{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA9978-0BA24","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA9978-0BA24","canonicalUrl":"https://aoctrl.com/siemens/3VA9978-0BA24","factsUrl":"https://aoctrl.com/api/mcp/products/3VA9978-0BA24","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON, shunt trip auxiliary release, 3VA9978-0BA24, 380-500 V AC 50/60 Hz, 650 VA, 4 kV surge, 3 slots, IP20, active.","salesMarkdown":"The Siemens SENTRON 3VA9978-0BA24 is a shunt trip auxiliary release designed for remote tripping of 3VA4 and 3VA51 through 3VA64 molded case circuit breakers. It operates on a 380-500 V AC supply at 50/60 Hz, drawing up to 650 VA apparent power during the trip pulse. The 650 VA apparent power consumption is the peak demand during the shunt trip coil energization — this is a momentary pulse, not a continuous load, but the control transformer feeding it must be sized to handle that inrush without voltage sag. The 4 kV surge voltage resistance (Overvoltage Category III) means the internal insulation withstands transient overvoltages typical of industrial distribution panels, so it's rated for direct connection to the breaker's line side without additional suppression. Physically it's compact at 65.1 mm high, 21.7 mm wide, and 31.2 mm deep — designed to snap into the accessory slots on the left side of the 3VA4/3VA5 breaker frame. The three accessory slots accept up to three auxiliary releases or auxiliary switches; this shunt trip occupies one slot. Stripped length for the screw terminals is 10 mm (0.4 in).","metaTitle":"Siemens 3VA9978-0BA24 SENTRON Shunt Trip, 380-500 VAC","metaDescription":"Siemens 3VA9978-0BA24 SENTRON shunt trip accessory for 3VA4/3VA5 breakers. 380-500 VAC, 50/60 Hz, 650 VA. 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":"3VA9978-0BA24","Height":"65.1 mm","Maximum":"16","Minimum":"20","Accessories":"Auxiliary release","description":"SHUNT TRIP FLEXIBLE 380-500 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":"650 VA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/1c35ebc6726dde46ea02b38ffaf93a7a.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=650517&mlfb=3VA9978-0BA24"},"ai":{"faq":[{"question":"What is 3VA9978-0BA24 used for?","answer":"It's a shunt trip accessory that provides remote tripping capability for Siemens 3VA4 and 3VA5 series molded case circuit breakers, allowing an emergency stop or remote signal to open the breaker."},{"question":"Where can I buy 3VA9978-0BA24?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What voltage does the 3VA9978-0BA24 shunt trip operate on?","answer":"It operates on 380-500 V AC at 50/60 Hz, with a maximum apparent power consumption of 650 VA during the trip pulse."},{"question":"Does 3VA9978-0BA24 fit 3VA1 or 3VA2 breakers?","answer":"No, it is specifically designed for 3VA4 and 3VA51 through 3VA64 frames. It will not mechanically fit the smaller 3VA1/3VA2 breaker accessory slots."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA9978-0BA24","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/3VA9978-0BA24 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}}