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CAB2-125S 6kA High Current 125A MCB Miniature Circuit Breaker

● Standard: IEC60898-1
● Type of trip: Thermo-magnetic
● Rated current: 63~125A
● Rated voltage: 240/415V
● Number of poles: 1P,2P,3P,4P,1P+N,3P+N
● Rated short-circuit breaking capacity: 6kA
● Tripping curve: C, D
● Ambient air temperature: -5...+40 ºC
● Connection: From top and bottom
● Certificates: CB, CE
  • CAB2-125S

  • Chanan

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The CAB2-125S represents an economical solution in the circuit breaker market, courtesy of Changan Electric's commitment to innovation. Featuring an advanced structural design, this MCB not only assures reliable performance but also showcases a high breaking capacity of 6kA coupled with an aesthetically pleasing exterior. It is tailored for AC systems with a frequency of 50Hz or 60Hz, a rated voltage of up to 400V, and a rated operating current of 125A and below, making it ideal for safeguarding lighting, distribution lines, and equipment within office and residential buildings. Furthermore, the CAB2-125S MCB is also well-suited for infrequent switching operations and line conversions.

Exploring the Superior Features of CAB2-125S MCB

Space Efficiency with a Compact Design

The CAB2-125S MCB's compact and minimalist design proves to be a significant advantage in areas where installation space is constrained. Its space-saving features ensure that functionality is not compromised in compact environments.

Simplified Installation for Enhanced Productivity

These circuit breakers have been engineered with ease of installation as a priority. They boast a modular design and are capable of swift mounting, either onto a DIN rail or directly onto a panel, offering simplicity and convenience during setup.

Current Rating Versatility for Diverse Applications

With an array of available current ratings, the CAB2-125S MCB caters to a wide range of applications while maintaining a rated operating current threshold of 125A and below. This multitude of options ensures that different electrical loads can be accommodated, enhancing the product's adaptability to various usage scenarios.


In conclusion, the CAB2-125S MCB from Changan Electric emerges as an ideal candidate for those seeking an economical yet powerful circuit protection solution. The MCB’s blend of advanced technology, compact design, straightforward installation, and a breadth of current ratings signifies an innovative step forward. 

Technical Parameters


Standard IEC/EN60898-1
Protection Overcurrent and short circuit
Type of trip Thermo-magnetic
No.of poles 1P,2P,3P,4P,1P+N,3P+N
Rated current (In) 63,80,100,125A
Rated voltage (Ue) 240/415V~
Rated frequency 50/60Hz
Rated breaking capacity 6,000A
Rated impulse withstand voltage(1.2/50) Uimp 4,000V
Dielectric test voltage at Ind. Freq. for 1 min 2kV
Thermal release characteristic (1.13-1.45) x In
Magnetic release characteristic C:(5-10) x In, D:(10-20) x In
Electrical life 4,000 Cycles
Mechanical life 10,000 Cycles
Contact position indicator Yes
Protection degree IP20
Ambient temperature -5℃ to +40℃ Max. 95%humidity
Terminal connection type Cable/Pin-type busbar
Max. terminal size for cable 50mm2
Max. tightening torque 3.5N.m
Installation Mounting on 35mm DIN rail
Connection From top and bottom



Overall Dimensions

CAB2-125S-Size

Product Uses

  1. Switchgear for industrial and advanced commercial applications.

  2. Use in 240 / 415V AC distribution systems providing overload and short circuit protection.


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● Standard: IEC60898-1
● Type of trip: Thermo-magnetic
● Rated current: 1~63A
● Rated voltage: 230/400V~240/415V
● Number of poles: 1P,2P,3P,4P,1P+N,3P+N
● Rated short-circuit breaking capacity: 4.5kA
● Tripping curve: B, C, D
● Ambient air temperature: -25...+40 ºC
● Connection: From top and bottom
● Certificates: CB, CE
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  •  Standard: IEC61008-1
  • Type: AC, A
  •  Rated current: 25,40,63,80A
  • Rated voltage: 230/400V~240/415V
  • Poles: 2P(1P+N), 4P(3P+N), N Pole on left
  • Rated sensitivity I△n: 30mA, 100 mA, 300mA
  • Ambient air temperature: -25...+40 ºC
  • Connection: From top and bottom
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  • Combination of RCD and MCB
  • Compact design
  • Various tripping characteristics
  • Wide range of sensitivity options
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