{"product_id":"asco-k473670-003-transfer-switch-board-300-series-group-1","title":"ASCO K473670-003 Transfer Switch Board 300 Series Group 1","description":"\u003cdiv\u003e\u003cp\u003eASCO K473670-003 transfer switch control board is the 240-volt variant of the ASCO Series 300 Group 1 controller PC board used inside automatic transfer switches. The part is listed as 473670-003 (K473670-003) for 240 V operation, and ASCO documents it as a discontinued 300 Series Group 1 controller with a suggested replacement part number 955717-001. This board is designed as a drop-in replacement for the Group 1 controller PC board and, where specified, voltage sensing is configured via DIP switches on the circuit board. In aftermarket listings, the K473670-003\/473670-003 controller is described with features such as solid-state voltage sensing, interchangeable heavy‑duty power transformers, a high‑efficiency switching power supply, and an RS-485 full‑duplex communications port with ASCObus II protocol, along with support for local and remote annunciators. It is intended for use with ASCO 300 Series Group 1 automatic transfer switches to manage transfers between two power sources, using the existing cover, tray, and mounting hardware. \u003c\/p\u003e\u003c\/div\u003e","brand":"ASCO","offers":[{"title":"New","offer_id":51660219810094,"sku":null,"price":43.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_410c1415-f62c-41e4-b36d-bf0df77b059d.jpg?v=1769534722","url":"https:\/\/plgautomation.com\/products\/asco-k473670-003-transfer-switch-board-300-series-group-1","provider":"PLG Automation ","version":"1.0","type":"link"}