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Inquiry
They were having trouble with older oil-based breakers failing at the distribution board in the substation, especially during peak load shifts when the current spikes would cause nuisance trips and we'd lose production for half a shift while maintenance swapped contacts.
What this unit does is it handles those fault conditions with a vacuum interrupter that snuffs the arc in under 2ms of bounce time, so basically it clears the fault before the upstream protection even blinks, and we've had zero spurious shutdowns since installing the first batch.
The rated current on this one runs from 630A up to 3150A and breaking capasity is 20KA to 40KA depending on your configuration, with a peak withstand of 50KA to 100KA—the mechanical life is listed at 10,000 operations but our experience shows it'll do 15,000 or so before the contacts need looking at. Closing speed is 0.4 to 0.8 m/s and opening hits 0.9 to 1.2 m/s, and contact stroke is 9mm give or take 1mm, which is tighter tolerance than most equivalent units we've tested.
The energy-storage mechanism means you don't need a constant control power feed to keep it ready, which was a factor for our remote site where we lose auxiliary power occasionally, and protection functions cover overcurrent, overvoltage, and breaker failure monitoring.
We ordered the insert-mount version with 150mm phase distance (210mm is avaliable but that's for wider cabinets) and 3 poles, which is standdard for 12KV systems, and we usually have stock in about 30 days or so from the supplier but confirm lead time if you're running tight on a project deadline.
It's not ideal for environments above 1000m altitude without derating the voltge, and the ambient range of -10°C to +40°C means you'll need a heater if your panel sits in a cold warehouse during winter months.
MOQ is 1 unit for stock items, but if you need a specific current rating or phase distance, lead time is typically 15-25 working days depending on order volume.
Yes, it's certified ISO9001 and CE, plus it meets GB1984-2003. We'll include copies of the certificates with the packing list or email them before shipping.
Absolutely. The 3150A and 40KA configuration is available, and you can choose either 150mm or 210mm phase distance — just specify when ordering.
Store it indoors in a dry, clean place with ambient temperature between -10°C and +40°C, and keep it in its original packaging. Shelf life is about 2 years if stored properly.
The contact stroke is fixed at 9±1mm and closing speed at 0.4-0.8m/s per standard specs, but we can adjust the energy-storage mechanism settings slightly for special requests — just discuss with our engineering team.
