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KNM2 Moulded Case Circuit Breaker

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  • KNM2
  • Korlen

    The rated insulation voltage of this circuit breaker is 750V which is applicable for the electricity distribution net of AC 50Hz, rated working voltage 690V and below, rated working current from 6A to 630A. It is used to distribute electric power and protect the line and power apparatus from being overload and short-circuit protection of the motor.
    This KNM1L Moduled Case sircuit Breaker can be installed vertically and horizontally.
    This product complies with standard IEC60947-2、GB14048.2。

    The anti-limit disconnecting movement characteristics of thermal and magnetic release of the breaker applied with power of the breaker for electricity distribution.
No. Testing current name I/In Assumed time Starting situation
1 Assumed un-tripping current 1.05 2h(In63A),
1h(In≤63A)
Cold state
 
2
Assumed tripping current 1.30 2h(In63A),
1h(In≤63A)
Start right after the number 1 test

Type KNM2-100N KNM2-160N KNM2-250N KNM2-400N KNM2-630N KNM2-800N KNM2-1000N KNM2-1250N KNM2-1600N
Rated current In(A) 16,32,63,80,100 125,160 200,250 350,400 500,630 630,800 800,1000 1000,1250 1250,1600
Rated insulation voltage(V) 750 750 750 750 750 800 800 800 800
Rated pulse voltage(KV) 8 8 8 8 8 8 8 8 8
Rated working voltage ue (V) AC690 AC690 AC690 AC690 AC690 AC690 AC690 AC690 AC690
DC500 DC500 DC500 DC500 DC500



Ultimate
short-circuit 
breaking
capacity
lcu(KA) 
AC 50/60Hz
220/240V 85 85 85 85 85 50 50 50 50
380/415V 36 36 36 50 50 50 50 50 50
440V 35 35 35 42 42 50 50 50 50
500V 25 30 30 30 30 40 40 40 40
525V 22 22 22 22 22 40 40 40 40
660/690V 8 8 8 10 10 30 30 30 30
Operative short-circuit Breaking capacity 75%luc 75%luc 75%luc 75%luc 75%luc 75%luc 75%luc 75%luc 75%luc
Isolation function
Usage category A A A A A B B B B
Machanical life 50000 40000 20000 15000 10000 10000 10000 10000 10000
Electrical life 30000 20000 10000 6000 4000 5000 5000 4000 2000
Outline dimensions(mm) W 105 105 105 140 140 210 210 210 210
H 161 161 161 255 255 255 255 327 327
D 86 86 86 110 110 147 147 147 147

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Tel: 0086-577-62207777 / 62870277
Add: NO.258 Weiershi Road,Yue Qing Economic & development Zone(yanpan),zhejiang China
E-mail: korlen@korlen.com
Fax: 0086-577-62661666

Circuit Breaker

Low Voltage

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