6RJ Series High Speed Tripping Relays

6RJ23 High Speed Tripping Relay



  • High speed operation
  • High burden
  • Hand reset contacts & flag
  • High security mechanical lock out
  • 5 or 10 contacts
  • Equivalent function to MVAJ23
  • 2HSM514 specification


The 6RJ23 is a high burden hand reset lock out relay suitable for application in high security circuit breaker tripping circuits & in particular where the initiating contact may be remote from the relay. The high burden may also allow the satisfactory operation of external series elements.

The 6RJ23 has a high burden to provide immunity to capacitance discharge currents. Power to the coil is cut off at operation or is economized to a low figure to provide thermal protection.

High burden tripping relays are designed to withstand the 10uF capacitor discharge test such that the relay will not operate when a 10uF capacitor charged to 120% of nominal operating voltage is applied across the coil of the relay.

The high speed relay coil is automatically protected from thermal damage by a series cut throat contact once the relay contacts have picked up & latched.

The contacts & trip flag indication operate on application of a control voltage. The contacts & flag are reset using the front panel push button.

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Railway rolling stock
Railway signalling