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 6RX21 comprises a single 6R heavy duty attracted armature control relay with two operating coils wound on a single core.
Supervision is active with the circuit breaker in the open or closed position via the 52a & b auxiliary contacts.
Inbuilt time delays prevent false alarms due to normal delays in the tripping operation, circuit breaker state transition and voltage dips in the supply rail.
Under failure conditions a local hand reset flag operates and output alarm contacts change state.