Sontuoec Nsxs Series MCCB 3p 4p Moulded Case Circuit Breaker

Product Description

Product Description

STN2/STN3(NSXs Style)  MCCB circuit breakers 100/160/250/400/630A

STN3  series of MCCB reflects the latest current limiting principle and manufacturing technology, characterized by compact structures, full modularization, high breaking, and zero flashover. Circuit breaker is equipped with overload, short-circuit and undervoltage protection device, so as to protect the circuit and power supply equipment from damage.      

Ambient air temperature

The ambient air temperature is about +40 ºC; the ambient air temperature is below -5ºC; the average value of ambient air temperature 24h is not more than +35ºC.
Elevation: installation elevation of not more than 2000m.
Atmospheric condition:
Relative humidity of the atmosphere in the surrounding air temperature of +40ºC is less than 50%; the relative humidity at the lower temperature can be high; most of the wet month average maximum relative humidity of 90%, the monthly average minimum temperature of +25ºC and considering the temperature due to changes in product surface.
Pollution grade: grade 3.

Specifications	NSXs100				NSXs160				NSXs250				NSXs400				NSXs630
Frame Current (A)	100				160				250				400				630
Number of Poles	3		4		3		4		3		4		3		4		3		4
Ultimate Breaking Capacity (Icu, kA)	F	N		H	F	N		H	F	N		H	F	N		H	F	N		H
AC220/240V (kA)	85	90		100	85	90		100	85	90		100	40	85		100	40	85		100
AC380/415V (kA)	36	50		70	36	50		70	36	50		70	36	50		70	36	50		70
Rated Insulation Voltage	AC800V
Rated Working Voltage	AC690V
Rated Current, Thermal Tripping, TMD, A	63, 80, 100				80, 100, 125, 160				125, 160, 200, 250				-				-
Rated Current, Electronic Tripping, MIC, A	40, 100				40, 100, 160				100, 160, 250				250, 400				250, 400, 630
Auxiliary, Alert, Fault Accessories	OF/SD/SDE/SDx
Shunt & Under Voltage Coil	MX/MN
Mechanical Life	50000				40000				20000				15000				15000
Electric life	30000				20000				10000				6000				4000

Rated current of release(A)	Thermodynamic release (ambient temp +40°C)				operational current of magnetic ralease(A)
	1.05In(cold state) in operative time(h)		1.30(heat state) inoperative time(h)
In≤63	≥1		<1		10In±20%
63	≥2		<2		10In±20%
100	≥3		<3		5-10In±20%
Rated current of release(A)	Thermodynamic release (ambient temp +40°C)				operational current of magnetic ralease(A)
	1.0 In(cold state) operative time(h)	1.20(heat state) operative time(h)	1.50(heat state) operative time(h)	1.01(heat state) operative time(h)
12.5	≥2	<2	≤4min	2s	12In±20%

Installation Instructions

 

Our Services:
 

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2. Continuance Service and support
3. Good-after service
4. Quality Reliability and Long Product Life.

  
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