{"product_id":"allen-bradley-1746-a2-slc-500-2-slot-expansion-rack","title":"Allen-Bradley 1746-A2 SLC 500 2-Slot Expansion Rack","description":"\u003cdiv\u003e\u003cp\u003eAllen-Bradley 1746-A2 is a two-slot expansion rack for the SLC 500 family, marketed as a fixed I\/O expansion chassis that adds two expansion slots to a SLC 500 backplane. It is designed for use with the original fixed-style SLC controllers (such as the SLC 100) and is compatible with SLC 500 modular or fixed backplanes, enabling additional I\/O without replacing the main processor. The two expansion slots accept 1746-series I\/O modules, allowing closer-to-field connections and more compact wiring in small to mid-size automation setups. Common use cases include extending discrete I\/O for sensors, actuators, and limit switches in manufacturing lines or basic process-control tasks, where expanding the controller’s I\/O footprint with a compact 2-slot rack is advantageous.\u003c\/p\u003e\u003c\/div\u003e","brand":"Allen-Bradley","offers":[{"title":"Used Surplus - Excellent Condition","offer_id":51658963714350,"sku":null,"price":260.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_eb800255-99f5-49fe-8770-b60a07b1c4db.jpg?v=1769526066","url":"https:\/\/plgautomation.com\/products\/allen-bradley-1746-a2-slc-500-2-slot-expansion-rack","provider":"PLG Automation ","version":"1.0","type":"link"}