Product Overview

• Part No: MVAW11B1AB0513A
• Brand: ALSTOM

• Category: Trip Circuit Supervision RelayMVAW11B1AB0513A belongs to ALSTOM classic MVAW series plug-in supervision relay. It continuously monitors the integrity of circuit breaker trip circuit, detecting trip coil damage, blown fuses, wiring breakage and auxiliary contact faults. When abnormal conditions are detected, the relay outputs remote alarm contact to prevent protection failure during system faults. Equipped with transparent protective cover and standard plug-in housing, it serves as standard spare equipment for secondary protection cabinets in thermal power plants and high-voltage substations.

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Core Features

• Continuous monitoring of trip circuit continuity for breaker control loop safety
• Built-in anti-chatter delay function to avoid false alarms during breaker operation
• Transparent front cover for status observation and convenient circuit inspection
• Standard plug-in modular design for fast on-site replacement
• Reliable changeover dry contacts for remote fault alarm signals
• Surge suppression circuit, strong immunity to substation electromagnetic interference

• Passed EMC, vibration and thermal cycling reliability long-term operation tests

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Technical Specifications

• Auxiliary Supply: 110V/220V DC
• Rated Frequency: 50/60Hz
• Operating Temperature: -20°C ~ +60°C
• Storage Temperature: -40°C ~ +85°C
• Installation: Chassis plug-in mounting

• Front Protection Class: IP40

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Compatibility & Application

• Matches ALSTOM legacy secondary protection cabinet system
• Widely used in thermal power plants, captive power stations and distribution substations
• Applied for circuit breaker trip circuit supervision, protection system health monitoring and fault alarm interlock