Products Single Function Auxiliary Relays

TR, XR and AR Auxiliary Relays

TR High Speed Tripping Relay
TR High Speed Tripping Relay
XR351 Trip Circuit Supervision Relay
XR351 Trip Circuit Supervision Relay

Type TR high speed tripping relays are a range of voltage operated, multi-contact, attracted-armature relays, complying with the appropriate requirements of IEC 60255. A wide range of models is available to meet the requirements of the electrical power sector.


  • Tripping and auxiliary duties where immunity to capacitance discharge is not required
  • Can be used for applications remote from the initiation signal


  • High speed, positive action
  • Robust design for long, reliable service life
  • Supplied in Epsilon draw-out type case
  • Can be supplied both in E2 and E4 casing


XR351 is an electro-mechanical relay for supervision and monitoring of a trip circuit, during both open and closed CB position, as well as for preclosing supervision. The XR351 has 3 attracted armature elements. It incorporates a time delay on de-energization, to keep the relay in an operated condition, during temporary reduction in the battery voltage.


  • Supervision and ensuring the integrity of the trip circuit of a breaker
  • Continuous supervision, during both, open and closed position of circuit breaker
  • Preclosing supervision to prevent circuit breaker from being closed where the trip relay has not been reset


  • Low burden
  • Consistent positive action
  • Complies with appropriate requirements of IEC 60255
  • Epsilon draw-out case


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Winnipeg, Canada