MVAJ053BA0801B ALSTOM

Model: MVAJ053BA0801B
Brand: ALSTOM (now GE Vernova)
Series: MVAJ 05
Core Function: Hand-reset tripping relay for circuit breaker lockout
Type: High/low burden auxiliary relay
Key Specs: 4NO + 1NC contacts, 110-125 V DC/AC operate, operate time <10 ms typical

Key Technical Specifications

Operate voltage range: 110-125 V DC (high/low burden configurable)
Contact arrangement: 4 normally open + 1 normally closed
Reset method: Hand reset (manual push-button)
Burden: High burden standard (link configurable to low); high provides capacitance discharge immunity
Operate time: <10 ms (high speed tripping)
Contact rating: Typically 10 A make/break at 110 V DC (verify per OEM datasheet for exact inductive load)
Operating temperature: -25 to +70 °C typical for series
Mounting: Midos size 2 case (drawout)
Burden cut-off: Internal break contact reduces to zero after operation in high burden hand-reset
Insulation: >10 MΩ at 500 V (standard test)

Product Introduction

Hand-reset tripping relays like the ALSTOM MVAJ053 often sit between protection relays and multiple circuit breakers in substations. The MVAJ053BA0801B provides lockout functionality after a trip command, preventing automatic re-energization until manual inspection.

Choose this variant when you need reliable hand-reset in transformer or busbar protection schemes. It delivers high contact capacity and fast operation under 10 ms, with configurable burden to suit distributed tripping circuits where capacitance discharge is a concern. Always cross-check the nameplate voltage and link position against your panel drawings before installation.