NS series 3P/4P Moulded Case Circuit Breaker
Application of NS MCCB
NS, NSX series Moulded Case Circuit Breaker(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.
| 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 |
Accessories
| Accessories | Rated operating voltage | Consumption | For type | |
| Pick-up | Seal-in | |||
| Shunt release(MX) | 24V 100V 220/230V 380/400V |
<10VA | <5VA | NS-100~630 |
| Under-voltagerelease(UN) | 220/230V 380/400V |
<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 | 3 | |
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
