The HZ5B-20/3.EEE is a five-position, three-section combination switch. This product is a five-position (0-1-2-3-4) three-section rotary switch with a rated current of 20A, specifically designed for equipment requiring four operating positions plus a safety isolation position. Specific functions correspond to the wiring diagram (X indicates ON). Rated voltage is AC 380V/50-60Hz. It adopts a copper contact design with inserts, facilitating multi-wire parallel connection in welding machines and other equipment, significantly improving wiring efficiency and reliability. Mechanical life is 100,000 cycles, and electrical life is 30,000 cycles (AC-23A/AC-3/AC-4 load). It features a flame-retardant, high-temperature resistant shell, with thickened copper conductors and silver alloy contacts internally, ensuring reliability and long lifespan at 20A current.
Application Scenarios: Used in welding machines as a precise selection switch for four welding current positions or operating modes (such as manual welding/argon arc welding/spot welding). Due to its clear position selection logic, it is also widely used in industrial equipment control panels requiring four-speed adjustment, graded heating power, or multi-position selection. The middle "0" provides security isolation and facilitates equipment maintenance.
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