tender for push button switch to m/s l & ts type tk3 or m/s. bch type t-e-30.5 mmcomprising of 02 items (a) shrouded push button actuator black colour to m/s l & ts cat no.ss 91519 orm/s. bch cat no. tsfb-b & (b) element/contact block 1 no+1 nc with fixing screws to m/s l & ts catno.ss 90375 or m/s. bch cat no. 050n1.