6RX Series Trip Circuit Supervision Relays

6RX12 Trip Supply Supervision Relay



  • Low burden
  • Contacts picked up for healthy supply condition contacts
  • Slug time delay
  • Hand reset flag indicator
  • 2 C/O contacts standard
  • Draw out case
  • Equivalent function to MVAX12
  • 1TM11 specification


The operating element for the 6R MATRIX supervision relay functional elements are designated 6RX & are based on our 6R Series relays.

The operating element of the 6RX12 comprises a single 6R heavy-duty attracted armature control relay with a single operating coil & delay slug. The relay is normally operated to indicate a healthy trip circuit supply while a slug is fitted to provide a delay on drop out & avoid nuisance tripping due to transients.

Under healthy conditions, the coil is energized & if the supply fails, the relay will drop out after a short time delay to initiate a supply fail alarm.

Contacts are constructed from silver / copper alloy, shaped & positioned to ensure very reliable, low resistance operation. Over travel of the contacts during each operation causes a wiping action ensuring a clean “make”.

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Railway signalling