The MVAJ104RB0802A is part of the MVAJ series of tripping and control relays developed by Alstom.
The MVAJ104RB0802A is part of the MVAJ series of tripping and control relays developed by Alstom (now GE Grid Solutions). These relays are engineered for high-security circuit breaker tripping in power system protection schemes.
Key Specifications
Relay Type: Electrical-reset trip relay
Reset Method: Remote electrical signal
Burden: Supplied as high burden; convertible to low burden by removing external links
Operating Time: Typically 10–15 milliseconds
Contact Bounce: Negligible
Flagging: Hand-reset flag for fault indication
Delayed Cut-off: 40–60 ms delay available for high burden mode
Immunity: High resistance to wiring capacitance discharge
Functional Highlights
Direct Trip Coil Operation: Interfaces with protective relays to trip circuit breakers
Flexible Configuration:
External links between terminals 21–23 and 22–24 allow:
Reset inhibition
Burden selection
DC Operation: High burden configuration supports DC circuits
Supervision Compatibility: Works with relays like MVAX11 for enhanced reliability
