Why Is the 40.5KV Switch Recloser a Smart Fit for Today’s Power Distribution Needs?

At Zhejiang SanGao Electric Co., Ltd., we’ve spent years supplying high-voltage equipment to both utility companies and private contractors. Among all the products we’ve built and shipped, the 40.5KV Switch Recloser has stood out for its long-term reliability in the field. It’s used widely in medium-voltage outdoor power systems, and over time, it has proven to be a practical and stable solution across different climates and grid conditions.

We designed this recloser to handle a wide range of grid demands—everything from regular load switching to short-circuit protection. It’s built for 50Hz and 60Hz three-phase systems and is especially useful in outdoor grids ranging from 10kV to 35kV. Some of our clients use it in city infrastructure projects, while others rely on it for rural grid upgrades. In either case, the 40.5KV Switch Recloser plays a key role in helping crews isolate faults quickly and restore service with minimal manual intervention.

The first thing I always mention to customers is the recloser’s structure. We use outdoor-grade epoxy insulation for each phase column, wrapped with silicone gel. That means no gas, no oil, and no internal pressure risks. It holds up well against UV exposure, temperature shifts, and long-term weathering. The mechanical drive uses a compact motor—about 30W—and we include manual handles so local crews can operate the unit on-site if needed.

We’ve also tested its performance under short-circuit conditions, and the results have been consistent. The 40.5KV Switch Recloser can interrupt up to 25kA with no issue. The sealing design is solid, and we use ceramic sleeves to maintain the right insulation distance across all terminals. It’s these small structural choices that lead to fewer on-site issues later. In fact, many of our clients choose this model because they need something that can run maintenance-free for years at a time.

Right now, this product is being used in power networks across several continents. We support customers from equipment selection through installation, and we’re always available to provide backup if needed. Our goal with every order is simple: ship a unit that works exactly as promised.

If you're working on a distribution network and looking for something dependable, reach out to our team at Zhejiang SanGao Electric Co., Ltd. We’ll help you find the right configuration for your line and talk through any site conditions you need to consider. The 40.5KV Switch Recloser is already helping grids run more smoothly—let’s see how it can work for yours.