{"product_id":"abb-426e1170-loss-of-excitation-protection-relay","title":"ABB 426E1170 Loss Of Excitation Protection Relay","description":"\u003cdiv\u003e\n\u003cp\u003eThe ABB 426E1170 Loss of Excitation Protection Relay is a dedicated protection module designed for ABB’s Circuit Shield Power T\u0026amp;D protection systems, monitoring the excitation condition of connected machinery and initiating protective actions when excitation is lost. \u003c\/p\u003e\n\u003cp\u003eIdentified by the part number 426E1170, this relay supports a 48\/125 VDC control supply (DD4), aligning with ABB’s low‑voltage supervisory schemes used in substation protection panels. \u003c\/p\u003e\n\u003cp\u003eIn practical terms, the device provides loss‑of‑excitation protection for synchronous generators and related equipment within medium- to high-voltage distribution environments, helping maintain system stability by detecting excitation faults and triggering appropriate protective responses. \u003c\/p\u003e\n\u003cp\u003eThe 426E1170 is typically integrated within ABB protection architectures alongside other Circuit Shield components to form a cohesive, redundant protective strategy for power delivery infrastructure.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"ABB","offers":[{"title":"Used Surplus - Excellent Condition","offer_id":51656892350766,"sku":null,"price":290.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_a3791efd-89be-418a-b084-18025528a02d.jpg?v=1769464108","url":"https:\/\/plgautomation.com\/products\/abb-426e1170-loss-of-excitation-protection-relay","provider":"PLG Automation ","version":"1.0","type":"link"}