This is a brand name requirement for a LineBacker Retro Fit/Upgrade Kit for a Siemens Interrupter. This is a brand name requirement through Southern States LLC. ALL QUESTIONS REGARDING THIS REQUIREMEN... This is a brand name requirement for a LineBacker Retro Fit/Upgrade Kit for a Siemens Interrupter. This is a brand name requirement through Southern States LLC. ALL QUESTIONS REGARDING THIS REQUIREMENT SHALL BE SUBMITTED TO THE CONTRACTING OFFICER IN WRITING VIA EMAIL TO HAMMANS@WAPA.GOV. NO PHONE CALLS WILL BE ACCEPTED.