In modern power distribution networks, reliable load break switches are essential for ensuring operational safety and system flexibility. The PB3-10/630 Load Switch serves as a key component in medium-voltage applications, providing effective isolation and switching under normal operating conditions.
The PB3-10/630 is designed for use in 10kV, 50Hz three-phase AC networks. It is suitable for environments with ambient temperatures ranging from -30°C to +40°C, relative humidity up to 90%, and altitudes not exceeding 1000 meters. This switch is ideal for applications requiring load breaking, isolation, and earthing functions—commonly deployed in industrial plants, commercial complexes, and utility distribution systems where space and reliability are priorities.
With its simple three-pole common chassis design, the PB3-10/630 offers a balance of performance and affordability. It supports various mounting options—vertical, horizontal, or inclined—reducing installation complexity. As networks evolve toward modular and compact designs, such switches remain relevant for their durability, ease of maintenance, and compatibility with manual or motorized operating mechanisms.
Putai's PB3-10/630 combines robust insulation, proven mechanical endurance, and compliance with industry standards such as JB618-85. Its double-earthing and isolation functions enhance operational safety, while the clear break distance (≥125mm) ensures reliable disconnection. Suitable for currents from 400A to 1250A, this switch is a dependable choice for substations, RMU integration, and other medium-voltage setups.
Beyond standard models, Putai supports customization and supplies a range of compatible medium-voltage accessories to meet integrated system requirements. Whether for retrofit or new installations, our solutions are engineered for longevity and performance.
(Article content references online materials.)
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