Providing & fixing 250V, 50 Hz grade following concealed type subdistribution board made of l8-SwC MS sheet comPlete with hinged type door, built-in type locking arrangement, one no. 60 A capacity bus-bar with required no. ofholes thereon on insulators at both ends, copper blocks for neutral and earth terminal, SPMCBs Manufactured / Assembled and tesled in accordance with IEC / VDE / NEMA / BS / JIS along with relevant BDS IEC standard having minimum breaking capacity 6 / l0-KA with thermal over cunent and instantaneous etectromagnetic shon circuit release, necessary arrangement for fixing of MCBs duly painted with powder coating with epoxy polyester resin on all surfaces of board (gray / offwhite) etc. ln fronl side there will be tempered thick fiber glass of nrinimum 8 mm thickness with rubber gaskets etc. with SPMCBs accePted / approved by the Engineer-in-charge. i)4-Way SDB (with box size minimum 220mmx I32mmxl48mm) in-coming: I x 30 amps (6 KA) & out-going :4 x 5 / l0 / 15 amps SPMCB (6 KA)