supply of class b & c surge protection device (spd) -type i & ii withvisual indication and pot ential free contact to remote monitoring asper rdso specification no. spec rdsospn 165 2023 v4 amd1 and iec standard 61643 for single line 230v ac applicationwith handling lightning surges of 10/350 micros econds and switchingsurges of 8/20 microseconds. one set consists of 3 nos of spd (twonos of b class (l- n, n-e) and one no. of c class( l-n) all enclosedin a box with kema/vde/nabl accredited/any in

West Central Railway has invited bids for the supply of class b & c surge protection device (spd) -type i & ii withvisual indication and pot ential free contact to remote monitoring asper rdso specification no. spec rdsospn 165 2023 v4 amd1 and iec standard 61643 for single line 230v ac applicationwith handling lightning surges of 10/350 micros econds and switchingsurges of 8/20 microseconds. one set consists of 3 nos of spd (twonos of b class (l- n, n-e) and one no. of c class( l-n) all enclosedin a box with kema/vde/nabl accredited/any international laboratory certified as per latest iec 61643-11-2011 standard.technical specification for class b & class c spd is enclosed. class b & c surge protection device required with three modules only.make-merson,obo, pheonix or similiar. [ warranty period: 12 months after the date of delivery ] ].. Please refer to the tender document for project value and EMD details. Interested bidders can submit applications until 23 September 2026, with the technical opening scheduled for 23 September 2026.