Transfer Switch SZW26/LW26125 Color: 125A D202.2 Overview A compact 3position cam transfer switch for forward and reverse generator or source transfer. Suitable for 1 to 4 phase systems, the switch is designed for reliable manual or semiautomatic changeover in industrial and commercial electrical panels. Key benefits Reliable source transfer: Three cam positions provide clear selection for forward, reverse, and neutral/off states to simplify changeover between power sources. current capacity: Rated conventional heating current of 125 A with rated working currents suitable for multiple use categories, supporting common motor and load types. Robust shortcircuit performance: shorttime withstand current and making capacity reduce risk of damage during transient faults. Flexible compatibility: Accepts AC 240 V and AC 440 V systems and fits 1 to 4 phase installations, making it suitable for a wide range of electrical setups. Easy integration: Compact plastic housing and standardized mounting make panel integration straightforward without extensive modifications. Technical specifications Model numbers: SZW26125, D101.1, D202.2, D303.3, D404.4 Current rating: 125 A Phases supported: 1 to 4 Rated working voltage Ue: AC 240 V and AC 440 V Rated insulation voltage Ui: 660 V Rated impulse withstand voltage Uimp: 4 kV Conventional heating current Ith: 125 A Use category AC23A rated working current Ie: 90 A Use category AC3 rated working current Ie: 75 A Use category AC4 rated working current Ie: 30 A Rated shorttime withstand current Icw: 1080 A for 1 s Rated shortcircuit making capacity Icm: 1523 A Material: Plastic housing Practical applications Generator changeover for backup power: Use as a manual or camactuated transfer switch to select between mains and generator power in standby systems. Motor control and direction switching: Suitable for industrial motor circuits where forward and reverse source selection or isolation is required. Building services and pumps: Apply in HVAC, pumping stations, and facility power distribution panels to manage supply switching and maintenance isolation. Installation and operation Threeposition cam allows straightforward selection and positive mechanical detents for each position. Plastic housing reduces weight and simplifies panel mounting. Compatible with standard control wiring and panel layouts for 1 to 4 phase systems. Consult wiring diagrams and local electrical codes for correct installation and protection coordination. Available models and configurations listed above cover common phase and mounting options for straightforward selection during system design or retrofit.