SZW26/LW2620C YH5.3Y (also listed as SZW2620C/YH5.3Y) 20A 3Pole 7Position Rotary Cam Changeover Switch with Key, Color 20A YH5.3Y Product overview A 3pole, 7position rotary cam changeover switch with key control and voltmeter function, designed for reliable transfer switching and selector applications in electrical panels and control equipment. Universal switch type constructed with plastic housing and rated for common AC and DC control circuits. Key specifications Model: SZW26/LW2620C YH5.3Y (SZW2620C/YH5.3Y) Color: 20A YH5.3Y Switch type: Universal switch, rotary cam changeover with key Poles: 3 Positions: 7 Current rating: 20A (conventional heating current Ith 20A) Rated insulation voltage Ui: 660V Rated working voltage AC (Ue1): 440V, Rated working current Ie1: 20A (Use category AC15) Rated working voltage DC (Ue2): 240V, Rated working current Ie2: 1A (Use category DC13) Material: Plastic Pack quantity: 1 piece Key benefits Secure and controlled switching: Keyoperated selector prevents accidental or unauthorized operation, useful where controlled access is required. Flexible selection: Seven positions provide multiple selectable circuits or measurement points in a compact unit. Multipole reliability: Three poles allow simultaneous switching of multiphase lines or multiple conductors for coordinated transfer. Clear electrical ratings: Rated for up to 20A and insulation up to 660V, suitable for a wide range of control and distribution applications within these limits. Compact and easy to install: Plastic housing and common mounting dimensions make integration into panels and enclosures straightforward. Performance and compatibility Designed for AC control switching at up to 440V and up to 20A under AC15 category duties. Suitable for lowpower DC switching tasks up to 240V and 1A under DC13 category duties. Compatible with standard control panels, distribution boxes, switchboards, and instrument panels that accept rotary selector modules. Typical use scenarios Generator transfer and source selection: Use as a manual transfer switch or source selector to switch between utility and backup generator feeds in a control cabinet. Voltmeter or measurement selector: Select among multiple voltage measurement points for a single voltmeter or monitoring device without rewiring. Control and motor circuits: Provide selectable control states or circuit routing in industrial control panels where threepole switching is required. Installation notes Match circuit connections and load to the rated voltages and currents listed above. Install in accordance with local wiring practices and applicable electrical regulations. Ensure secure mounting and correct key management for applications requiring restricted access. This rotary cam changeover switch offers a practical combination of multiposition selection, key security, and clear electrical ratings for control, transfer, and selector applications in panelmounted installations.