YF47-63 Series Miniature Circuit Breaker
YF47 series high break miniature circuit breaker (hereinafter referred to as YF47) is a kind of current limiting type high break miniature circuit breaker with double protection of overload and short circuit, which is suitable for AC 50/60Hz, rated voltage 230/400V and below the circuit, as the line overload and short circuit protection, it is not suitable for protecting the motor.
Specification Parameter
Basic specifications and parameters are shown in the following table:
| Model number | Rated current (A) | Type(pole) | Voltage(V) | Breaking capacity(A) | ||||
| YF47-63 | 40-63 | 1 | 230 | 4000 | ||||
| 2,3,4 | 400 | |||||||
| YF47-63 | 1-32 | 1 | 230 | 4500 | ||||
| 2,3,4 | 400 | |||||||
The overcurrent protection characteristics of circuit breakers are shown in the following table:
| NO. | Type specification | Initial state | Test current (A) | Test time | Expected result | Remarks | ||
| 1 | All values | Cold state | 1.13In | t≥1h | non-trip | |||
| 2 | Ail values | Hot state | 1.45In | t<1h | trip | Followed by one experiment | ||
| 3 | In≤32 | Cold state | 2.55In | 1s<t≤60s | trip | |||
| In>32 | 1s<t≤120s | |||||||
| 4 | Type C | Cold state | 5In | t20.1s | non-trip | |||
| Type C | 10ln | |||||||
| 5 | Type D | Cold state | 10ln | t<0.1s | trip | |||
| Type D | 14In | |||||||
Product Advantage
This product conforms to GB10963.1.
The altitude does not exceed 2000m;
The ambient air temperature is not higher than +40 ℃ and not lower than -5℃, and the average value of 24h is not more than +35℃;
Surrounding relative humidity, not more than 50% when the ambient air temperature is +40℃; At a lower temperature, a higher relative humidity is allowed. The monthly average maximum relative humidity of the wettest month is 90%, while the monthly average minimum temperature of the month is +25℃, and condensation on the product is allowed due to temperature changes.
In a medium without explosion risk, and there is no gas and dust sufficient to corrodemetal and destroy insulation in the medium;
Where there is no rain or snow;
Where there is no obvious shaking and shock vibration.
Outline And Mounting Dimensions
