{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VM9988-0AA12","brand":"Siemens","brandSlug":"siemens","productSlug":"3VM9988-0AA12","canonicalUrl":"https://aoctrl.com/siemens/3VM9988-0AA12","factsUrl":"https://aoctrl.com/api/mcp/products/3VM9988-0AA12","rawCanonicalId":null},"summary":{"shortDescription":"SENTRON 3VM9988-0AA12 auxiliary switch, changeover contacts type HQ, 7 mm width, 6 A thermal, for 3VM circuit breakers.","salesMarkdown":"The SENTRON 3VM9988-0AA12 is an auxiliary switch with changeover contacts (type HQ) designed as an accessory for 3VM circuit breakers. It carries a 6 A thermal current rating and fits a 7 mm wide slot in the breaker assembly. ## Switching ratings by duty Rated for AC-12 (resistive) at 6 A up to 240 V, and AC-15 (inductive) at 3 A across the same voltage range. On the DC side, DC-12 (resistive) handles 6 A at 12 V, 4 A at 24 V, and 2 A at 48 V; DC-13 (inductive) drops to 1 A at 12 V, 0.8 A at 24 V, and 0.4 A at 48 V. At higher DC voltages the ratings scale down further — 0.5 A at 110 V DC-12, 0.2 A at 110 V DC-13. ## Environmental and electrical robustness Minimum operating voltage is 250 V DC. The stripped length is 15 mm (0.6 in).","metaTitle":"SENTRON 3VM9988-0AA12 Auxiliary Switch, 6 A Thermal, 30×7×56","metaDescription":"SENTRON 3VM9988-0AA12 auxiliary switch for 3VM breakers. 6 A thermal, pollution degree 3, overvoltage cat III. Active production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"30 mm","Width":"7 mm","Height":"56 mm","Maximum":"16","Minimum":"20","Accessories":"Auxiliary switch","Stripped Length":"15 mm","Thermal Current":"6 A","lifecycle_stage":"current","Product Brand Name":"SENTRON","at AC-12 / at 12 V":"6 A","at AC-12 / at 24 V":"6 A","at AC-12 / at 48 V":"6 A","at AC-15 / at 12 V":"3 A","at AC-15 / at 24 V":"3 A","at AC-15 / at 48 V":"3 A","at DC-12 / at 12 V":"6 A","at DC-12 / at 24 V":"4 A","at DC-12 / at 48 V":"2 A","at DC-13 / at 12 V":"1 A","at DC-13 / at 24 V":"0.8 A","at DC-13 / at 48 V":"0.4 A","Degree Of Pollution":"3","Product Designation":"auxiliary switch","at AC-12 / at 125 V":"6 A","at AC-15 / at 125 V":"3 A","at DC-12 / at 110 V":"0.5 A","at DC-12 / at 250 V":"0.25 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","Design Of The Product":"Accessories for 3VA circuit breakers","at AC-12 / at 220/240 V":"6 A","at AC-15 / at 220/240 V":"3 A","Surge Voltage Resistance":"4 kV","operating voltage / at DC / rated value / minimum":"250 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/e60250629d590c9f1f0fe7b0451fde2c.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=575141&mlfb=3VM9988-0AA12","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VM9988-0AA12/alternatives.json"},"ai":{"faq":[{"question":"Who supplies 3VM9988-0AA12 and how is it quoted for volume purchases?","answer":"The 3VM9988-0AA12 is sourced and quoted to order against an RFQ through independent distribution. Volume pricing and availability are confirmed at quote time."},{"question":"What is 3VM9988-0AA12's listed depth (30 mm) on this component line?","answer":"The 3VM9988-0AA12 has a depth of 30 mm."},{"question":"What is 3VM9988-0AA12's listed width (7 mm) on this component line?","answer":"The 3VM9988-0AA12 has a width of 7 mm."},{"question":"Will 3VM9988-0AA12 drop into a panel that was specified around 5SY6020-7KL without rewiring?","answer":"No. The 3VM9988-0AA12 is a dedicated auxiliary switch for SENTRON 3VM circuit breakers, while 5SY6020-7KL is a miniature circuit breaker from a different series. They are not mechanically or electrically interchangeable without panel redesign."},{"question":"What compliance documentation does this brand provide for 3VM9988-0AA12 (RoHS, REACH, UL, IEC)?","answer":"The 3VM9988-0AA12 is a SENTRON accessory designed for 3VM breakers. Compliance documentation (RoHS, REACH, UL, IEC) is available from the manufacturer upon request; the part carries pollution degree 3 and overvoltage category III ratings per IEC 60947."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VM9988-0AA12","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/3VM9988-0AA12 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}