{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1SVR427071R0000","brand":"ABB","brandSlug":"abb","productSlug":"1SVR427071R0000","canonicalUrl":"https://aoctrl.com/abb/1SVR427071R0000","factsUrl":"https://aoctrl.com/api/mcp/products/1SVR427071R0000","rawCanonicalId":null},"summary":{"shortDescription":"ABB 1SVR427071R0000 CP-A RU redundancy unit with two inputs rated up to 20 A each and a single output rated up to 40 A, built to parallel two DC power supplies into one redundant feed for PLC and control panels.","salesMarkdown":"## What it is, in panel-builder terms The ABB 1SVR427071R0000 is the CP-A RU redundancy unit — a DIN-rail module that sits between two parallel DC power supplies and the downstream load, diode-OR'ing them into a single output so either supply can carry the panel on its own if the other drops. It accepts two inputs rated up to 20 A each and delivers one output rated up to 40 A, which is the sizing rule the redundancy unit imposes on the upstream supplies: each feed has to be capable of carrying the full panel load by itself. ## How the ratings drive the build The 2 × 20 A input / 1 × 40 A output class is what fixes the rest of the BOM around it — pick two supplies that each meet the panel's full load current, not supplies that split the load, because the redundancy contract only holds when either unit alone can sustain the bus. ## Handling and mounting note At 0.86 kg the unit has real mass on the DIN rail — it wants solid end-stop clamping on both sides, not just the spring of the rail alone, especially in cabinets that see vibration. ## Sourcing posture","metaTitle":"ABB 1SVR427071R0000 CP-A RU Redundancy Unit, 2×20 A in / 1×4","metaDescription":"ABB 1SVR427071R0000 CP-A RU redundancy unit: 2 inputs up to 20 A and 1 output up to 40 A. Specified into PLC power-supply redundancy builds; quoted to order against an RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["General Purpose Relays"],"specifications":{"Part #":"1SVR427071R0000","Weight":"0.86 kgs","Category":"PLCs and Accessories","Sub Category":"PLC Expansion Modules","Top Category":"PLCs & HMIs","lifecycle_stage":"current"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/1SVR427071R0000/alternatives.json"},"ai":{"faq":[{"question":"What are the input and output current ratings of the CP-A RU?","answer":"Two inputs rated up to 20 A each and one output rated up to 40 A, which is the envelope the upstream supplies have to be sized against."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/abb/1SVR427071R0000","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/abb/1SVR427071R0000 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}