Tender For supply of zero speed switch sensor, type-ps2000d, a g make, sensor dia -30 mm, sensing distance- 12 to 15 mm, , zero speed switch control unit, a g make, type: -ess/jb/ii, input supply: 110/230 v ac - 50 hz, conta , pcs, bss trip indicator cum controller, make- ag, type-ps01d-1