, and a 16terminal wiring layout, it is designed to simplify wiring and improve safety in demanding environments. Key benefits current and voltage capability: rated 63A at up to 660V AC, suitable for motor control, power distribution, and automation tasks. Fourpole, sixteenterminal design: enables synchronous switching of four conductors, reducing wiring complexity and ensuring coordinated isolation and changeover. Centeroff ONOFFON operation: offers a true off position between two on positions for safe maintenance, testing, and troubleshooting. Durable rotary cam mechanism: provides smooth actuation, repeatable performance, and long service life in repetitive switching applications. Practical for control panels and automation: compact enough for panel integration while delivering solid electrical performance, with model reference D404.4. Key attributes Model: SZW26/LW2663 Type: Rotary change over cam switch Electrical rating: 63A, 660V Configuration: 4 phases / 4pole, 16 terminals Operating sequence: ONOFFON Terminals: 16 Quantity: 1 piece Reference: D404.4 Applications and use cases Motor control in a fourconductor threephase system: use the fourpole switch to power multiple motorrelated circuits (for example, main drive, cooling, and auxiliary controls) with a single, centralized control element, while providing a centeroff position for safe maintenance. Powersource changeover in control panels: select between two supply sources for a machine or line, with the center OFF position allowing safe source isolation during servicing. Testing and prototyping benches: conveniently switch four test circuits or auxiliary circuits in sync, enabling quick setup changes without rewiring. Notes for installation and use Ensure compatibility with existing panel cutouts and mounting provisions for the SZW26/LW2663 model. Verify terminal torque and wiring practices align with local electrical standards and safety guidelines. Confirm that the 63A, 660V rating matches your load requirements and that the 4pole, 16terminal configuration supports the intended wiring scheme. This description reflects the product's brand, model, and features: 1 piece, SZW26/LW2663, 63A 660V, ON OFF ON, rotary change over cam switch, 4 phases, 16 terminals, D404.4.