KNM1L Moulded Case Circuit Breaker

Sphere of application
KNM1L series residual current circuit breaker (mccb with rccb ) are applies at the power distribution network of ax 50/60hz, rated operation voltage of 400v (690v) and bellow ,its rated current up to 800A.They can also be up to 800A .They can protect people against indirect contact and prevent fire disaster caused by insulation and ground fault .They can also be used to distribute electric power and protect power equipment against overload and short current ,and can change the circuit and start motor infrequently.

Electricity accessories:
*Shunt trip release
*Undervoltage
*Auxiliary contact
*Alarm contact
*Auxiliary contact and alarm contact
*Rotary handle operation mechanism
*Motor operation mechanism
*Busbar

Frame class		100	225	400	630
Rated current In(A)		40,50,63,80,100	125,140,160,200,225,	225,315,350,400	400,500,630
Rated voltage AC(V)		400	400	400	400
Rated insulation voltage AC(V)		750	750	750	750
Rated pulse voltage AC(KV)		8	8	8	8
Ultimate short-circuit breaking capacity Icu(KA)	AC400V	25	25	25	25
Operative short-circuit breaking capacity Ics	AC400V	Ics=50%Icu
Rated residual operating current(mA)I△n	Undelay	30/100/500,100/300/500		100/300/500	300/500/1000
Rated residual operating current(mA)I△n	Delay	100/300/500	100/300/500	100/300/500	300/500/1000
Mechanical life		8500	7000	4000	4000
Electric life		1500	1000	1000	1000
Rated residual un-operating current(mA)		1500	1000	1000	1000
Working time of the residual current protection		I△n	2I△n	5I△n	10I△n
Maximum breaking time(s)	Undelay	0.2	0.1	0.04	0.04
Maximum breaking time(s)	Delay	0.5/1.15/2.15	0.35/1/2	0.25/0.9/1.9	0.25/0.9/1.9
Outline dimensions(mm)	W	122	142	198	280
	L	150	165	257	280
	H	90	90	106.5	115.5

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