{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA9978-0BA23","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA9978-0BA23","canonicalUrl":"https://aoctrl.com/siemens/3VA9978-0BA23","factsUrl":"https://aoctrl.com/api/mcp/products/3VA9978-0BA23","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON, Shunt trip (auxiliary release), 3VA9978-0BA23, 208-277 V AC 50/60 Hz, 3 slots, 31.2 mm depth, 21.7 mm width, 65.1 mm height.","salesMarkdown":"The Siemens SENTRON 3VA9978-0BA23 is a shunt trip — an auxiliary release that remotely trips a circuit breaker when voltage is applied. It's designed for the 3VA4 and 3VA5 (frames 1-4) and 3VA6 (frames 1-4) molded-case breakers. That's a healthy coil; make sure your control transformer can handle the surge. Mechanically, this accessory snaps into the three designated slots on the breaker's side. Physical footprint is 31.2 mm deep, 21.7 mm wide, and 65.1 mm tall — it doesn't add width to the breaker's DIN-rail envelope, but it does project slightly beyond the breaker face. The terminals accept conductors with a 10 mm strip length.","metaTitle":"Siemens SENTRON 3VA9978-0BA23 Shunt Trip, 208-277 V AC","metaDescription":"Siemens SENTRON shunt trip accessory for 3VA4/3VA5/3VA6 breakers. 208-277 V AC, 50/60 Hz. 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":"3VA9978-0BA23","Height":"65.1 mm","Maximum":"16","Minimum":"20","Accessories":"Auxiliary release","description":"SHUNT TRIP FLEXIBLE 208-277 V AC 50/60 HZ ACCESSORY FOR 3VA4 and 3VA51 up to 3VA54 and 3VA61 up to 3VA64","Number Of Slots":"3","Product version":"Auxiliary release","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","Surge Voltage Resistance":"4 kV","Apparent Power Consumption / Maximum":"720 V·A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/c4bd7f2314cbbf9193501886a9a60969.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=650516&mlfb=3VA9978-0BA23"},"ai":{"faq":[{"question":"Where can I buy 3VA9978-0BA23 and get a price?","answer":"We source this part through independent distribution and quote it to order against an RFQ. Submit an RFQ for current availability and pricing."},{"question":"What is the apparent power consumption of this shunt trip?","answer":"Maximum apparent power consumption is 720 VA. That's the inrush figure; steady-state draw is lower, but the control transformer must be sized for the peak."},{"question":"What breakers does 3VA9978-0BA23 fit?","answer":"It fits the SENTRON 3VA4, 3VA5 (frames 1-4), and 3VA6 (frames 1-4) molded-case breakers. It occupies three accessory slots on the side of the breaker."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA9978-0BA23","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/3VA9978-0BA23 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}}