Detailed Product Description
NS series molded case circuit breaker(circuit breaker,mccb)
1.Application
NS series mouled case circuit breaker is suitable for short circuit and overload protection for circuit of AC 690V 50/60Hz,rated current from 12.5A to 630A.
It takes protect effect when mouse cage motors non-frequent start,breaking off working and protecting overload,short circuit and lacking voltage.
2.Main technical specifications
NS mouled case circuit breakers | ||||||||
Number of poles | 3,4 | |||||||
Rated current(A) | In | 40 | 630 | |||||
65 | 630 | |||||||
Rated insulation voltage (V) | Ui | 750 | ||||||
Rated impluse withstand voltage(Kv) | Uimp | 8 | ||||||
Rated operational voltage(V) | Ue | AC | 50/60Hz | 690 | ||||
DC | 500 | |||||||
Type of circuit breaker | N | H | L | |||||
Ultimate breaking capacity(ka rms) | Icu | AC 50/60Hz | 220/240v | 85 | 100 | 125 | ||
380/415V | 36 | 70 | 125 | |||||
440V | 35 | 65 | 125 | |||||
500V | 30 | 50 | 90 | |||||
525V | 22 | 35 | 90 | |||||
660/690V | 8 | 10 | 50 | |||||
Service breaking capacity(ka rms) | Ics | Icu | 100 | |||||
Utilisation category | A | |||||||
Durability(C-O cycles) | Mechanical | 4000 | ||||||
electrical | 400V | In | 1000 | |||||
