supply of procurement of contactor 3 pole, 50 amp capacity suitable for 415 v etcprocurement of contactor 3 pole, 50 amp capacity suitable for 415 v etc,contactor 3 pole, 32 amp. capacity suitable for 690 v, 50 hz ac, coil voltage 77-143 v dc with auxiliary contact 1 nc with surge suppressor as per rdso common b ill of material vide rdso letter no. el/7.1.108/mssbc dt. 17/09/21 to abb model no. tal 30- 30-10+rv5/250 or schneider model no. lc1d32fd or l & t model no. mdx32 or siemens mo del no. 3rt20271bf40+3rt29261jl00. [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ]