GXB3Z 125A DC MCB Miniature Circuit Breaker

Short Description:

GXB3Z-DC Series DC Miniature circuit breaker is suitable for lines with rated current of 125A and below DC rated voltage of DC250V,500V and 1000V.
It’s used for overload, short-circuit protection of facilities and electrical equipment of DC power distribution system, and can be widely used in electric power, post and telecommunications, industrial and mining enterprises and other industries.
GXB3Z-DC Series DC Miniature circuit breaker is composed of outer casing, operation mechanism, thermal release, electromagnetic tripping contact system, arc-extinguishing system etc. Unique design structure and powerful permanent magnet act-extinguishing system. The product has a short circuit capability of 10kA and a mechanical life of more than 20,000times. The appearance of the product is beautiful, mounting rails TH35-7.5 standard steel rail, and GXB3-DC has the following features: the handle is designed on the front side of the front end, and the operation is safe and strong. Feel comfortable, be sure to pay attention to the “+,-” polarity when wiring, the power supply goes in and out, in line with the characteristics of the power supply line, easy to install, saves the wire
This products meets the requirements of GB14048.2, IEC60947-2, CCC and CE certification.

Product Detail

Product Tags


  • Rated voltage DC250V, DC500V, DC1000V, which are suitable for photovoltaic solar systems
  • Small volume saving installation space: rated current 125A only 18mm width, saving space by 30%
  • High-efficiency protection performance: 10KA High breaking capacity, mechanical life 20,000times
  • Clear Contact indication window: position visualization, avoiding incorrect operation
  • Lighter operating force: 125A has lighter operating force, which is convenient for product operation
  • High quality, innovative technology, strict testing, lean production and improve efficiency


Frame rated current((A) Pole Rated voltage(V) Rated current(A) Breaking capacity(A) Time constant(ms) Instantaneous release current


1 DC250V 1,2,3,4,6,10,16,20,25,32,40,50,63 10000 10 8In-12In
2 DC500V
3 DC1000V
4 DC1000V


1 DC250V 80,100,125 10000 10 8In-12In
2 DC500V
3 DC1000V
4 DC1000V



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