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