1、 Background: Comprehensive monitoring and protection are required for low-voltage distribution safety

In TT/TN systems below 0.4kV (core scenarios of low-voltage distribution in industrial, commercial, and civil buildings), hidden dangers such as leakage, wire overheating, overvoltage, and overcurrent are the main causes of electrical fires. Traditional monitoring devices often rely on single parameter monitoring, with scattered data and lagging alarms, making it difficult to fully cover fire risk points and unable to provide accurate data support for energy consumption management. Therefore, there is an urgent need for a comprehensive monitoring device that integrates multiple parameters, intelligent warning, and convenient management.

2、 Product Overview: Comprehensive Monitoring Solution for Low Voltage Distribution

ARCM200L-MU is an electrical comprehensive monitoring unit developed by Ankerui for low-voltage distribution systems below 0.4kV, which meets the requirements of GB14287.2/3-2014 standard. The product integrates microcontroller technology, with "fire prevention+energy consumption monitoring" as the core, which can capture key electrical parameters of the distribution circuit in real time, synchronously realize alarm, control, and recording functions. It is an integrated device for building electrical fire prevention, insulation aging estimation, and energy consumption management.

3、 Product features and parameters: precise, intelligent, and convenient

（1） Core Features

1. Full parameter monitoring: covering 3 channels of three-phase voltage, 1 channel of three-phase current, 4 channels of temperature, leakage current, power, electrical energy, etc., monitoring 2-63rd harmonic, with no hidden dangers missed.

2. Multi intelligent alarm: supports overvoltage, undervoltage, overload, overcurrent, overtemperature, leakage alarm, sound and light prompt+fault location, adjustable alarm threshold and action delay.

3. Flexible communication and control: 2.4G+2 RS485 communication, 5 DI inputs+2 DO outputs, seamless integration with management system, supporting linkage control.

4. Convenient operation and recording: Color LCD display, 6-key operation, storage of 20 alarm/fault/switch/system records, hierarchical control of permissions.

5. Embedded installation: compatible with standard openings, compact in size, and easy to install.

（2） Key parameters

（3） Product size

4、 Application scenario: Full coverage of low-voltage distribution scenarios

Suitable for TT/TN systems below 0.4kV, with core scenarios including:

• Commercial buildings: low-voltage distribution circuits for shopping malls, office buildings, and hotels;

• Residential buildings for civilian use: Distribution rooms in residential areas, main power distribution lines in corridors;

• Industrial plant: Low voltage distribution network for production workshops and auxiliary facilities;

• Infrastructure: Power distribution systems for public buildings such as schools, hospitals, and community service centers.

5、 Summary: Ideal choice for low-voltage distribution safety and intelligent management

ARCM200L-MU strengthens the fire prevention defense line with full parameter monitoring, supports energy consumption management with flexible communication and accurate data, and has the advantages of easy operation and flexible installation. Whether it's electrical fire warning or distribution system status monitoring, we can provide integrated solutions to ensure the safe and efficient operation of low-voltage distribution.