NBS series miniature circuit breaker is characteristic of small size, light weight,
novel structure  and  excellent  performance. They are mounted  in the illuminating
distribution board  and  used  in  guesthouses, block of flats, high buildings, squares,
airports, railway stations, plants  and  enterprises etc, in AC circuits 240V (single pole)up
to 415V (3 pole) 50/60Hz for protection of overload short circuit and for circuit change-over
in lighting system. Breaking capacity is 3KA.  The items comply with BS & IEC60947 standard