{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA9978-0BA22","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA9978-0BA22","canonicalUrl":"https://aoctrl.com/siemens/3VA9978-0BA22","factsUrl":"https://aoctrl.com/api/mcp/products/3VA9978-0BA22","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON auxiliary release shunt trip, 3VA9978-0BA22, 110-127 V AC 50/60 Hz, 4 kV surge voltage resistance, 31.2 mm depth.","salesMarkdown":"The Siemens 3VA9978-0BA22 is a SENTRON-series shunt trip (auxiliary release) designed for remote tripping of 3VA4 and 3VA51 through 3VA54, and 3VA61 through 3VA64 molded-case circuit breakers. It operates on a 110-127 V AC supply at 50/60 Hz, drawing a maximum apparent power of 810 VA. This is the component that lets a control system, E-stop circuit, or remote pushbutton open the breaker without an operator at the handle. The 810 VA inrush at coil pickup is momentary; the holding power is lower, but the control transformer or PLC output driving it must be sized for that peak. Physical footprint is 21.7 mm wide by 65.1 mm high by 31.2 mm deep — it clips into the accessory slot on the left side of the compatible 3VA breaker frame. The stripped length for the screw terminals is 10 mm (0.4 in). Three slots on the accessory housing accommodate the coil connections and a microswitch for remote status. No DIN-rail space consumed beyond the breaker itself.","metaTitle":"Siemens 3VA9978-0BA22 Shunt Trip, 110-127 VAC, SENTRON","metaDescription":"Siemens SENTRON 3VA9978-0BA22 shunt trip auxiliary release for 3VA4/3VA5/3VA6 breakers. 110-127 VAC, 50/60 Hz, 4 kV surge. Active production. Quoted to order.","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":"3VA9978-0BA22","Height":"65.1 mm","Maximum":"16","Minimum":"20","Accessories":"Auxiliary release","description":"SHUNT TRIP FLEXIBLE 110-127 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":"810 VA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$40.64","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/1c09e78930725bb8c82a957b7b47fe63.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=650515&mlfb=3VA9978-0BA22"},"ai":{"faq":[{"question":"What is the closest functional alternative to 3VA9978-0BA22?","answer":"The 5SY4140-7 is a SENTRON miniature circuit breaker, not a shunt trip — it serves a completely different function (overcurrent protection vs. remote trip). There is no direct second-source for this specific auxiliary release; the 3VA9978-0BA22 is the only shunt trip listed for the 3VA4/3VA5/3VA6 frame family. A panel specified around a 5SY4140-7 MCB cannot accept this shunt trip without rewiring the breaker assembly."},{"question":"Where can I buy 3VA9978-0BA22 and get current pricing?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commercial response."},{"question":"What compliance documentation does Siemens provide for 3VA9978-0BA22?","answer":"The product carries Overvoltage Category III and Pollution Degree 3 ratings per IEC 60947. Standard Siemens documentation includes a declaration of conformity to applicable EU directives (CE) and the manufacturer's datasheet. RoHS and REACH compliance data is available from Siemens upon request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA9978-0BA22","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/3VA9978-0BA22 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}}