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.
Alstom: MVAJ23, MVAJ053, MVAJ103