Although this product range is now obsolete from full manufacture, we pride ourselves on having the ability to provide a full spares, service & repair service for all Hawker Siddeley Switchgear heritage products.

The retrofit option for this breaker is the VMV vacuum circuit breaker




We can offer a range of spares for the VSI Range to meet your requirements via ourselves or an approved third party, including:

  • Fixed Contacts
  • Moving Contacts
  • Tank Gaskets
  • Arc Control Pots
  • Vent Seals
  • Trip coils and spring release coils

Tools Available

Tools available include:

  • Charging Handle

Mod Kits

  • VSI Incident Check List

Please contact our Customer Support team with the serial number of your VSI / VTD units and they will be more than happy to offer the necessary checklist for your equipment, please download a copy of the VSI Incident Checking Procedure here.

  • Moving Poker Contacts

For any OCB in the /1 range of circuit breakers, dated pre 1972 the steel tipped moving contact must be changed unless it can be demonstrated through recorded maintenance that these contacts have been changed since 1972.

  • VT Stress Shields

All enquiries should be forwarded to the Spares Department at spares@hss-ltd.com or click here to request a quote.

Alternatively click on “Key Contacts” and speak to one of our experienced sales team.



get in touch

Contact HSS

+44 (0)1495 223001

+44 (0)1495 223001

+ 61 7 3888 2333

what we've done

case studies

ENWL Case study Wilmslow retrofit ENWL approved

SSEN - Horizon Framework