JXW45 Intelligent universal circuit breaker

JXW45 Intelligent Universal Circuit Breaker

JXW45 (DW45) series universal Air circuit breaker(hereinafter referred to as breaker)is suitable for the circuit of AC 50Hz with rated voltage 400V, 690V and rated current up to 6300A. It is mainly used to distribute electric energy and protect circuits and power-supply equipment from overload, under-voltage, short-circuit and single-phase earthing. with intelligentized and selective protection functions, the breaker can improve the reliability of power supply, and avoid unnecessary power failure. The breaker is applicable for power stations, factories, mines(for 690V) and modern high-buildings, especially for the distribution system of intelligentized building. 

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Basic Specification and Main Parameters

Model number

JXW45 (DW45)

Pole number



IEC 60947-2

Rated working current(In)


Rated working voltage(Ue)

under AC690V

Rated frenquency


Short-circuit breaking capacity


Enviroment temeperature


Installation level


Pollution grade

Class 3


Drawer type and fixed type



Structure Characteristics of Intelligent Air Circuit Breaker(ACB)

1. Our intelligent air circuit breaker can be of a fixed type and draw-out type. The fixed type air circuit breaker is installed within a special drawer to become a draw-out type breaker. Our circuit breaker consists of a contact system, and arc-extinguishing system, operating mechanism, current transformer, intelligent controller and auxiliary switches, secondary plug and socket, under voltage and shunt releases. The draw-out type air circuit breaker has a holder that is made up of right and left side plates, base, beams, etc.

2. Contact system
It adopts integrated contact system, including the main contact and arc contact.  

3. Arc-extinguishing chamber
Each pole has an arc-extinguishing chamber, which works to separate and isolate each electrode. The arc extinguishing chamber is enclosed within the insulating base of the intelligent air circuit breaker, which enforces the mechanical strength of arc extinguishing chamber wall and avoids breakage when it is breaking a large short circuit current.


Environment Conditions for Operation

Temperature condition: -5℃ ~+40℃ ; the average value within 24h not exceed +35℃ . 

Elevation: altitude of installation place shall not exceed 2000m. 

Atmosphere condition: relative humidity at +40℃ shall not exceed 50%. Higher humidity is permissible at lower temperature condition. When the higher monthly average relative humidity is 90% in the humiddest month , the lowest monthly average temperature of this month is +25℃ . And consider the influence of dew on product surface due to temperature changes. 

Pollution grade: gradeIII. 

The breaker should be installed according to the requirement on the instruction manual: the vertical inclination degree shall not exceed 5°.


Outline and Installation Dimensions



Product Detail

Intelligent universal circuit breaker

Smart switch is durable

High contact point

Good electrical conductivity


Thickening steel

Muti-safety protection

High temperature resistance and aging resistance


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