supply of miniature circuit breaker, 63amps, isi marked, instantaneous tripping range: c, four pole with 3pp ( pp=protected pole ) , 415v ac, conforming to is / iec: 60898-1:2015, with rated circuit current capacity 10ka, fixed unadjustable time current characteristics and suitable for use in protection of industrial, commercial and domestic installations. mcbs shall be suitable for 50 hz ac main supplies and have facility for termination of aluminium cable. mcbs shall have fixing arrangement for mounting on steel rails of top hat section rail th:35- 7.5, conforming to is / iec 60715:2017. [ warranty period: 30 months after the date of delivery ] divisional gsd adra , ser west bengal 157.00 numbers