Account
Inquiry
So you're setting up or upgrading a medium-voltage distribution network — maybe a factory floor, a data center, or a substation — and you need something that can handle daily switching and also trip fast when things go wrong, we've been supplying these for years to exactly those kinds of projects.
It's 12kV nominal with a power frequency withstand of 42kV and lightning impulse at 75kV, which basically tells you the insulation can take a hit, and the vacuum interrupter means no oil or SF6 to deal with, just clean arc extinction inside a sealed bottle.
Most buyers go with the 1250A or 2000A for typical feeder duties, but if you're protecting a transformer secondary you might want the 3150A — it's teh same footprint, same spring mechanism, just bigger contacts and more copper in the path.
What it does is give you 10,000 mechancial operations and 20,000 electricla at rated current, so you're not swapping breakers every couple of years, and the closing speed is 0.4 to 0.8 m/s while opening is a bit faster at 0.9 to 1.2 m/s, which keeps the arc energy low and contact wear manageable.
When you order we'll send the breaker with the operating mechanism pre-installed — spring energy storage type — and you'll get the CE and ISO paperwork with it; we usually have fixed or withdrawable in stock, but check lead time on the withdrawable chassis (about 20 days or so).
One thing people don't always think about is the ambient range — it's -10°C to +40°C, so if your site gets colder than that you'll need a heater kit, otherwise the mechanism oil gets sluggish and you might get a slow close.
The VS1-12 comes in six rated current options: 630A, 1250A, 1600A, 2000A, 2500A, and 3150A. You can pick the one that matches your load requirements.
We typically require a minimum order of 1 unit for the VS1-12, but for large volume orders we can discuss better pricing and lead times.
Yes, the VS1-12 is certified with CE and ISO9001, so you can count on it meeting international quality and safety standards.
Absolutely, we offer both fixed and withdrawable versions. Standard lead time for a withdrawable unit is around 4-6 weeks, depending on the quantity and current rating.
It operates fine in ambient temperatures from -10°C to +40°C with relative humidity up to 95% daily average. For storage, keep it in a dry, clean environment within that range to avoid issues.
