The MVAJ205TA0804A is a model from the MVAJ series of tripping and control relays, originally manufactured by ALSTOM and now supported by GE Vernova. Here's a comprehensive breakdown:

 Product Overview

• Model: MVAJ205TA0804A
• Type: Hinged armature tripping relay
• Function: Interfaces protection relays with circuit breakers to provide:
  • High contact capacity
  • Multiple tripping outputs
  • Control, signaling, and interlocking functions
• Reset Type: Typically hand-reset, but may vary by configuration
• Burden Options: High or low burden selectable via external link
• Operating Voltage: AC or DC (varies by sub-model)

 Key Features

• High-speed operation with minimal contact bounce
• Immunity to wiring capacitance discharge
• Available in hand, electrical, and self-reset models
• Delayed cut-off for high-burden applications
• Built to high specifications for substation reliability