ALSTOM MVAJ13D1GB0780A Plug-in Trip Auxiliary Relay

Product Description

ALSTOM MVAJ13D1GB0780A is a draw-out electromechanical trip auxiliary relay of MVAJ13 series with low burden coil, originally GEC ALSTHOM, later AREVA and GE Vernova, compatible with Midos protection rack system. It is hand-resettable with mechanical trip flag indicator, fast operate speed and low consumption coil with volt-free contacts. Widely deployed in medium voltage protection panels to receive trip command from protection relays, drive circuit breaker trip coils, implement intertrip, fault alarm and blocking logic. Draw-out modular design, matched with MMLG01 test block for Midos secondary protection circuit. It is widely stocked spare for power plant and substation relay protection cabinets.

Specifications

• Model: MVAJ13D1GB0780A
• Brand: ALSTOM (Former GEC ALSTHOM / AREVA / GE Vernova)
• Type: MVAJ13 Draw-out Trip Auxiliary Relay, Low Burden DC Coil
• Coil Rated Voltage: 110~125VDC
• Contact Arrangement: 3NO + 1NC, volt-free contacts
• Reset Mode: Manual reset with mechanical trip flag
• Operate Time: Typical ＜10ms
• Short-time Contact Making Capacity: 30A (3s)
• Continuous Contact Rating: 1250VA
• Construction: Draw-out plug-in, for Midos standard rack
• Cover: Transparent front cover
• Net Weight: approx. 0.42 kg
• Dimension (W×H×D): 74 mm × 128 mm × 130 mm
• Operating Temperature: -20℃ ~ +60℃
• Storage Temperature: -40℃ ~ +85℃
• HS Code: 8536411000
• Certification: CE, IEC60255 compliant
• Remark: Obsolete original production, only surplus spare available; D stands for low burden coil

Application

1. Trip circuit expansion for medium voltage relay protection panels in substation & power plant;
2. Amplify protection output signal to actuate MV/HV circuit breaker trip coils;
3. Cross-circuit intertripping, fault alarming and protection interlock logic;
4. Cooperate with MMLG01 Midos test block to form complete secondary test circuit;
5. Retrofit and spare replacement for protection systems of petrochemical and metallurgy captive power stations.

MVAJ13 Series Models

• MVAJ13D1GB0780A: Low burden coil, 110-125VDC, hand reset with trip flag (this item)
• MVAJ13B1GB0780A: High burden coil variant, not direct interchangeable
• MVAJ13C1GB0780A: Self-reset type without manual flag
• MVAJ23D1GB0780A: Heavy-duty multi-contact frame model
• MVAJ11D1GB0780A: Economy version with fewer contacts