DW1 Air Circuit Breaker Manufacturer

DW1 Air circuit breaker

Ratedinsulation voltage Ui(M):1000

Rated impuse withstand voltage Ulimpk):12

Power fequencywithstand votageraio V)1min:5000

Description

Product representative image

Scope of Application

DW1 series intelligent universal circuit breaker (hereinafter referred to as circuit breaker). Suitable for AC 50Hz/60Hz, rated voltage up to400V(690V) and below, rated current 200A-6300A distribution network, used to distribute power and protect lines and power equipment from overload,undervoltage,short circuit,single-phase grounding and other faults.Circuit breaker has intelligent protection function,selective protection is accurate,can improve the reliability of power supply,avoid unnecessary power failure at the same time with open communication interface,can be carried out "four remote"to meet the requirements of the control center and automation system circuit breaker pulse resistance of 8000V at sea level 2000 meters (different altitudes according to the standard correction,The circuit breaker without intelligent controller and sensor can be used as an isolator,marked as“”

The circuit breaker complies with standards such as GB/T14048 .2 "Low-voltage Switchgear and Control Equipment Low-voltage Circuit Breaker"and IEC60947-2 "Low-voltage Switchgear and Control Equipment Circuit Breaker".

Application Scenarios

The DW1 Series Air Circuit Breaker (ACB) is designed for low-voltage power distribution systems requiring high current carrying capacity, reliable protection and intelligent power management. Equipped with an advanced electronic protection unit, it provides comprehensive protection against overload, short circuit, undervoltage, phase loss and ground fault conditions, ensuring the safe and stable operation of electrical networks.

The DW1 series is widely used as the main incoming breaker, bus coupler breaker or feeder breaker in low-voltage distribution systems. Its intelligent monitoring and communication capabilities make it particularly suitable for modern power distribution applications requiring real-time status monitoring and remote management.

Industrial Power Distribution

Widely used in manufacturing plants, petrochemical facilities, mining operations and industrial automation systems where high-current distribution and reliable equipment protection are critical.

Commercial and Public Buildings

Suitable for shopping malls, office buildings, hospitals, hotels, airports and exhibition centers, providing dependable protection for building power distribution networks.

Data Centers and Communication Facilities

Applied in data centers, telecommunication stations and critical infrastructure projects where uninterrupted power supply and intelligent monitoring are required.

Power Plants and Substations

Installed in power generation facilities, substations and utility distribution systems as the primary switching and protection device for high-capacity circuits.

Renewable Energy and Energy Storage Systems

Suitable for photovoltaic power stations, battery energy storage systems and microgrid projects requiring intelligent power distribution and remote control functions.

Smart Power Distribution Systems

Ideal for intelligent buildings, industrial IoT platforms and energy management systems where communication, data acquisition and remote operation are required.

Normal working conditions

◎Ambient air temperature

The upper limit value shall not exceed +40℃,the lower limit value shall not be lower than -5 ℃,and the average value of 24h shall not exceed +30℃;

Note:The lower limit is -10℃ or -25℃ operating conditions;

Operating conditions where the upper limit exceeds +40 °C or the lower limit is below -10 °C or -25 °C;

The elevation of the installation site does not exceed 2000m:it should be indicated first when ordering.

◎Atmospheric conditions

The relative humidity of the atmosphere does not exceed 50%when the surrounding air is +40℃,and the relative humidity can be higher at lower humidity,the monthly average maximum relative humidity of the wettest month is 90%,while the average minimum temperature of the month is +25℃,and considering that the condensation on the surface of the product due to temperature changes exceeds the specified requirements should be negotiated with the company.

Protection class: IP30;

Pollution level: Ⅲ;

Usage category:Class B orA;

Installation category: Circuit breakers with rated operating voltage of 400V(690M) and below and undervoltage release, primary coil of power transformer for installation category IV;Auxiliary circuit and control circuit installation category is Ⅲ.

Installation conditions:The circuit breaker shall be installed in accordance with the requirements of this manual,and the restraightening inclination of the circuit breaker shall not exceed 5 degrees (the tipping degree of the mine circuit breaker shall not exceed 15 degrees).

Structural features

Advanced Electronic Trip Unit

Equipped with an intelligent protection controller providing accurate overload, short-time delay, instantaneous short-circuit and undervoltage protection.

Comprehensive Protection Functions

Optional features include ground fault protection, phase-loss protection, overvoltage and undervoltage monitoring, ensuring enhanced system safety.

Intelligent Monitoring and Communication

Supports communication interfaces for remote monitoring, status indication, fault diagnosis and integration with automation systems.

High Breaking Capacity Design

Optimized contact system and arc extinguishing structure provide reliable interruption of high fault currents and improved operational safety.

Real-Time Measurement and Display

Capable of monitoring current, voltage, active power, reactive power, energy consumption and other electrical parameters.

Modular Accessory Configuration

Can be equipped with shunt release, undervoltage release, motor operating mechanism and intelligent controller modules to meet different application requirements.

Remote Operation Capability

Supports remote opening, closing and status feedback functions, making it suitable for unattended substations and smart distribution systems.

Robust Mechanical Structure

Designed for long mechanical and electrical life with reliable performance under demanding industrial operating conditions.

Product Model and Its Meaning

DW1 Air circuit breaker

Technical Parameters
Rated current of circuit breaker.

Endlosure protection rating nominal currentInmA	Rated curent InA
2000	400、630、800、1000、1250、1600、2000
3200	2000、2500、2900、3200
4000	3200、3600、4000
6300	4000、5000、6300

Rated voltage of the circuit breaker.

Ratedinsulation voltage Ui(M)	1000
Rated impuse withstand voltage Ulimpk)	12
Power fequencywithstand votageraio V)1min	5000

The rated short-circuit breaking capacity and short-time withstand current of the circuit breaker (see Table 2),the arc distance of the circuit breaker is "zero (that is,there is no arc outside the circuit breaker).

Rated grade rated curent InmA		2000		3200	4000	6300
Rated grade rated curent InmA		normal	H	3200	4000	6300
Power frequency withstand voltage ratio(V)1min lcu (kA)O-CO	400V	65	80	100	100	120
Power frequency withstand voltage ratio(V)1min lcu (kA)O-CO	690V	45	50	65	80	100
Rated Short-Cirauit Making Capacity nxlcu(kA/cosp	400V	176/0.2	176/0.2	220/0.2	220/0.2	264/0.2
Rated Short-Cirauit Making Capacity nxlcu(kA/cosp	690V	105/0.25	105/0.25	143/0.2	143/0.2	187/0.2
Rated running short-circuit breaking capacity Ics{(kA)O-CO-CO	400V	50	65	80	80	100
	690V	40	50	50	65	80
Rated short-time withstand current lw(kA)1s,delay 04s,O-CO	400V	50	65	80	80	100
Rated short-time withstand current lw(kA)1s,delay 04s,O-CO	690V	40	50	50	65	80

The maximum power loss of the circuit breaker is 360W, and the rated continuous current of the circuit breaker varies at different ambient temperatures.

Environmental temperature	400A	630A	800A	1000A	1250A	1600A	2000A
DW1	400A	630A	800A	1000A	1250A	1600A	2000A
40	400A	630A	800A	1000A	1250A	1600A	2000A
50	400A	630A	800A	1000A	1250A	1550A	1900A
60	400A	630A	800A	1000A	1250A	1550A	1800A