Product

Functions and Applications

DMW1 series air circuit breaker (hereinafter referred to as ACB) is suitable for AC 50Hz, rated operating voltage of 400V–690V AC, rated current 200A–6300A distribution network, primarily used for power distribution and power generation system protection. Provides protection against overload, undervoltage, overvoltage, current/voltage imbalance, short-circuit, and ground-fault conditions for line and power supply equipment.Through load monitoring and regional interlocking, the system realizes rational operation of the power grid.At the same time, it can also measure current; voltage; power; frequency; energy; power demand; harmonics; and other electrical parameters of the grid node. Circuit breakers also provide overload, undervoltage, and short-circuit protection for motors and generators.

The circuit breaker features intelligent protection controller with precise selective protection, avoiding unnecessary power outages while improving power supply reliability; continuity; and safety. Multiple communication interfaces enable 'four remote' functions to meet automation and control system requirements.

This series of circuit breakers can function as a disconnecting switch without an electronic trip unit and transformer. The circuit breaker is equipped with isolation functionality.Symbol:.

Suitable for power stations, factories, intelligent buildings, and other low-voltage distribution systems, and can also be used for infrequent motor starting operations.

This series of circuit breakers has been certified by the China Quality Certification Center (CQC).

Model and Its Meaning

Circuit Breakers That Meet the Following Standards:

■ Low voltage switchgear and control equipment - Part 1 : General ( IEC 60947-1 , MOD)

■ Low voltage switchgear and control equipment - Part 2: Circuit breakers ( IEC 60947-2 , IDT)

■ Low voltage switchgear and control equipment - Part 5-1: Control circuit appliances and switching elements - Electromechanical control circuit appliances

■ GB/T 2423 .4 Environmental tests for electrical and electronic products - Part 2: Test methods - Test Db : Alternating humidity and heat

■ GB/T 14092 .3 Mechanical products Environmental conditions: high altitude

■ GB/T 19608 .3 Classification of special environmental conditions - Part 3: Plateau

■ GB/T 20645 Special environmental conditions Low voltage electrical appliances for high altitude technical requirements

■ GB/T 20626 .3 Special environmental conditions Plateau electrical and electronic products - Part 3: Protection requirements for lightning , pollution and condensation

Installation Environment Requirements

The circuit breaker should be installed in a dry, dust-free , non-corrosive gas , no explosive dangerous media environment , can not be impacted. If the environment can not meet this condition , the protection level of the complete set of equipment should be improved accordingly. Specific requirements are shown in the following table: