Areva MVAJ205TB0010A is a 24–27 V AC/DC protection relay in the AREVA/GE Vernova MVAJ family that interfaces protection relays with circuit breakers in substations. It accepts a 24/27 V auxiliary supply (AC or DC) and is designed for auxiliary control and tripping functions, with a make-and-break rating of 1250 VA and a maximum load of 5 A at up to 300 V. As the 205 variant in the MVAJ 05/10/20 series, it supports energizing protective signaling and autoreclosing equipment from remote pilot circuits. Typical applications include coordinating protection relays with circuit breakers and remote trip control in medium- to high-voltage protection schemes.
