High-speed tripping relay
RXMS 1 is often used in combination with heavy-duty and multi-contact auxiliary relays, e.g. RXME 1, RXME 18 and RXMH 2. This provides high-speed tripping contacts from RXMS 1 and contacts from the slower heavy-duty relays are used in parallel to provide current interrupting capability. This is often used as an accessory to protective relays in a station for secure operation of the included breakers and allows the trip circuit current interruption even if there is a breaker failure.
The RXMS 1 relay is designed for dc supply.