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PV DC Circuit Breaker
  • PV DC Circuit BreakerPV DC Circuit Breaker
  • PV DC Circuit BreakerPV DC Circuit Breaker
  • PV DC Circuit BreakerPV DC Circuit Breaker
  • PV DC Circuit BreakerPV DC Circuit Breaker

PV DC Circuit Breaker

CNKA newest PV DC circuit breakers made in China are not designed for load-switching operations. These DC circuit breakers are ideal for applications where voltage requirements are moderate and frequent adjustments are unnecessary, such as in lighting circuits and household appliances.

CNKA pv dc circuit breaker Introduction


The CNKA PV DC circuit breakers from China, currently in stock, are designed for overload and short circuit protection in DC systems. They are suitable for DC equipment and electrical devices with rated currents up to 63A and rated voltages of 300V, 600V, and 1000V. This product is widely utilized in various sectors such as power, postal services, transportation, mining, and industrial enterprises, and it meets the IEC60898-1 and GB140482 standards. Compared to similar products, it boasts the highest rated voltage level.

 

CNKA pv dc circuit breakerParameter (Specification)


Product Model

 

NBL7-63

Pole

 

1P

2P

4P

Frame Current

 

63A

Rated Current

In

6,10,16,20,25,32,40,50,63A

Rated Working Voltage

Ue(DC)

300V

500/600/1000V

1000V

Rated Insulation Voltage

Ui

1200V

Rated Impulse Withstand Voltage

Uimp

6kV

Breaking Capacity

Icu

6KA

Tripping Characteristic

 

C

Tripping Type

 

Thermal Magnetic

Electrical Life

Actual

500 Cycles(63A Frame)

Standard

300 Cycles

Mechanical Life

Actual

10000 Cycles(63A Frame)

Standard

9700 Cycles

Overvoltage Category

 

I

Pollution Degree

 

3

Ingress Protection

 

IP40 Wiring Port IP20

Resistance To Humidity And Heat

 

Class 2

Terminal Capacity

 

2.5x35mm2

Fastening Torque Of Terminals

 

2.0℃3.5Nm

Ambient Temperature

 

-30℃~~+70℃

Storage Temperature

 

-40℃~+85℃

Installation Method

 

DIN

Standard

 

IEC60947-2

 

CNKA pv dc circuit breaker Feature

 

·  1The front-top design enhances handle operation, making it more comfortable and safe.

· 2 With a mechanical life exceeding 20,000 cycles, it ensures long-term reliability.

· 3 Complies with GBT140482, IEC60947-2 standards, EU RoHS environmental requirements, and holds CCC and CE certifications.

· 4 Ideal for DC systems, particularly in communication and photovoltaic applications.

 

CNKA pv dc circuit breaker Details

 

 

 

CNKA pv dc circuit breaker Development difficulties


The development of PV DC circuit breakers encounters two primary challenges. Firstly, in DC systems, the current does not naturally cross zero, preventing the use of mature arc extinguishing technology as with AC circuit breakers. Secondly, DC systems contain numerous inductive components that store significant amounts of energy, making it more difficult to interrupt DC fault currents.


CNKA pv dc circuit breaker Dimensions and wiring



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    Jingtai Testing Equipment, Xiangyang Industrial Zone, Liushi Town, Leqing City, Wenzhou City, Zhejiang Province

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