Yueqing Yijin Electronics Co., Ltd.
Circuit Breaker
YJB1Z-125 Small DC Circuit Breaker
YJB1Z-63 series DC miniature circuit breaker (hereinafter referred to as circuit breaker) is suitable for circuits with rated current of 63A and below, and DC rated voltage of 250V and 440V. Used for overload and short circuit protection of facilities and electrical equipment in DC distribution systems, it can be widely used in…
This product complies with the requirements of IEC60947-2 and GB14048.2 standards.
Scope of use
YJB1Z-125 series DC miniature circuit breaker (hereinafter referred to as circuit breaker) is suitable for circuits with rated current of 125A and below, DC rated voltage of 220V and 440V. Used for overload and short circuit protection of facilities and electrical equipment in DC distribution systems, it can be widely used in industries such as power, postal and telecommunications, transportation, and industrial and mining enterprises.
This product complies with the requirements of IEC60947-2 and GB14048.2 standards.
Model Meaning
Product Features
The YJB1Z-125 DC circuit breaker consists of a housing, an operating mechanism, a thermal release, an electromagnetic release contact system, an arc extinguishing system, etc. It has overload and short circuit protection functions. The unique structure and strong permanent magnet arc extinguishing system design make the product have a short circuit capacity of 10KA, a mechanical life of more than 20000 times, and a beautiful appearance. The installation guide rail is made of TH35-7.5 standard steel, and has the following characteristics: the handle is designed above the front end face, with strong safety and comfortable hand feel during operation. When wiring, attention must be paid to the “+” and “-” polarity, and the power supply enters and exits, which conforms to the characteristics of power supply incoming and outgoing lines. It is easy to install and saves wires.
Technical Parameter
| Shell level rating Constant current 1mm (A) |
number of poles | Width/Position (18mm Multiple) |
rated voltage (V) |
Rated current In (A) | Rated ultimate short-circuit capacity | Instantly detached Buckle type |
|
| Breaking current Icu(A) |
time constant T(ms) |
||||||
| sixty-three | one | one | DC125V/220V | 63, 80, 100 125A |
ten thousand | ten | C |
| two | two | DC250V/440V | |||||
Standard Time – Current
| test | Instantly detached Buckle type |
DC test Test current |
Initial state | Tripping or non tripping time limit | Expected results | notes |
| a | C | 1.05In | cold state | t≥2h | Do not release | |
| b | C | 1.3In | Immediately after Experiment A |
t<2h | trip | Current at 5 seconds Internally stable increase |
| C | C | 8In | cold state | t≥0.2s | Do not release trip |
Closing assistance switch on power supply |
| 12In | t<0.2s |
Wiring diagram
Installation and overall dimensions
