DC miniature circuit breaker
Key attributes
| Brand | Wone Store |
| Model NO. | DC miniature circuit breaker |
| Rated frequency | 50/60Hz |
| Series | DCB |
Product descriptions from the supplier
Description
Product introduction: DC small circuit breaker is suitable for lines with rated current of 125A and below DC current, rated DC voltage of 250V and 500V. GYM9-125DC series DC small circuit breaker adopts the overload and short circuit protection design of DC power distribution system facilities and electrical, which can be widely used in electric power.
Product Features
The design structure consists of the shell, operating mechanism, thermal tripper, electromagnetic release contact system, arc extinguishing system, etc
It has the function of overload and short circuit protection.
Powerful permanent magnet arc fire extinguishing system, so that the short circuit capacity of the product reaches 6KA.
35mm standard rail installation.
The window design can make the product status clear at a glance and avoid misoperation.
Widened handle design to make the product easier to operate.
Anti-crack buckle design enhances product durability and prolongs product life.
The flame-retardant shell design greatly improves product safety.
DC small circuit breaker selection parameters
| Test | DC experimental current | Start state | Tripping or no tripping time limit |
Expected results |
remark |
| a | 1.05In | Cold | t≥1h(In≤63A) t≥2h(In>63A) |
There is no tripping device |
|
| b | 1.3In | After testing immediately | t<2h(In>63A) t<1h(In≤63A) |
Tripping device |
The current steadily rises to the specified value within 5S |
| C | 8In | Cold | t≥0.2s | There is no tripping device |
Turn off the auxiliary switch and turn on the power |
| 12In | t<0.2s | Tripping device |
Working Environment:
The ambient air temperature should not exceed +40°C, low should not exceed -5°C, and the average value should not exceed +35°C.
The altitude of the installation site should not exceed 2000 meters.
When the ambient temperature is high, the relative humidity of the atmosphere does not exceed 50%, and the temperature is +40°C, which can have a higher relative at lower temperatures
Humidity:The average relative humidity in the wet month is 90%, and the average relative humidity in the month is 90%. Taking into account the average low temperature
+25°C condensation on the surface of the product due to temperature changes.
The pollution level is level 2.
The installation category is level 2 and level 3.
Use TH35-7.5 steel mounting rail for installation.
The inclination of the mounting surface and vertical surface should not exceed 5°.
Compress the wire with screws.
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