supply of set of contactors for cab ac of conventional locomotiveset of contactors for cab ac of conventional locomotive,set of contactors for cab ac of conventional locomotive as per rdso spec rdso/2007/el/sp ec/0055 (latest rev.) consist of (i) 4 pole 25 amps contactor, 415 v ac 50 hz, with 1 no+1 nc add on block , coil voltage 220 v ac as per model non of nhd series of bch make conforming to iec: 60947-4-1:2023, is : 13947-4-1. qty-01 no./set (ii) 3-pole ac power contactor current rating 40 amp. 415 v ac 50 hz, 220 vac coil voltage 50 hz with add on auxiliary contact block (1 no+1 nc) to bch freedom series type ce15e-ac-1 or equivalent in l&t/abb/havells/siemens/schneider/c&s. qty-01 no./set [ warranty period: 30 months a fter the date of delivery ] ] senior secton engineer madhya pradesh 12.00 set