supply of contactor (with diode) for ventilation fan unit. , contactor (with diode) for ventilation fan unit 1 & 2 condenser cd1.1,,cd1.2 , cd 2.1 cd 2.2 heater 1 & 2 : rated current : 16 a (at rated voltage & ac-3 utilization category) rated voltage : 690 v ac main pole: 3 no aux contact: 1nc, control voltage: 77-143 v dc with surge suppressor used in lhb ac coa ches as per bom(sl.no 55 of page no 37 )of rdso specification no. rdso/pe/spec/0184-2015(rev-2) or late st. make and model:cs965671ooo +cs965860000 (lk (l&t)), 3rt20181bf42+3rt29161jl00 (siemens) o r any other rdso approved make. [ warranty period: 12 months after the date of delivery ] ]