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 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 | Rated 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 |
SM8max MCCB
| Type | SM8max-160 | SM8max-250 | SM8max-400 | SM8max-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 | |||
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
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A: We accept T/T, Paypal, Western union, L/C.
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A: Thanks. You can send inquiry to us by made-in-china,
or send us by email, we will reply within 24hrs.
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