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.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.

  • YFM1 Series Molded Case Circuit Breakers
  • YFM1 Series Molded Case Circuit Breakers
  • YFM1 Series Molded Case Circuit Breakers
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YFM1 Series Molded Case Circuit Breakers
YFM1 Series Molded Case Circuit Breakers
YFM1 Series Molded Case Circuit Breakers
YFM1 Series Molded Case Circuit Breakers
YFM1 Series Molded Case Circuit Breakers
YFM1 Series Molded Case Circuit Breakers
YFM1 Series Molded Case Circuit Breakers
YFM1 Series Molded Case Circuit Breakers
YFM1 Series Molded Case Circuit Breakers
YFM1 Series Molded Case Circuit Breakers
YFM1 Series Molded Case Circuit Breakers
YFM1 Series Molded Case Circuit Breakers
YFM1 Series Molded Case Circuit Breakers
YFM1 Series Molded Case Circuit Breakers
YFM1 Series Molded Case Circuit Breakers
YFM1 Series Molded Case Circuit Breakers
YFM1 Series Molded Case Circuit Breakers
YFM1 Series Molded Case Circuit Breakers

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 numberHousing grade
Rated current A
Rated currentRated
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
YFM1-100L100(63)10,16,20,32,40,50,63 400 500 3517.5
YFM1-100M50/1025/5
YFM1-125L125 50,63,80,100,125 690 800 35/825/51.4 
YFM1-125M75/1050/101.7 
YFM1-250L250 100,125,160,180,200,225,25035/825/52.3 
YFM1-250M75/1050/102.8 
YFM1-400L400 225,250,315,350,400 50/1025/56.6 
YFM1-400M70/1050/5
YFM1-400H100/1050/10
YFM1-630L630 400,500,630 50/1025/5
YFM1-630M70/1050/10
YFM1-630H100/1070/1010 
YFM1-800L800 630,700 70/1050/10
YFM1-800H100/1070/10

Note:Breaking capacity is 400V breaking capacity.

2.Operating characteristics of overcurrent trip device for distribution circuit breaker

No.Test current nameI/InAppointed timeStarting state
Default no trip current1.05 2h(In>63A)1h(In≤63A)Cold state
Default trip current1.30 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 nameSetting currentAppointed timeStarting state
Default no trip current1.05 2hCold state
Default trip current1.2 2hThis is followed by the first experiment


Outline And Mounting Dimensions

Model

number

Overall dimensionMounting dimension

Front wiring
WLHW1L1H1H2H3L2ABφd
2P3P4P3P 4P
YFM1-63L51 76 100 135 74 50 170 90 20 20 117 25  50 117 3.5 
YFM1-63M51 76 100 135 82 50 170 99 28 28 117 25  50 117 3.5 
YFM1-125L65 90 121 150 68 60 255 86 24 24 134 30  60 129 4.5.6
YFM1-125M65 90 121 150 86 80 255 104 24 24 134 30  60 129 4.5.6
YFM1-125G65 90 121 150 68 60 255 86 24 24 134 30  60 129 4.5.6
YFM1-250L75 105 142 165 88 70 365 110 24 24 144 35  70 126 
YFM1-250M75 105 142 165 103 70 365 127 24 24 144 35  70 126 
YFM1-250G75 105 142 165 88 70 365 110 24 24 144 35  70 126 
YFM1-400L102 150 200 255 104 87 457 150 38 38 225 44  88 194 
YFM1-400M102 150 200 255 104 96 457 150 38 38 225 44  88 194 
YFM1-400G102 150 200 255 104 96 457 150 38 38 225 44  88 194 
YFM1-630L122 180 240 270 112 116 370 155 44 44 234 58  116 200 
YFM1-630M122 180 240 270 112 116 370 155 44 44 234 58  116 200 
YEM1-800L142 210 280 280 117 140 480 160 44 44 243 70  140 243 7.5 
YFM1-800M142 210 280 280 117 140 480 160 44 44 243 70  140 243 7.5 
YFM1-800G142 210 280 280 117 140 480 160 44 44 243 70  140 243 7.5 

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