Nsx250f MCCB with Good Quality

Prod Model:	NSX250F
Markets:	North America,South America,Eastern Europe,Southeast Asia,Africa,Oceania,Mid East,Eastern Asia,Western Europe
High Quality Competive Prices:	OEM
Breaking Capacity:	Low Voltage Circuit Breakers
Operation:	Electric Type
Speed:	Normal Type Circuit Breaker
Arc-extinguishing Medium:	Air
Installation:	Fixed
Structure:	MCCB
Poles Number:	3
Certification:	CCC

Product Description

Product Description
NSX mccb circuit breaker 400amp mccb

Application of  MCCB                                                                         

NSX MCCB is suitable for using in the circuit of AC 50/60Hz, please make remarks when ordering, rated insulating voltage 750V, rated working voltage below 690V, and rated current is 16A to 1250A for distributing electric energy, and infrequently OFF/ON under normal condition. The intelligent MCCB, which the rated frame rank current is 800A and below, also can be used for infrequently switching and starting of squirrel cage motor and for protecting motor from over-load, short circuit and under-voltage.

Working conditions of MCCB                                          
1. Not over altitude 2000m;
2. Ambient temperature is between-25°C and +40°C ; Working in the medium which not any   explosive, not enough dielectric to corrode metal, no gas to damage insulation and electric conduction dust;
3. Working in the place would not be invaded by rain and snow; 3. Pollution degree3;         4. Mounting type.

Classification of MCCB                                                     
1) According to using: distribution circuit protection type, motor production type;
2) According to connection mode: front panel connection, back panel connection, plug-in connection;
3) According to operating way: for direct handle operating, for motor operator operating, for rotary handle operating.
4) According to the number of pole: 3,4 pole.
5) According to the accessory: with accessory setting, and without accessory setting.

The Main Capability Index of MCCB            

the protection of SM6 serise breakers(intelligent)

The frame current grad(A)	Rated current	Times of short delay(times)	Notice
100model(SE)	40-100	2-10	1: Grades to adjust:2,3,4,5,6,7,8,10 2: Rated current can be adjusted, and has 48 grades. 3:Distribute electric instantaneous multiple up from 11 times. 4: Motor instantaneous multiple up from 12 times
160model(SE)	64-160	2-10
250model(SE)	100-250	2-10
400model(SE)	160-400	2-10
630model(SE)	250-630	2-10
1250model(SE)	500-1250	2-10

NS/NXS MCCB Technical Data

Type	Pole number	Rated insulating voltage(V)	Rated operating voltage(V)	Rated ultimate short circuit breaking capacity Icu (KA) at 380/415V	Rated servies short circuit breaking capacity Ics at 380/415V(KA)	Operation performance		Utilization category
						ON	OFF
NS-100N	3, 4pole	750	690 and below	25	25	1500	8500	A
NS-100H				70	70
NS-100L				150	150
NS-160N				36	36	1000	7000
NS-160H				70	70
NS-160L				150	150
NS-250N				36	36	1000	7000
NS-250H				70	70
NS-250L				150	150
NS-400N				45	45	1000	4000
NS-400H				70	70
NS-400L				150	150
NS-630N				45	45	1000	4000
NS-630H				70	70
NS-630L				150	150
NS-1250N	3 pole			50	37.5	1000	4000
NS-1600N				50	37.5

Type	Rated currentIn(A)	Note
NS-100	12.5,16,20,25,32,40,50,63,80,100	Tadjustable (0.8~1In)M adjustable (5~10In)
NS-160	16,20,25,32,40,50,63,80,100,125,160
NS-250	160,180,200,225,250
NS-400	315,350,400
NS-630	400,500,630
NS-1250	800,1000,1250	Tadjustable (0.8~1In)M fixed
NS-1600	1000,1250,1600

1. Overload protection with adjustable threshold, as defined by IEC60947-22. Short-circuit protection with adjustable threshold3. Instantaneous short-circuit protection4. Earth fault protection with adjustable threshold5. Load indication : light at 90% of Ir setting threshold; Flashing more than Ir setting threshold6. Fault indicationLEDs indicates the type of fault that caused trippingOverload  (LT protection) or abnormal component temperature (>Ir);Short-circuit (ST or instantaneous protection)( >Im);Earth fault (if earth fault protection option is present)(Ig);Microprocessor malfunction (both (>Ir) and ( >Im) LEDs go on ,plus the (Ig) LEDs if earth fault protection option is present )Battery powered. Spare battery are supplied in an adapter box. When a fault occurs , the LED indicating the type of fault , lights for about 10 minutes . The information is however stored in memory .  The LED can be illuminated by pressing the test pushbutton.  The LED automatically goes off and the memory is cleared when the circuit breaker is reset .

Type	Rated current In(A)	Note
NS-400	400	Ir=0.4~1×In(adjustable 48 setting)Tripping between 1.05~1.3×Ir (IEC60947-2)at 6×Ir Trip time: 1s, 2s, 4s, 8s, 16s(adjustable)(Long-time overload protection)Isd=1.5-2-3-4-5-6-7-8-10×IrTrip time: 0s, 0.1s, 0.2s, 0.3s adjustable+I2t(Short-circuit short time delay protection)Ii=1.5-2-3-4-6-7-8-10-11×Ir(Instantaneous short-circuit protection)Ig=0.1-0.2-0.3-0.4-0.5-0.6-0.7-0.8-1×IrTrip time: 0.1s, 0.2s, 0.3s, 0.4s adjustable+I2t(Earth fault protection) (If option is present)
NS-630	630

4.Accessories

Accessories	Rated operating voltage	Consumption		For type
		Pick-up	Seal-in
Shunt release(MX)	24V100V220/230V380/400V	<10VA	<5VA	NS-100~630
Under-voltagerelease(UN)	220/230V380/400V	<10VA	<5VA

Accessories	Rated operating voltage	Consumption		For type
		AC12	AC15
Auxiliary contact(OF)	380/400V	6	3	NS-100~630
Alarm contact(AL)	380/400V	6

Rotary handle
Direct rotary handle
Degree of protection:IP40
Function:
1) suitability for isolation
2) indication of three positions 0(off) I(on) and tripped
3) press "push to trip" button, can trip-free
4) visibility of and access to trip unit settings
5) the circuit breaker can be locked in the off position by one to three padlocks , diameter 5 to 8mm(not supplied)
Extended rotary handle
Degree of protection:IP55
Function:
1) Suitability for isolation
2) Indication of three positions 0(off) I(on) and tripped
3) Visibility of and access to trip unit settings when the door is open
4) Door opening prevented when circuit breaker is on
5) The circuit breaker can be locked in the off position by one to three padlocks , diameter 5 to 8mm(not supplied).Locking prevents opening of the switchboard door

5.Installation
Circuit breaker may be mounted vertically, horizontally or flat on their back without any derating of characteristics.
6.Fix
Mounting on backplate , mounting on rails
7.Connection
Front panel connection , black panel connection , plug-in connection
8. Outline and Installation Dimension

mm	C	C1	C2	C3	G	G1	G4	G5	H	H1	H2
NS 100/160/250N/H/L	29	76	54	108	62.5	125	70	140	80.5	161	94
NS 400/630N/H/L	41.5	116	92.5	184	100	200	113.5	227	127.5	255	142.5

mm	H3	H4	H5	H6	H7	K	K1	K2	L	L1	L2	P1	P2	P4	P5
NS 100/160/250N/H/L	188	160.5	321	178.5	357	17.5	35	70	52.5	105	140	81	86	111*	83
NS 400/630N/H/L	285	240	480	237	474	22.5	45	90	70	140	185	95.5	110	168	107

mm	P6	R	R1	R2	R4	R5	ΦT	ΦT4	(Ue)
NS 100/160/250N/H/L	88	14.5	29	54	108	143	6	22	≤32
NS 400/630N/H/L	112	31.5	63	71.5	143	188	6	32	≤32

company also produce same -ABB-Tmax type MCCB

same Tmax MCCB is the lasted model of type, suitable for circuit AC 50Hz/60Hz, rated voltage up to AC 660V, rated operating current up to 630A. It features normal structure, reliable performance, high breaking capacity, used for power distribution and protecting the circuit and electrical equipment against overload and short circuit. It complies with standard of IEC60947-2.

Type		Tmax-160	Tmax-250	Tmax-400	Tmax-630
Poles		3	3	3	3
Rated current In(A)		16-160	100-250	250-400	400-630
Rated operating voltage Ue(V)(50/60Hz)		690
Rated insulation voltage Ui(V)		800
Rated impulse withstand voltage Uimp(kV)		8
Utilisation category		A
Frequency withstand voltage 1 Minute		3000		3500
Rated limited short-circuit breaking capacity Icu(kA)	220/230V	25	50	70	70
	380/415V	16	36	36	36
	400V	10	25	30	30
	500V	8	20	25	25
	690V	3	5	20	20
Rated operating short-circuit breaking capacity Ics (100% Icu)	220/230V	100%	75%	100%	100%
	380/415V
	400V
	500V
	690V
Rated short-circuit closing capacity Icn(kA)	220/230V	52.5	105	154	154
	380/415V	32	75.6	75.6	75.6
	400V	17	52.5	63	63
	500V	13.6	40	52.5	52.5
	690V	4.3	7.7	40	40
Mechancial life	Operating recycle times	25000		2000
	Operating recycle times per hour	240			120
Electrical life	Operating recycle times	8000		6000	5000
	Operating recycle times per hour	120			60