VR circuit breakers are UL labeled and include a permanently mounted charging handle for manual charging and slow closing during testing.

The VR vacuum circuit breakers are designed for long life. The interrupter's copper chromium contact, hermetically sealed for life in a vacuum, are protected from external atmospheric influences.  Dust, moisture and all other contaminants are sealed out.  This state-of-the-art vacuum interrupter design is capable of 20 to 100 full fault interruptions (varies by rating).  

The high dielectric strength of the vacuum environment allows a very short clearing time during fault interruption to limit the energy dissipated into the arc.  Total fault clearing time is less than 3 cycles and contact travel is only 3/8 to 1/2-inch, depending on the ratings of the circuit breaker. The short stroke produces less mechanical shock to the operating mechanism.   

• 1200A, 2000A and 3000A
• 250, 350, 500, 750 and 1000 MVA Interrupting Capacity

• Medium voltage paralleling switchgear
• Metalclad^TM  switchgear

• Floor mounted breaker racking mechanism
• Standard epoxy supports or optional porcelain supports
• Aluminum or copper main bus
• Indoor NEMA 1
• Outdoor NEMA 3R
  • Walk-in
  • Non Walk-in