{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA9978-0BA25","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA9978-0BA25","canonicalUrl":"https://aoctrl.com/siemens/3VA9978-0BA25","factsUrl":"https://aoctrl.com/api/mcp/products/3VA9978-0BA25","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON auxiliary release / shunt trip, 600 V AC 50/60 Hz, 300 VA coil, 4 kV surge voltage resistance, 31.2 mm depth, for 3VA4 and 3VA5/3VA6 breakers.","salesMarkdown":"## Shunt trip for 3VA molded-case breakers The Siemens SENTRON 3VA9978-0BA25 is a shunt trip (auxiliary release) designed for the 3VA4, 3VA51–3VA54, and 3VA61–3VA64 molded-case circuit breaker families. It provides remote tripping via a 600 V AC control signal at 50/60 Hz, drawing up to 300 VA apparent power at the coil. Dimensions are 31.2 mm deep × 21.7 mm wide × 65.1 mm tall — it clips into the breaker's accessory slot without increasing the panel cutout. ## Integration into the breaker The shunt trip occupies one of the three accessory slots on 3VA4/3VA5/3VA6 frames. Strip length for the control wiring is 10 mm (0.4 in). The 21.7 mm width allows side-by-side mounting of multiple accessories in the same breaker. No DIN-rail or panel cutout change is needed — it installs entirely within the breaker's existing envelope.","metaTitle":"Siemens SENTRON 3VA9978-0BA25 Shunt Trip, 600 V AC, 300 VA","metaDescription":"Siemens SENTRON shunt trip accessory for 3VA4/3VA5/3VA6 breakers. 600 V AC 50/60 Hz, 300 VA coil, 4 kV surge. Active production, sourced to order. Depth 31.2 mm.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Breaker Accessories"],"specifications":{"Depth":"31.2 mm","Width":"21.7 mm","title":"3VA9978-0BA25","Height":"65.1 mm","Maximum":"16","Minimum":"20","Accessories":"Auxiliary release","description":"SHUNT TRIP FLEXIBLE 600 V AC 50/60 HZ ACCESSORY FOR 3VA4 and 3VA51 up to 3VA54 and 3VA61 up to 3VA64","Number Of Slots":"3","Stripped Length":"10 mm","lifecycle_stage":"current","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Accessories","Overvoltage Category":"III","Stripped Length [In]":"0.4 in","Design Of The Product":"auxiliary release","Surge Voltage Resistance":"4 kV","Apparent Power Consumption / Maximum":"300 VA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/03c65bc206be6e33677db98ce7cdf91e.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=650518&mlfb=3VA9978-0BA25"},"ai":{"faq":[{"question":"Where can I buy 3VA9978-0BA25 and how is it quoted?","answer":"The part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is the closest functional second-source to 3VA9978-0BA25?","answer":"The 5SY4140-7 is a SENTRON miniature circuit breaker, not a shunt trip accessory — it is not a functional equivalent. The 3VA9978-0BA25 is specific to 3VA molded-case frames and has no direct second-source from the 5SY series."},{"question":"What compliance documentation does Siemens provide for this shunt trip?","answer":"The SENTRON brand typically provides CE, UL, and CSA declarations for the 3VA accessory line. Specific certification markings are confirmed at order; RoHS and REACH compliance documentation is available on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA9978-0BA25","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/3VA9978-0BA25 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}}