HZ5B-20/3.BBB Eight-Position Combination Switch (Welding Machine Dedicated) This product is an eight-position (0-1-2-3-4-5-6-7) three-section rotary switch with a rated current of 20A, designed specifically for multi-level adjustment applications. It adopts a "0" position layout, providing complete isolation. According to the wiring diagram (X indicates ON), rotating to positions 1-7 activates different contact combinations (e.g., position 1: 1-2; position 2: 3-4; and so on), achieving seven circuit states. Rated voltage AC 380V/50-60Hz, standard configuration includes copper contacts for easy multi-wire connection in welding machines. Mechanical life 100,000 cycles, electrical life 30,000 cycles. It features a flame-retardant, high-temperature resistant shell, with thickened copper conductors and silver alloy contacts, ensuring reliability and long lifespan at 20A current.
Wiring Specifications: Terminal screw M4, wire range 1.0 – 1.5 mm², tightening torque 1.2 N·m.
Application Scenarios: Primarily used in welding machines as a fine-tuning switch for multi-level welding current or operating modes (such as manual welding/argon arc welding). It can also be used in industrial equipment requiring manual control with seven speed, power, or function selection.
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