supply of set of rotary switch , set of rotary switches (03 items, 04 nos.), conforming to clw specification no. clw/es/3/ 0068 (alt. c) or latest with reference date as tender closing date, comprising of: (1) failure mode operatio n switch to abb doc. no. hbtb585580 r1032 or latest with reference date as tender closing date (01 no.) , (2) bogie cut-out switch to abb doc. no. hbtb585580 r1022 or latest with reference date as tender clo sing date (01 no.), (3) vigilance device cut-off switch to abb doc. no. hbtb585580 r0034 or latest with r eference date as tender closing date (02 nos.), [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ]