Products Single Function Auxiliary Relays
TR, XR and AR Auxiliary Relays

TR High Speed Tripping Relay
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XR351 Trip Circuit Supervision Relay
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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.
Application
- Tripping and auxiliary duties where immunity to capacitance discharge is not required
- Can be used for applications remote from the initiation signal
Features
- 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
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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.
Application
- 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
Features
- Low burden
- Consistent positive action
- Complies with appropriate requirements of IEC 60255
- Epsilon draw-out case
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