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SKM8 Series Moulded Case Circuit Breaker

SKM8 Series Moulded Case Circuit Breaker - Moulded Case Circuit Breakers - Circuit Breaker

Application:
SKM8 series mould case circuit breaker is one of the most advanced type breakers in the world.Which adopt internationaladvanced design and manufacture technology.They are suitable for short circuit and overload protection for circuit of AC690V,50/60Hz,rated current from 12.5A to 630A.Its rated insulation voltage is 690V.It can make and break non-frequent start,breaking off working and protecting overload,short circuit and under voltage.

Tripping Characteristics:

Rated current of release(A) Thermodynamic release(ambient temp+40) Operation current of magnetic release(A)
1.05ln(cold state)
inoperative time(h)
1.30ln(heat state)
inoperative time(h)
ln63  1 1 10ln20%
63ln100 2 2 10ln20%
100ln630 2 2 5-10ln20%

Rated current of release(A) Thermodynamic release(ambient temp+40) Operation current of magnetic release(A)
1.0ln(cold state)
inoperative time(h)
1.20ln(heat state)
inoperative time(h)
1.50ln(heat state)
inoperative time(h)
1.0ln(heat state)
inoperative time(h)
12.5ln400 2 2 4min 2STp10S 12ln20%

Technical Specification:
Type Rated current(A) Pole No. Rated insulating voltage (V) Rated operating voltage Arcing over distance (mm) Ultimate short circuit breaking capacity(kA) Services short circuit breaking capacity(kA) Operation performance (Endurance)
ON OFF
SKM8-100D 12.5, 16, 20, 25, 32, 40, 50, 63, 80, 100 3
4
950 690 0 18 18 1500 8500
SKM8-100N 25 25
SKM8-100H 70 70
SKM8-100L 150 150
SKM8-160D 16, 20, 25, 32, 40, 50, 63, 80, 100, 125, 160 25 25 1000 7000
SKM8-160N 36 36
SKM8-160H 70 70
SKM8-160L 150 150
SKM8-250D 160, 180, 200, 225, 250 25 25 1000 7000
SKM8-250N 36 36
SKM8-250H 70 70
SKM8-250L 150 150
SKM8-400D 200, 225, 250, 300, 315, 400 35 35 1000 4000
SKM8-400N 15 45
SKM8-400H 70 70
SKM8-400L 150 150
SKM8-630D 315, 350, 400, 500, 600, 630 35 35 1000 4000
SKM8-630N 45 45
SKM8-630H 70 70
SKM8-630L 150 150