The SZW26/LW2663 is a 1PC rotary change over cam switch designed for 3phase electrical control. It features an ONOFFON operating sequence, enabling simple switching between two circuits or power sources with a middle OFF position for safe maintenance. With a rating of 63A at 660V and 12 terminals, this switch provides robust 3phase control and flexible wiring options. D303.3 is part of the model specification for this unit. Key benefits Safe maintenance with a dedicated OFF position in the ONOFFON sequence. Easy source or circuit selection for 3phase equipment with a single control device. Reliable 3pole switching suitable for distributing or isolating threephase loads. Flexible wiring through 12 terminals to accommodate various wiring schemes. Suitable for moderatepower applications up to 63A and 660V. Compact rotary cam switch design aligned with SZW26/LW2663 specifications (D303.3). Key attributes Functionality: Rotary Change Over Cam Switch with ONOFFON operation Phases: 3 Phases Terminals: 12 Terminals Rating: 63A, 660V Configuration: ONOFFON Model details: SZW26/LW2663, D303.3 Quantity: 1 piece (1PC) Use cases and applications 3phase motor control in conveyors or packaging lines where switching between two power sources or feeds is required, with a safe OFF option for maintenance. Control panel isolation for HVAC or industrial equipment, enabling quick disconnection during servicing while providing a ready ON position for operation. Power routing in automated machinery, allowing simple transition between two loads or feeders within a single switch assembly. This description reflects the product's brand, specifications, model, and features, presenting a clear and practical overview for installing and using the SZW26/LW2663 in appropriate 3phase applications.