MCCB Ns250n 3p Moulded Case Circuit Breaker Ns 250A MCCB

Product Description

NS series CE MCCB
 
NS series moulded case circuit breaker/mccb is one of the most advanced type breakers in the world, which adopt international advanced design and manufacture fechnology. They are suitable for short circuit and overload protection for circuit of AC 690V 50/60Hz, rated current from 12.5A to 630A. It takes protect effect when mouse cage motors non-frequent start, breaking off working and protecting overload, short circuit and lacking voltage. 

Tripping Characteristics of MCCB 
Rated Current of Release(A) Thermodynamic Release (ambient temp +40C) Operational Current of Magnetic Release(A) 
1.05In(cold state) inoperative time(h) 1.30In(heat state) operative time(h) 
In≤ 63 ≥ 1 <1 10In+20% 
63 ≥ 2 <2 10In +20% 
100 ≥ 2 <2 5-10In+20% 

Rated Current of Release(A) Thermodynamic Release (ambient temp +40C) Operational Current of 
Magnetic 
Release(A) 
1.0In(cold state)operative time(h) 1.20In(heat state)operative time(h) 1.50In(heat state)operative time(h) 1.01In(heat state)operative time(h) 
12.5≤ In≤ 400 ≥ 2 <2 ≤ 4min S 12In+20% 

Main Technical Specifications 
Type Rated Current (A) Poles Rated Insulating Voltage(A) Rated Operating Voltage (A) Acting Over Distance (mm) Ultimate short circuit Breaker Capacity Servies Short Circuit Breaker Capacity Operating performance(times)

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)
ln 63	1	1	10ln 20%
63 ln 100	2	2	10ln 20%
100 ln 630	2	2	5-10ln 20%

 

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)
12.5 ln 400	2	2	4min	2S Tp 10S	12ln 20%

 

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
NS-100D	12.5, 16, 20, 25, 32, 40, 50, 63, 80, 100	3 4	950	690	0	18			18		1500	8500
NS-100N						25			25
NS-100H						70			70
NS-100L						150			150
NS-160D	16, 20, 25, 32, 40, 50, 63, 80, 100, 125, 160					25			25		1000	7000
NS-160N						36			36
NS-160H						70			70
NS-160L						150			150
NS-250D	160, 180, 200, 225, 250					25			25		1000	7000
NS-250N						36			36
NS-250H						70			70
NS-250L						150			150
NS-400D	200, 225, 250, 300, 315, 400					35			35		1000	4000
NS-400N						15			45
NS-400H						70			70
NS-400L						150			150
NS-630D	315, 350, 400, 500, 600, 630					35			35		1000	4000
NS-630N						45			45
NS-630H						70			70
NS-630L						150			150