{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA9978-0BF22","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA9978-0BF22","canonicalUrl":"https://aoctrl.com/siemens/3VA9978-0BF22","factsUrl":"https://aoctrl.com/api/mcp/products/3VA9978-0BF22","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON, Accessories, Time-delay device, 3VA9978-0BF22, fixed delay 230 V AC, 100 ms min, 72.3 mm depth.","salesMarkdown":"The Siemens 3VA9978-0BF22 is a SENTRON time-delay accessory designed specifically for use with 3VA undervoltage releases. It introduces a fixed OFF-delay of at least 100 ms when powered at 230 V AC, which means the undervoltage release holds in for that window after control power drops — enough to ride through a brief sag or transfer without dropping the main breaker. This module mounts as an add-on to the 3VA undervoltage release, not as a standalone panel component. The physical envelope — 72.3 mm deep, 44.8 mm wide, 57.5 mm high — fits within the breaker's accessory footprint, so no additional DIN rail space is consumed. Wire termination accepts a stripped length of 10 mm (0.4 in).","metaTitle":"Siemens 3VA9978-0BF22 SENTRON Time-Delay Device, 230 V AC, 1","metaDescription":"Siemens 3VA9978-0BF22 SENTRON time-delay accessory for 3VA undervoltage releases. Fixed 100 ms delay at 230 V AC. Active production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Breaker Accessories"],"specifications":{"Depth":"72.3 mm","Width":"44.8 mm","title":"3VA9978-0BF22","Height":"57.5 mm","Maximum":"16","Minimum":"20","Accessories":"Time-delay device","description":"time-delay device fixed delay 230V AC accessory for: 3VA undervoltage release","Product version":"Time-delay device","Stripped Length":"10 mm","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Accessories","Stripped Length [In]":"0.4 in","OFF-delay time / minimum":"100 ms"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/ded9a3d15d26f5043d477d7ec9e802f1.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=650541&mlfb=3VA9978-0BF22"},"ai":{"faq":[{"question":"Where can I buy 3VA9978-0BF22 and how do I get a price?","answer":"The 3VA9978-0BF22 is sourced to order against an RFQ through independent distribution. Submit a request for quote; availability and current pricing are confirmed at quote time."},{"question":"What is the minimum OFF-delay time for 3VA9978-0BF22?","answer":"The minimum OFF-delay time is 100 ms at 230 V AC, fixed — not adjustable."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA9978-0BF22","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/3VA9978-0BF22 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:47:38.189Z","lastPublished":"2026-07-22T19:47:38.189Z","indexable":true}}