{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VM9988-0AB12","brand":"Siemens","brandSlug":"siemens","productSlug":"3VM9988-0AB12","canonicalUrl":"https://aoctrl.com/siemens/3VM9988-0AB12","factsUrl":"https://aoctrl.com/api/mcp/products/3VM9988-0AB12","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON tripped signaling switch, 3VM9988-0AB12, changeover contacts type HQ, 7 mm width, 6 A thermal, accessory for 3VM circuit breakers.","salesMarkdown":"The Siemens SENTRON 3VM9988-0AB12 is a tripped signaling switch — a snap-on accessory for 3VM circuit breakers that reports a trip event via changeover contacts (type HQ). It mounts directly onto the breaker's side, occupying a single 7 mm module width on the DIN rail, and requires no additional wiring to the breaker's trip mechanism. Rated thermal current is 6 A (Ith). Switching capacity varies by duty: at AC-12 (resistive loads) it handles 6 A across 12 V to 240 V; at AC-15 (inductive / solenoid loads) it's rated 3 A across the same voltage range. For DC circuits, DC-12 (resistive) delivers 6 A at 12 V, 4 A at 24 V, 2 A at 48 V; DC-13 (inductive) is 1 A at 12 V, 0.8 A at 24 V, 0.4 A at 48 V, and derates further at 110 V and 250 V. Dimensions: 7 mm wide, 30 mm deep, 56 mm high — clips onto the left or right side of a 3VM breaker without expanding the DIN-rail footprint beyond the breaker's own width. Stripped length of 15 mm (0.6 in) for the screw terminals. Designed as an accessory for 3VM circuit breakers. It signals a tripped condition to a PLC or indicator lamp, so the panel builder can wire the changeover contact into the control circuit without running separate sense wires to the breaker terminals.","metaTitle":"Siemens 3VM9988-0AB12 Tripped Signaling Switch, 6 A, 7 mm","metaDescription":"Siemens SENTRON 3VM9988-0AB12 tripped signaling switch for 3VM breakers. 6 A thermal, AC-12/DC-12 rated. 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":"Tripped signaling 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":"Tripped signaling 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/708b7f255234ed5a61de54fa95866457.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=575143&mlfb=3VM9988-0AB12","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VM9988-0AB12/alternatives.json"},"ai":{"faq":[{"question":"What is the width of 3VM9988-0AB12?","answer":"7 mm — it occupies a single module slot on the DIN rail alongside the 3VM breaker."},{"question":"Will 3VM9988-0AB12 drop into a panel specified around 5SY6020-7KL without rewiring?","answer":"No. The 3VM9988-0AB12 is a tripped signaling switch designed specifically for 3VM circuit breakers. The 5SY6020-7KL is a miniature circuit breaker, not an accessory — they serve different functions and are not footprint-compatible."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VM9988-0AB12","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/3VM9988-0AB12 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}}