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The most reliable, safe and robust Air-Insulated outdoor breaker

VSB Doghouse

VSB Station Breakers

Design for the North American conditions, CO7 Technologies VSB indoor and outdoor vacuum air insulated substation circuit breakers combine the proven medium voltage circuit breaker technology from Schneider Electric and CO7 with our industry-leading design. Engineered and built in our facilities in Montreal (QC) and Sherbrooke, Canada, the VSB Station Breaker meets or exceeds relevant IEEE/ANSI standards for indoor and outdoor circuit breakers at 27kV, up to 2500A.

Standards features  

  • Type FK2 operating mechanism  

  • Trip and close coil 

  • Visual circuit breaker status window 

  • Operation counter 

  • Mechanical position indicator 

  • External manual trio handle 

  • Necessary terminal and wairing 

  • Fused knife-switch control voltage disconnect 

  • Porcelain dry-type roof bushings 

  • Bolted-welded cabinet construction 

  • Permanent lifting eyes (4)

  • Adjustable galvanized legs (4)

  • Corrosion-resistant power

  • Cabinet heaters to prevent condensation

  • Additional heaters for -50ºC

  • Filtered ventilation

  • CSA rain-tested design

  • Reduced footprint

  • Internal arc type 2B as per IEEE C37.20.7 (12,5kA @1s, 25kA@1s, 31.5kA@0.5s)

  • Capacitive current switching tests C2 (600A)



VSB Technical Carateristics



The VSB meets the following standards:

  • IEC 62771-100: High-voltage switchgear and controlgear- Part 100: alternating-current circuit-breaker

  • IEC 62271-1: High-voltage switchgear and controlgear- Part 1: Common specifications

  • IEEE C37.20.7: Guide for testing metal-Enclosed Switchgear rated Up to 38 kV for Internal Arcing Faults

  • CSA C22.2 NO 94 : special-purpose enclosures industrial products

  • IEEE C37.082: Standard Methods for the Measurement of Sound Pressure Levels of AC Power Circuit Breakers



When specified, the VSB Station Breaker can maintain structural intergrity during and after a seisimic disturbance, as per IEEE 693 and TET-APG-N-0001-2013 (Hydro-Quebec).

Optional equipment and custom solutions

  • Terminal connectors for bushings 

  • Special Current transformers class 

  • Second trip coil 

  • Undervoltage trip device 

  • Seismic capability (IEEE 693 high level) 

  • Polymer bushings 


What can we do for you today?

Whether you need information about our solutions, a project requiring specialist support or any other requests, do not hesitate to contact us. We will get back to you very soon.

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2525 Rue Louis-A-Amos

Montreal - Quebec

H8T 1C3 - Canada

4035 Rue Letellier

Sherbrooke - Quebec

J1L 1Z3 - Canada

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