{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA9978-0AB11","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA9978-0AB11","canonicalUrl":"https://aoctrl.com/siemens/3VA9978-0AB11","factsUrl":"https://aoctrl.com/api/mcp/products/3VA9978-0AB11","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON, tripped signaling switch, accessories for 3VA circuit breakers, 10 A thermal current, 15 mm stripped length.","salesMarkdown":"The Siemens 3VA9978-0AB11 is a SENTRON tripped signaling switch, an accessory designed for 3VA series circuit breakers. It provides a remote indication when the breaker trips, with a thermal current limit (Ith) of 10 A and a stripped length of 15 mm for wiring integration. The 10 A thermal current (Ith) is the continuous current the switch contacts can carry without exceeding temperature rise limits — it's the hard ceiling for the signaling circuit, not a switching rating. For actual load switching, the ratings break down by duty: AC-12 (resistive loads and solid-state outputs) handles 10 A up to 240 V, while AC-15 (contactor coils, solenoid valves) drops to 6 A at the same voltage. On DC control circuits, DC-13 (switching electromagnets) is the relevant curve: 3 A at 24 V, but only 0.2 A at 110 V — that inductive kick derates fast as voltage climbs.","metaTitle":"Siemens 3VA9978-0AB11 SENTRON Tripped Signaling Switch, 10 A","metaDescription":"Siemens 3VA9978-0AB11 SENTRON tripped signaling switch for 3VA breakers. 10 A thermal current, pollution degree 3, overvoltage cat III. Active lifecycle, sourced to order. Request","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Breaker Accessories"],"specifications":{"title":"3VA9978-0AB11","Maximum":"14","Minimum":"19","Accessories":"Tripped signaling switch","description":"trip alarm switch changeover contacts type HP (14mm) accessory for: 3VA4/5/6","Product version":"Accessories for 3VA circuit breakers","Stripped Length":"15 mm","lifecycle_stage":"current","Product Brand Name":"SENTRON","at AC-12 / at 12 V":"10 A","at AC-12 / at 24 V":"10 A","at AC-12 / at 48 V":"10 A","at AC-15 / at 12 V":"6 A","at AC-15 / at 24 V":"6 A","at AC-15 / at 48 V":"6 A","at DC-12 / at 12 V":"6 A","at DC-12 / at 24 V":"6 A","at DC-12 / at 48 V":"2 A","at DC-13 / at 12 V":"3 A","at DC-13 / at 24 V":"3 A","at DC-13 / at 48 V":"0.8 A","Degree of pollution":"3","Product Designation":"Tripped signaling switch","at AC-12 / at 125 V":"10 A","at AC-12 / at 400 V":"6 A","at AC-12 / at 600 V":"2 A","at AC-15 / at 125 V":"6 A","at AC-15 / at 600 V":"0.6 A","at DC-12 / at 110 V":"0.6 A","at DC-12 / at 250 V":"0.3 A","at DC-13 / at 110 V":"0.2 A","at DC-13 / at 250 V":"0.1 A","Overvoltage category":"III","Stripped Length [In]":"0.6 in","at AC-12 / at 220/240 V":"10 A","at AC-12 / at 380/400 V":"6 A","at AC-15 / at 220/240 V":"6 A","at AC-15 / at 380/400 V":"2 A","Thermal current limit Ith":"10 A","Rated operational voltage Ue with DC":"250 V","Tension assignée de tenue aux chocs":"4 kV","Rated operational voltage Ue at AC 50 Hz":"600 V","operating voltage / at AC / acc. to CSA and UL":"600 V","operating voltage / at DC / acc. to CSA and UL":"250 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/d2be2bde4955a42ae51cc0251e33328c.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=650508&mlfb=3VA9978-0AB11"},"ai":{"faq":[{"question":"What is the thermal current rating of the 3VA9978-0AB11?","answer":"The thermal current limit (Ith) is 10 A, which is the continuous current the switch contacts can carry."},{"question":"Where can I buy the 3VA9978-0AB11?","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 — no stock figures or lead-time numbers are published here."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA9978-0AB11","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/3VA9978-0AB11 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}}