{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA9988-0AB12","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA9988-0AB12","canonicalUrl":"https://aoctrl.com/siemens/3VA9988-0AB12","factsUrl":"https://aoctrl.com/api/mcp/products/3VA9988-0AB12","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON tripped signaling switch, changeover contacts type HQ (7MM), accessory for 3VA1 and 3VA20 up to 3VA25 circuit breakers, 6 A thermal, 30 mm depth, 7 mm width, 56 mm height.","salesMarkdown":"The 3VA9988-0AB12: The contact block carries a 6 A thermal continuous rating. That's the maximum steady current through the signal circuit — sized for typical 24 VDC PLC inputs drawing 10–20 mA, so there's ample headroom. The real selection driver is the switching capacity under load: at AC-15 (solenoid/contactor control) it's rated 3 A at 24 V and 3 A at 125 V, which covers most pilot-duty applications. For DC inductive loads (DC-13), the rating drops to 0.8 A at 24 V and 0.1 A at 250 V — that's the number to watch if you're switching DC contactor coils or relay coils directly. The 4 kV surge voltage resistance and overvoltage category III mean it's designed for the distribution side of the panel, not just control-circuit isolation. This switch clips into the accessory slot on the left side of the 3VA breaker body — no DIN rail space consumed, no additional wiring duct required. The 7 mm width and 30 mm depth mean it stays within the breaker's own envelope. Stripped length is 15 mm (0.6 in) for the screw terminals.","metaTitle":"Siemens 3VA9988-0AB12 Trip Alarm Switch, 6 A Thermal, 30 mm","metaDescription":"Siemens SENTRON 3VA9988-0AB12 tripped signaling switch for 3VA1/3VA20-3VA25 breakers. Active production. 6 A thermal, 4 kV surge. Sourced to order. Request RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Breaker Accessories"],"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":"$10.67","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=422709&mlfb=3VA9988-0AB12","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA9988-0AB12/alternatives.json"},"ai":{"faq":[{"question":"What is the 3VA9988-0AB12 used for?","answer":"It's a tripped signaling switch (changeover contacts, type HQ) that mounts inside SENTRON 3VA1 and 3VA20-3VA25 circuit breakers to report a trip event to a PLC, alarm light, or SCADA input."},{"question":"What are the key switching ratings for 3VA9988-0AB12?","answer":"Thermal continuous current is 6 A. AC-15 pilot duty: 3 A at 24 V, 3 A at 125 V, 3 A at 240 V. DC-13 inductive load: 0.8 A at 24 V, 0.4 A at 48 V, 0.1 A at 250 V. Surge voltage resistance is 4 kV."},{"question":"Where can I buy 3VA9988-0AB12?","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":"Will 3VA9988-0AB12 fit a panel designed for 5SY4140-7?","answer":"No — the 3VA9988-0AB12 is an internal accessory for 3VA series breakers, while the 5SY4140-7 is a miniature circuit breaker in the 5SY series. They are not mechanically interchangeable; the 3VA9988-0AB12 mounts inside the breaker, not on a DIN rail."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA9988-0AB12","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/3VA9988-0AB12 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}}