CJM7-125 125A DC MCB

The CJM7-125-2 series small circuit breaker has important characteristics such as high rated current and high rated short-circuit breaking capacity, making it a high-performance small circuit breaker.This circuit breaker is mainly suitable for distribution lines with a rated working frequency of 50Hz/60Hz, a rated working voltage of AC240/400V, and a rated current of 125A. lt is used for overcurrent and short-circuit protection of power line facilities and important electrical equipmentin important buildinas or similar places, and can also be used for infrequent on-off operations. This circuit breaker is also suitable for isolation.Product standards: GB/T14048.2,IEC60947-2.

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Feature

  • High rated short-circuit breaking capacity, all rated current levels can reach 10kA;
  • With red and green safety indicators, it has higher safety;
  • Equipped with an energy storage mechanism for operation, the contact quickly closes, overcoming the adverse effects caused by manual operation of the handle speed and greatly improving the product’s service life;
  • The product can be used with various modular accessories, such as AX-1.

Technical Data

Standard GB/T 14048.2,IEC 60947-2
Product shelf current 125A
Rated insulation voltage Ui 1000V
Rated impulse withstand Uimp voltage Uimp 6kV
Rated current 16A,20A,25A,32A,40A,50A,63A,80A,100A,125A
Rated voltage 240/400V(1P,2P),400V(2P,3P,4P)
Rated frequency 50/60Hz
Tripping curve C:8In±20%,D:12In±20%
Number of poles 1P,2P,3P,4P
Unipolar width 27mm
Ultimate short-circuit breaking capacity lcu 10kA
Operating short-circuit breaking capacity Ics 7.5kA
Reference temperature 30°C
Usage Category A
Mechanical life 20,000 cycles
Electrical lifespan 6000 cycles

 

Tripping characteristics

Rated
current(A)		 Overload tripping characteristics Instantaneous tripping
characteristics(A)
1.05ln agreed non tripping time H (cold state) 1.30ln agreed tripping time H (hot state)
In≤125 1 1 10In±20%
In＞125 2 2

 

 

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