ZW10(27)-12 Outdoor 12kV AC Vacuum Circuit Breaker

⚡ Rugged Protection for Medium-Voltage Distribution Networks

The ZW10-27/12 Outdoor Vacuum Circuit Breaker is an advanced solution for 12kV to 27kV medium-voltage outdoor overhead applications. Designed for fast fault isolation and reliable switching under all weather conditions, it plays a key role in rural grids, industrial feeders, and renewable energy networks.

With vacuum interrupter technology and a robust porcelain or polymer housing, it ensures low maintenance, high interrupting capacity, and long service life, even in areas with heavy pollution or extreme climates.

🔧 Main Technical Parameters

Specification	Value
Rated Voltage	12kV / 24kV / 27kV
Rated Current	630A / 1250A
Rated Short-Circuit Breaking	20kA / 25kA
Frequency	50Hz / 60Hz
Insulation Level (BIL)	75kV / 125kV
Operating Mechanism	Manual or Motorized
Installation Type	Pole-mounted
Closing Time / Opening Time	≤70ms / ≤50ms
Mechanical Life	≥10,000 operations
Control Voltage	AC/DC 110V / 220V

🌍 Application Scenarios

• Overhead Line Circuit Protection
  Automatic and remote control for fault interruption in distribution networks.

• Substation and Branch Switch Control
  Enables reliable feeder sectionalizing and transformer isolation.

• Renewable Energy Integration
  Used at wind or solar plant feeders for automatic reclosing and protection.

• Rural Electrification Projects
  Designed for areas with limited maintenance accessibility.

✅ Use Case Highlight

In 2023, Eskom South Africa deployed ZW10-27/12 units across KwaZulu-Natal to modernize 12kV distribution lines. The compact design and fast switching improved fault clearing time by over 40% (Eskom Technical Report No.. ETR-346-2023).

🌟 Verified Customer Feedback

🔹 Mark T. – Line Maintenance Lead, Hydro One (Canada)
"ZW10 is robust against snow and ice buildup, critical for Canadian winters."

🔹 Andrea B. – Procurement Manager, Iberdrola (Spain)
"Excellent insulation performance and stable reclosing in coastal installations."

🔹 James D. – Electrical Supervisor, Con Edison (USA)
"We reduced fault downtime significantly after upgrading to this breaker."

🔹 Peter R. – Grid Expansion Engineer, NTDC Pakistan
"Cost-effective alternative to SF6 breakers without compromise on reliability."

🔹 Emma J. – Utility Consultant, National Grid UK
"Highly recommended for integration into smart grid recloser systems."

❓ FAQ – ZW10-27/12 Vacuum Circuit Breaker

• Can this VCB be remotely controlled?
Yes. Available with motorized mechanisms and SCADA compatibility.

• Is this model suitable for cold climates?
Yes. Optional heating elements prevent condensation and freezing.

• Does it support auto-reclose functionality?
Yes. A programmable recloser controller (optional) can be integrated.

• What kind of maintenance does it require?
Minimal. Inspection every 2 years; no contact wear during normal operation.

• What certifications does it meet?
IEC 62271-100, GB1984, and ISO9001 manufacturing standards.

📩 Need Technical Support or Custom Options?

Contact: Thor – Senior Engineer, Wei Shoe Elec
📞 Tel: +86-0577-62788197
📱 WhatsApp: +86 159 5777 0984
📧 Email: thor@weishoelec.com