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We've been shiping these for a few years now, and the 31.5kA breaking capacty at 33kv is what most buyers come to us for — it handles short-circuit faults without much fuss, and the vacuum arc-extinguishing medium keeps maintenance low, which is pretty much why utilities prefer it over oil or SF6 types.
10,000 mechanicla operations is rated life, but in most field installations, you'll get more than that before the spring mechanism shows any wear, and the 100 full-load electricla interruptions are a conservative figure for a breaker that weighs roughly 150kg, give or take, and fits into an 800×600×1200mm panel footprint.
Actually, it's not ideal for high-altitude sites above 1000m without derating, so if your distribution system sits at elevation, you'll need to check with us first, but for typical substations at sea level, the 28kV AC insulation level is more than adequate.
The electric spring-operated mechanism means you'll need a control power source, usually 110V DC or 220V AC depending on the relay setup, and the three-pole design with overcurrent and earth fault protection is standard for 11kv to 33kv networks — our company can include a COA with each unit showing teh IEC 62271-100 compliance tests.
Lead time is about 20 working days or so for fixed-type breakers, and we usually have stock on the 1250A rating, but confirm before ordering if you need the 33kv variant in a hurry because that one moves a bit slower through production.
We typically set MOQ at 5 units for the 11kv/22kv/33kv models, but we can be flexible on smaller trial orders if you’re just starting out.
Lead time is around 30-45 days from order confirmation, depending on volume and current production schedule. We’ll give you a firm date once we check stock.
Yes, every unit comes with a test certificate and declaration of compliance to IEC 62271-100 and GB/T 1984. We can also send type test reports if your project requires them.
Our standard design is fixed at 1250A for these voltage ratings. For higher current ratings, we’d need to look at a different series — contact us with your specs and we’ll find the right fit.
Store it indoors in a clean, dry place with relative humidity below 95% and temperature between -25°C and +40°C. Keep it upright and avoid stacking anything on top to protect the vacuum interrupters.
