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Basically what you’re getting here is a fixed-mount vacuum bottle that switches currents cleanly without any oil or SF6 mess—it just arcs in a vacuum and extinguishes itself in milliseconds, so maintenance is pretty minimal compared to older gear.
The standard rating we see most often ordered is 1250A continuous at 11kV, but you’ll also find it in 22kV and 33kV configurations for different bus voltages, and the breaking capacity is what you’d expect form a class E2 breaker—it handles repeated short-circuit faults without degrading contact surfaces. That contact alloy is something we’ve used for years; it’s high-conductivity erosion-resistant nickel-chrome blend that doesn’t pit easily.
One thing buyers don’t always ask about upfront is the operating temperature range, which is -25°C to +40°C with 95% humidity, so it works in most indoor substations and industrial plants, but altitude is capped at 1000 meters standard—if you’re above that, our company have a derated version (just specify it). Also, it’s seismic intensity 8, which matters if you’re installing in earthquake zones, though it’s not meant for outdoor pole-mount applicaion without a weatherproof enclosure.
For ordering, the electric mechanism is wired for standard auxiliary voltages (usually 110V or 220V), and the overcurrent and overvoltage protection functions are built into the control unit, not the interrupter itself. Lead time is typically 4 to 6 weeks for a batch of 10 units or so, but we usually have stock on the 11kV version—confirm lead time if you need the 33kV variant.
Anyway, it’s better than many competitive units for consistent arc quench because vacuum gap stays stable over thousands of operations, and the M2 mechancial life classification means you’ll get roughly 30,000 operations before any contact wear becomes an issue. But the electrical life is the spec that matters more for utility grids—E2 class handles full rated breaking current for at least 100 operations, which is tight compared to some older designs.
MOQ is 5 units for stock models, but we can negotiate lower quantities for first-time orders. Lead time is typically 25-30 working days from order confirmation, depending on voltage variant and quantity.
Yes, we include ISO9001 and CE certificates with every shipment. CCC certification is also available for orders destined for China or markets that require it.
The standard rating is up to 1000m, but we can adjust the design for higher altitudes — just let us know the exact elevation and we'll confirm the derating or modifications needed.
We use plywood crates with internal foam padding and waterproof lining. Each pole is secured individually, and the operating mechanism is braced to prevent shifting during transit.
Yes, all voltage variants (11kV, 22kV, 33kV) use the same high-conductivity erosion-resistant alloy for the contacts. This ensures consistent breaking performance and long electrical life across the range.
