MVAJ101RA0800A ALSTOM

Model: MVAJ101RA0800A
Brand: Alstom (AREVA/GE Grid Solutions lineage)
Series: MVAJ 05/10/20 Tripping & Control Relays
Core Function: High-speed self-reset tripping for protection schemes
Type: Auxiliary tripping relay (self-reset, hand-reset flag option)
Key Specs: 10 contacts, high/low burden selectable, operate time <20 ms typical, reset 20 ms

Alstom MVAJ101RA0800A is a self-reset tripping relay from the MVAJ series, used widely in utility and industrial protection panels to interface protection relays with circuit breakers. It accepts a trip signal and provides multiple contact outputs for breaker tripping, alarm, and interlock duties.

Choose this when you need fast, reliable multi-contact operation with negligible bounce. High-burden mode handles long cable runs or capacitance discharge; switch to low burden for panel-internal use. Typical pickup is clean under 20 ms, and the economizing circuit cuts holding power after 40–60 ms in high-burden config. Verify exact voltage rating and link position on your unit before applying—datasheet shows ESI 48-4 compliance for burden classes.

Handles high capacitance discharge (10 µF @ rated voltage typical in high-burden mode) without false operation
Test report provided: power-on, contact continuity, coil resistance, 24-hour bench run on simulator rack
Clear difference vs basic interposing relays: 10 contacts allow full breaker close/trip/alarm without extra relays in many schemes
Not recommended for applications needing delayed drop-off—use MVAJ102 or similar if 2.5 s delay required
Contacts rated for 10,000 loaded operations minimum per GE Grid Solutions reference
Passed incoming visual/serial check, functional test (contact sequencing, no chatter), insulation >10 MΩ at 500 V