CJMD7-125 1-4p 125A DC MCB Miniature Circuit Breaker

CJMD7-125 series DC miniature circuit breaker have rated working voltage up to 1000V, mainly suitable for overload and short circuit protection of DC power distribution system equipment and electrical equipment with rated current 125A and below, widely used in power, postal, transportation, mining enterprises and various fields, also can be used for infrequent on-off operation.In China, the shell current and rated short-circuit breaking capacity of our products are the highest in the same category.Conformity to IEC 60947-2

Products Details

Product model and meaning

  • CJ-Corproate logo
  • M-MCB
  • D-Direct Current
  • 7-Standard code
  • 125-Rated frame current

Main Features and Technical Parameters

CJMD7-125 series DC miniature circuit breaker are high-performance DC miniature circuit breaker with a single-pole width of 27mm, rated current up to 125A, rated short-circuit breaking capacity up to 15kA, and various technical parameters leading in China.  

Technical Data

Standard IEC/EN60947-2
Shell frame grade Current 125A
Rated Insulation voltage Ui 1000V
Rated Impulse Withstand Voltage Uimp 6kV
Rated current 32A, 40A, 50A, 63A,80A,100A,125A
Rated voltage DC250V(1P), 500V(2P), 800V(3P), 1000V(4P)
Electromagnetic trip characteristics 10ln±20%
Number of poles 1P,2P, 3P, 4P
Unipolar width 27mm
lcu 10kA(In≤100A), 15kA (In=125A)
lcs 7.5kA (In≤100A),10kA(In=125A)
Reference temperature 30ºC
Utilization Categpry A
Mechanical life 20,000 Cycles
Electrical life 2000 Cycles
Protection Degree IP20

Contact us

Please feel free to give your inquiry in the form below We will reply you in 24 hours