Product Description

The DM1z-250L/2300 is an intelligent molded-case DC circuit breaker specifically designed for power infrastructure scenarios in Southeast Asia. Its core positioning is the "circuit safety core" for photovoltaic (PV) power plants, energy storage systems, and urban power grids.

Compliant with the IEC 60947-2 standard of the International Electrotechnical Commission (IEC), this product has passed severe damp-heat cycle and salt spray tests, making it perfectly adaptable to the high-temperature, high-humidity, and dusty climatic conditions in Southeast Asia. It integrates pre-designed high and low voltage protection logic, which can respond rapidly to overloads, short circuits, or abnormal leakage in DC circuits—providing reliable power safety guarantees for renewable energy projects, data center backup power supplies, and urban distribution networks.

As a key component of modular power solutions, the DM1z-250L/2300 supports seamless integration with prefabricated substation systems. It not only meets the centralized protection needs of large-scale PV power plants but also adapts to precision power distribution management for distributed energy storage cabinets. It is a core device that balances "safety and efficiency" in Southeast Asia’s energy transition.

 Features

High Reliability: Tackling Extreme Electrical Faults

• Strong Breaking Capacity: With a rated current of 250A and a rated service short-circuit breaking capacity of up to 70kA, it can instantly cut off fault currents equivalent to the simultaneous short circuit of 50 units of 10kW PV inverters—far exceeding the safety redundancy requirements of conventional power projects in Southeast Asia.

• Intelligent Dual Protection Mechanism: Adopts a combination of a thermal-magnetic release and electronic pre-alarm. It provides dual protection: long-time delay for overloads (adjustable 12-100s) and instantaneous protection for short circuits (4-14 times the rated current). With a response time as low as milliseconds, it prevents equipment burnout caused by high arc temperatures.

• All-Climate Adaptability: Features an IP55 protection rating enclosure (fully dustproof and protected against low-pressure water jets). Combined with UV-resistant materials and a wide temperature operating design (-40℃ to +70℃), it easily copes with extreme environments in Southeast Asia, such as heavy rains in the rainy season and high temperatures in the dry season.

Reducing Total Lifecycle Costs

• Remote Monitoring Capability: Equipped with a built-in MODBUS communication protocol interface, it supports real-time data collection (e.g., current, voltage, temperature) via RS485 bus or wireless modules. O&M personnel can perform parameter setting and fault diagnosis on the cloud, reducing on-site inspection frequency.

• Preventive Alarm Function: Customizable overload thresholds (50-100% of rated current) are available. When abnormal circuit current is detected, it sends an early alarm signal to avoid power generation losses in PV plants or power outages in data centers caused by sudden shutdowns.

• Modular Installation Design: Its compact structure is compatible with standard distribution cabinet dimensions and supports drawer-type plug-in installation. The replacement time of a single circuit is reduced to 15 minutes, significantly improving the rapid deployment efficiency of prefabricated substations.

Applicable Environment

• Altitude: 2000m and below;

• Ambient medium temperature: not higher than 40℃ and not lower than -5℃;

• Can withstand the effects of humid air;

• Can withstand the effects of salt spray;

• Can withstand the effects of mold;

• In a medium without explosion hazard, and where the medium contains no gas or conductive dust sufficient to corrode metals and damage insulation;

• In a place free from rain and snow intrusion.