YFM1 Series Molded Case Circuit Breakers
YFM1 series plastic shell type circuit breaker (hereinafter referred to as circuit breaker) is one of the new circuit breakers desianed and developed by the company comprehensively usinginternational advanced technology. lts rated insulation voltage is 800V, suitable for AC 50Hzor 60Hz, rated working voltage to 690V, rated current to 800A distribution network circuit.used to distribute power and protect lines and power equipment from overload, short circuitundervoltage and other faults damage. At the same time, it can also be used as the motor'sinfrequent starting and overload, short circuit, undervoltage protection.
Specification Parameter
1.The instantaneous action characteristic of the circuit breaker for distribution is set at 10In,and the instantaneous
action characteristic of the circuit breaker for motor protection is set at 12In.
2.Rating of circuit breaker
| Model number | Housing grade Rated current A | Rated current | 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 |
| YFM1-100L | 100(63) | 10,16,20,32,40,50,63 | 400 | 500 | 35 | 17.5 | |
| YFM1-100M | 50/10 | 25/5 | |||||
| YFM1-125L | 125 | 50,63,80,100,125 | 690 | 800 | 35/8 | 25/5 | 1.4 |
| YFM1-125M | 75/10 | 50/10 | 1.7 | ||||
| YFM1-250L | 250 | 100,125,160,180,200,225,250 | 35/8 | 25/5 | 2.3 | ||
| YFM1-250M | 75/10 | 50/10 | 2.8 | ||||
| YFM1-400L | 400 | 225,250,315,350,400 | 50/10 | 25/5 | 6.6 | ||
| YFM1-400M | 70/10 | 50/5 | |||||
| YFM1-400H | 100/10 | 50/10 | |||||
| YFM1-630L | 630 | 400,500,630 | 50/10 | 25/5 | |||
| YFM1-630M | 70/10 | 50/10 | |||||
| YFM1-630H | 100/10 | 70/10 | 10 | ||||
| YFM1-800L | 800 | 630,700 | 70/10 | 50/10 | |||
| YFM1-800H | 100/10 | 70/10 |
Note:Breaking capacity is 400V breaking capacity.
2.Operating characteristics of overcurrent trip device for distribution circuit breaker
| No. | Test current name | I/In | Appointed time | Starting state | |
| 1 | Default no trip current | 1.05 | 2h(In>63A)1h(In≤63A) | Cold state | |
| 2 | Default trip current | 1.30 | 2h(In>63A)1h(In≤63A) | This is followed by the first experiment | |
3.Operating characteristics of overcurrent trip of circuit breaker for motor protection
| No. | Test current name | Setting current | Appointed time | Starting state | |
| 1 | Default no trip current | 1.05 | 2h | Cold state | |
| 2 | Default trip current | 1.2 | 2h | This is followed by the first experiment | |
Product Advantage
According to its rated limit short-circuit breaking capacity, the circuit breaker is divided into ltype (standard type), M type (higher score type), H type (high score type) three categories.The circuit breaker has the characteristics of small volume, high breaking and short flying arc.Circuit breaker product standard: in line with lEC60947-2,GB14048.2-2008.
1.Ambient air temperature
The upper limit of ambient air temperature is +40°C;
The average value of ambient air temperature for 24h does not exceed +35°C.The lower limit of ambient air temperature is -5°C
2.Altitude
The elevation of the installation site does not exceed 2000m.Atmospherie condition
The relative humidity of the atmosphere does not exceed 50% when the ambient air temperature is +40'C; lt canhave higherrelative humidity at lower 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 level is level 3.
Outline And Mounting Dimensions
Model number | Overall dimension | Mounting dimension | ||||||||||||||
| Front wiring | ||||||||||||||||
| W | L | H | W1 | L1 | H1 | H2 | H3 | L2 | A | B | φd | |||||
| 2P | 3P | 4P | 3P | 4P | ||||||||||||
| YFM1-63L | 51 | 76 | 100 | 135 | 74 | 50 | 170 | 90 | 20 | 20 | 117 | 25 | 50 | 117 | 3.5 | |
| YFM1-63M | 51 | 76 | 100 | 135 | 82 | 50 | 170 | 99 | 28 | 28 | 117 | 25 | 50 | 117 | 3.5 | |
| YFM1-125L | 65 | 90 | 121 | 150 | 68 | 60 | 255 | 86 | 24 | 24 | 134 | 30 | 60 | 129 | 4.5.6 | |
| YFM1-125M | 65 | 90 | 121 | 150 | 86 | 80 | 255 | 104 | 24 | 24 | 134 | 30 | 60 | 129 | 4.5.6 | |
| YFM1-125G | 65 | 90 | 121 | 150 | 68 | 60 | 255 | 86 | 24 | 24 | 134 | 30 | 60 | 129 | 4.5.6 | |
| YFM1-250L | 75 | 105 | 142 | 165 | 88 | 70 | 365 | 110 | 24 | 24 | 144 | 35 | 70 | 126 | 5 | |
| YFM1-250M | 75 | 105 | 142 | 165 | 103 | 70 | 365 | 127 | 24 | 24 | 144 | 35 | 70 | 126 | 5 | |
| YFM1-250G | 75 | 105 | 142 | 165 | 88 | 70 | 365 | 110 | 24 | 24 | 144 | 35 | 70 | 126 | 5 | |
| YFM1-400L | 102 | 150 | 200 | 255 | 104 | 87 | 457 | 150 | 38 | 38 | 225 | 44 | 88 | 194 | 7 | |
| YFM1-400M | 102 | 150 | 200 | 255 | 104 | 96 | 457 | 150 | 38 | 38 | 225 | 44 | 88 | 194 | 8 | |
| YFM1-400G | 102 | 150 | 200 | 255 | 104 | 96 | 457 | 150 | 38 | 38 | 225 | 44 | 88 | 194 | 8 | |
| YFM1-630L | 122 | 180 | 240 | 270 | 112 | 116 | 370 | 155 | 44 | 44 | 234 | 58 | 116 | 200 | 7 | |
| YFM1-630M | 122 | 180 | 240 | 270 | 112 | 116 | 370 | 155 | 44 | 44 | 234 | 58 | 116 | 200 | 7 | |
| YEM1-800L | 142 | 210 | 280 | 280 | 117 | 140 | 480 | 160 | 44 | 44 | 243 | 70 | 140 | 243 | 7.5 | |
| YFM1-800M | 142 | 210 | 280 | 280 | 117 | 140 | 480 | 160 | 44 | 44 | 243 | 70 | 140 | 243 | 7.5 | |
| YFM1-800G | 142 | 210 | 280 | 280 | 117 | 140 | 480 | 160 | 44 | 44 | 243 | 70 | 140 | 243 | 7.5 | |
