China Nsx MCCB Circuit Breaker 400AMP MCCB

NSX mccb circuit breaker 400amp mccb
Application of MCCB
SM6(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 anyexplosive, 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 currentTimes of short delay(times)Notice100model(SE)40-1002-10
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)64-1602-10250model(SE)100-2502-10400model(SE)160-4002-10630model(SE)250-6302-101250model(SE)500-12502-10

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=0.4~1xIn(adjustable 48 setting)Tripping between 1.05~1.3xIr (IEC60947-2)at 6xIr Trip time: 1s, 2s, 4s, 8s, 16s(adjustable)(Long-time overload protection)Isd=1.5-2-3-4-5-6-7-8-10xIrTrip time: 0s, 0.1s, 0.2s, 0.3s adjustable+I2t(Short-circuit short time delay protection)Ii=1.5-2-3-4-6-7-8-10-11xIr(Instantaneous short-circuit protection)Ig=0.1-0.2-0.3-0.4-0.5-0.6-0.7-0.8-1xIrTrip 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

mmCC1C2C3GG1G4G5HH1H2NS 100/160/250N/H/L29765410862.51257014080.516194NS 400/630N/H/L41.511692.5184100200113.5227127.5255142.5

mmH3H4H5H6H7KK1K2LL1L2P1P2P4P5NS 100/160/250N/H/L188160.5321178.535717.5357052.51051408186111*83NS 400/630N/H/L28524048023747422.545907014018595.5110168107

mmP6RR1R2R4R5ΦTΦT4(Ue)NS 100/160/250N/H/L8814.52954108143622≤32NS 400/630N/H/L11231.56371.5143188632≤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.

TypeTmax-160Tmax-250Tmax-400Tmax-630Poles3333Rated current In(A)16-160100-250250-400400-630Rated operating voltage Ue(V)(50/60Hz)690Rated insulation voltage Ui(V)800Rated impulse withstand voltage Uimp(kV)8Utilisation categoryAFrequency withstand voltage 1 Minute30003500Rated limited short-circuit breaking capacity Icu(kA)220/230V25507070380/415V16363636400V10253030500V8202525690V352020Rated operating short-circuit breaking capacity Ics (100% Icu)220/230V100%75%100%100%380/415V400V500V690VRated short-circuit closing capacity Icn(kA)220/230V52.5105154154380/415V3275.675.675.6400V1752.56363500V13.64052.552.5690V4.37.74040Mechancial lifeOperating recycle times250002000Operating recycle times per hour240120Electrical lifeOperating recycle times800060005000Operating recycle times per hour12060

FAQ:
Q: What's your warranty ?
A: Two years
Q: How can i trust you and your company ?
A: Suntree is a group company, we have 6 subcompanies.
Have cooperation with LS, EKF the world-class companies.
Our company over 500 employees, products pass
CE,IEC,TUV,SAA, RCM, ROHS certificates.
Q: What's your contact information:
A: Our address: Liushi town, Zhejiang province, China.
Q: What's your shipment method?
A: We ship by Express, by air, by sea, by train. Normally we checked and compare,
then provide customer the most proper shipment method.
Q: What's about MOQ?
A: First order MOQ=1pcs
Q: If i want to release order, what's the payment method you accept ?
A: We accept T/T, Paypal, Western union, L/C.
Q: If i want to release order, what's the process?
A: Thanks. You can send inquiry to us by made-in-china,
or send us by email, we will reply within 24hrs.
Thank you & Now pls send your inquiry ! ^!^