Moulded Case Circuit Breaker 3 Pole 4 Pole Load Compact Switch MCCB

Product Description

Product Description

NS/NSX 3P 4P 100A 160A 250A 400A 630A ;800A 1250A Moulded Case Circuit Breaker 3 Pole 4 Pole Load Compact Switch MCCB

NS series moulded case circuit breaker is one of breaker which adopts international advanced design, manufacture technology to develop. The rated insulating voltage is 750V, suitable for AC 50Hz(60Hz),rated working voltage 690V or below, rated working current is 12.5A to 630A;800-1250A of circuit and used in distributing electric energy, and non-frequent breaking in the normal conditions , protecting the current? equipment from overload?under voltage, circuit breaker with rated frame current 400A or below,can be used in mousecage motor's non-frequent start, breaking during working, protecting motor from overload, short circuit?undervoltage,the product conforms to IEC60947-2 standard.
Specifications: MCCB:3P/4P:160A 

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	Operation performance		Utilization category
						ON	OFF
NS-160N	3, 4 pole	750	690 and below	36	36	1000	7000	A
NS-160H				70	70
NS-160L				150	150

Note:1. The N-pole breaker has no protection which closing and opening with the other three poles.
          2. The type of thermal magnetic for NS-400/630 has no four poles.
Trip units main technical parameter: Such As:  250A 3P MCCB
 

 

Type	Rated current In (A)	Note
NS-100	12.50,16,20,25,32,40,50,63,80,100	T adjustable (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

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.







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