ALSTOM MVAJ21L1GB0771B Auxiliary transmission relay module
Specific Parameters
Rated Operating Voltage 110VDC, 220VDC, 110VAC/220VAC 50/60Hz
Contact Configuration Multiple Changeover Contacts, Special Heavy-duty Contact Combination
Rated Contact Load 5A/250VAC, 5A/125VDC
Operating Time ≤12ms at Rated Voltage
Reset Mode Optional Manual Reset + Automatic Reset
Dielectric Withstand Voltage 2kVAC/50Hz/1min
Operating Temperature Range -20℃ to +60℃
Relative Humidity 5% to 95%, Non-Condensing
Protection Class IP20
Mounting Type Standard DIN Rail Mounting, Panel Opening Mounting
Mechanical Life ≥100,000 Operations
Product Performance
Action Response Performance: Adopts high-precision attracted armature drive structure, with action response time ≤12ms at rated voltage, precise action without jitter and contact bounce, can quickly complete signal transfer and command execution, eliminate control failure caused by command delay, and ensure rapid system response and safe equipment isolation under fault conditions.
Contact Load Performance: Equipped with customized heavy-duty changeover contacts, the rated contact load capacity adapts to the needs of power and drive circuits, with stable contact and reliable on-off, no overheating and ablation during long-term on-load operation, can drive multiple circuits and actuators simultaneously, meeting multi-point output needs of complex interlock control scenarios.
Power Supply Compatibility Performance: Supports AC/DC dual-system universal power supply, wide voltage range adapts to different on-site power supply conditions, built-in voltage stabilization and rectifier circuit, power supply fluctuation does not affect the normal action of the module, no additional power supply adapter device required, strong on-site deployment compatibility.
Anti-interference Stability Performance: Has excellent anti-electromagnetic interference, anti-surge impact and anti-capacitance discharge capabilities, can resist harmonics, stray signals in power systems and electromagnetic interference from drive equipment, eliminate maloperation and refusal to operate, sturdy and durable mechanical structure, no jamming and performance attenuation during long-term operation.
Insulation Safety Performance: Complete electrical isolation between coil circuit and contact circuit, meeting 2kVAC power frequency withstand voltage standard, effectively blocking high and low voltage side signal crosstalk and high voltage breakdown risk, protecting back-end relay protection devices and control equipment from damage, improving the safety level of the overall control circuit.
Environmental Adaptability Performance: Strong wide-temperature environmental adaptability, can operate continuously for a long time in extreme industrial and power environments from -20℃ to +60℃, dust and vibration resistant, adapting to working conditions without constant temperature control such as substations, motor control rooms and industrial power distribution rooms, stable and trouble-free operation all-weather.
Installation and Maintenance Performance: Supports two mounting methods: DIN rail quick mounting and panel fixed mounting, modular compact structure, standardized wiring interface, simple installation and commissioning process, built-in operation and fault status indicator to visually monitor working status, convenient later maintenance and replacement, reducing operation and maintenance costs.
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