supply of bus coupler control of hog a / b modebus coupler control of hog a / b mode,bus coupler control of hog a / b mode auxiliary contactor (s2k10 & s2k11) with 24v dc coil, aux. 3no+ 1nc suitable for switch board cabinet for hog compliant lslrd coaches as per rdso specifica tion no. rdso/pe/spec/tl/0195-2019 (rev.-0) or latest. make- as per bill of material, page no- 24, sl. no- 1 6, schneider part no. ca3kn31bd or siemens part no. 3rh21311bb40 or abb part no. tkc6- 31z or l&t pa rt no. mo0 dc or c&s electric part no. tca3dn31bd/ tca3dn31fd. [ warranty period: 30 months after t he date of delivery ] ] => limited