The SZW26-125/2GS is a heavy-duty, two-position (OFF-ON) rotary power disconnect switch with a rated current of up to 125A. Its core features a double-section structure, utilizing four sets of parallel silver alloy high-capacity contacts (1-2, 3-4, 5-6, 7-8) that operate synchronously. In the "ON" position, all contacts are connected, providing a low-impedance, low-temperature-rise path for high current; in the "OFF" position, all contacts are completely disconnected, providing a safe and clear electrical disconnection point. The product has a rated voltage of AC 440V (50/60Hz) or DC 240V, and features thickened copper conductors and a high-strength flame-retardant casing, specifically designed for high-current switching applications. Mechanical life is ≥300,000 cycles, and electrical life is ≥60,000 cycles (under rated load).
Application Scenarios
This switch is specifically designed for applications requiring direct switching control of high-current main circuits or as a critical component for total power supply control in high-power electrical equipment.
Heavy-duty equipment main power switch: Used as the main power input isolation switch or emergency disconnect switch for large industrial equipment (such as high-power electric furnaces, central air conditioning units, heavy-duty machine tools, and large rectifier/inverter devices).
High-current power distribution and protection: In power distribution cabinets of power distribution rooms, data centers, and large laboratories, it serves as a manual isolation switch for main incoming lines or high-capacity branch circuits (such as 125A level), used for safe isolation during equipment maintenance and repair.
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