Home > Products > Electronics & Electricity > Breaker & Protector

KNM3 Series moulded-case circuit-breakers guarantee an extremely high performance level while being progressively smaller in size, simple to install and able to provide increasingly better safety guarantees for the operator.
KNM3 Series Moulded-case circuit-breakers can be used in low voltage civil and industrial installations with 1 to 3200 A operating current.
Since assembly instructions are simple, trip units can quickly and easily be replaced; even in the field.
All this makes the circuit-breakers very easy to operate with considerable savings due to rationalized stock management.






This product complies with standard IEC60947-2, GB14048.2






NO.


testing current name


I/In


Assumed time


Starting
situation




1


Assumed un-
tripping current


1.05


2h(In>63A),
1h(In63A)


Cold state




2


Assumed tripping
current


1.30


2h(In>63A),
1h(In63A)


Start right 








Type


KNM3-125N


KNM3-160N


KNM3-250N


KNM3-400N


KNM3-630N


KNM3-800N




Rated current In(A)


125A


160A


250A


400A


630A


800A




Rated insulation voltage(V)


500


690


800


800


800


800




Rated pulse voltage(KV)


6


6


8


8


8


8




Rated working voltage ue (V)


AC500


AC690


AC690


AC690


AC690


AC690




DC250


DC500


DC750


DC750


DC750


DC750




Ultimate
short-circuit
breaking
capacity
lcu(KA)
AC 50/60Hz


220/240V


40


50


65


65


65


65




380/415V


25


35


35


35


35


35




440V


16


20


30


30


30


30




500V


12


12


25


25


25


25




690V


-


8


14


20


20


20




Operative short-circuit Breaking capacity


.


.


.


.


.


.




Isolation function


A


A


A


A


B


B




Usage category


.


.
















Mode
of
tripping
unit


Unadjustable






















Adjustable thermal trip
Unadjustable electromagetic trip








.


.










Unadjustable








.


.


.


.




Machanical life


25000


25000


25000


20000


20000


20000




Electrical life


8000


8000


8000


7000


5000


5000







L


78


90


105


140


210


210




D


70


70


103.5


103.5


103.5


103.5























 Production Capacity: we have more than 1500 workers and 100 expert engineers who can produce one container of our products in less than 5 days. Annual production is as follows; MCB 15 million poles, RCCB (thermal type) 2 million poles, (magnetic type) 800 thousand pole. Production of other products is also in the range of not less than thousands of poles annually.


 Pricing: we offer the best price to meet the requirement of all customers depending on the quality and the number of quantity demanded.






http://www.korlenelectric.com