YFM3 Series Molded Case Circuit Breaker
YFM3 series molded case circuit breaker (hereinafter referred to as circuit breaker) is oneof the new circuit breakers desianed and developed by the company comprehensively usinginternational advanced technology. its rated insulation voltage is 800V, suitable for AC 50Hzor 60Hz, rated working voltage to 690V, rated current to 800A distribution network circuit.
Specification Parameter
| Model number | Housing grade Rated current A | Rated current A | Rated operating voltage V | Rated insulation voltage V | Rated limit short-circuit breaking capacity kA 400V/690 | Rated operating short-circuit breaking capacity kA 400V/690 | Weight | |
| YFM3-100L | 100(63) | 10162032405063 | 400 | 500 | 35* | 17.5* | ||
| YFM3-100M | 50/10 | 25/5 | ||||||
| YFM3-125L | 125 | 506380100125 | 690 | 800 | 35/8 | 25/5 | 1.4 | |
| YFM3-125M | 75/10 | 50/10 | 1.7 | |||||
| YFM3-250L | 250 | 100 180 250 | 125 160 200225 | 35/8 | 25/5 | 2.3 | ||
| YFM3-250M | 75/10 | 50/10 | 2.8 | |||||
Product Advantage
YFM3 used to distribute power and protect lines and power equipment from overload, short circuit.undervoltage and other faults damage. At the same time, it can also be used as the motor'sinfrequent starting and overload, short circuit, undervoltage protection.
1.Ambient air temperature
The upperlimit of ambient air temperature is +40C.
The average value of ambient air temperature for 24h does not exceed +35℃℃;
The lowerlimit ofambient air temperature is -5°C
2.Altitude
The elevation of the installation site does not exceed 2000mAtmospheric condition
The relative humidity of the atmosphere does not exceed 50% when the ambient air temperature is +40'c; lt can
have higherrelative humidity atlower temperature:The monthly average maximum relative humidity of the wettest month is 90%, while the monthly average minimumtemperature of the month is +25 ° C, taking into account condensation that occurs on the surface of the product dueto temperature changes.
3.Pollution level
The pollution levelis level 3.
Outline And Mounting Dimensions
