Product Features

• Equipped with vacuum interrupter for arc extinction

  The vacuum interrupter maintains high‑vacuum internal condition, acting as insulation and arc‑extinguishing medium during live operation. When contacts are separated under load by the operating mechanism, vacuum arc is generated between contacts and extinguishes at current zero‑crossing to interrupt circuit current.
• Adopts air‑silicone rubber and epoxy resin composite insulation; fixed‑pole type is also available.
• Fully sealed within stainless‑steel or carbon‑steel housing. Excellent sealing performance enables explosion‑proof, anti‑condensation and anti‑pollution functions.
• Two‑phase or three‑phase current transformers for protection, measurement or metering can be fitted inside the switch.
• Multi‑ratio current transformers: standard triple ratios are 50 100 150/5, 100 200 300/5, 200 400 600/5. Custom ratios can be supplied according to customer load conditions. Protection accuracy class: 10P10; measurement & metering accuracy class: 0.2S, 0.2, 0.5.
• Dry‑type voltage transformer can be installed internally to supply operation power and voltage signal sampling.
• Flexible solution with reserved interfaces for distribution network automation, facilitating smart grid upgrade.

• Optional disconnector

  Reliable mechanical interlock is provided between the circuit breaker and single‑side / double‑side / top‑mounted disconnector. The disconnector cannot perform close or open operation when the circuit breaker is closed.
• Housing: stainless steel or ordinary carbon steel. Inrush current controller (2‑phase or 3‑phase, depending on CT quantity) is installed inside to provide overload, short‑circuit and instantaneous overcurrent protection. Current threshold and time delay are adjustable.
• Operating Mechanism

  CT‑powered spring mechanism, supports both manual and electric operation.