{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA9988-0AB35","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA9988-0AB35","canonicalUrl":"https://aoctrl.com/siemens/3VA9988-0AB35","factsUrl":"https://aoctrl.com/api/mcp/products/3VA9988-0AB35","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON, Short-circuit signaling switch, 3VA9988-0AB35, 7 mm width, 30 mm depth, 0.3 A thermal current, changeover contacts type HQ.","salesMarkdown":"The Siemens SENTRON 3VA9988-0AB35 is a short-circuit signaling switch designed as an accessory for 3VA1 250/400/630 molded-case circuit breakers. It mounts directly on the breaker to provide remote indication of a short-circuit trip event via changeover contacts (type HQ). The switch is 7 mm wide and 30 mm deep, sized to snap into the accessory slot on the side of the breaker without increasing the panel cutout or DIN-rail footprint. That 7 mm width is the key dimension for fit — it matches the standard accessory slot on 3VA frames. Rated for 0.3 A thermal current (Ith), the switch handles signaling loads, not power. The contact ratings are broken out by duty class: 0.3 A at AC-12 (resistive) and AC-15 (inductive) at both 12 V and 24 V, and 0.1 A at DC-12 at 12 V and 24 V. For DC-13 (solenoid/relay loads) it drops to 0.07 A at 12 V and 24 V. The minimum operating voltage is 24 V DC. It can handle transient spikes on the control circuit without failing. Stripped length is 15 mm (0.6 in) for the screw-clamp terminals. The switch provides changeover (CO) contacts — one normally-open and one normally-closed — so it can signal both trip and normal status to a PLC input or alarm annunciator.","metaTitle":"Siemens 3VA9988-0AB35 SENTRON Short-Circuit Signaling Switch","metaDescription":"Siemens SENTRON 3VA9988-0AB35 short-circuit signaling switch for 3VA breakers. 7mm width, 30mm depth, 0.3A thermal current. Active production, sourced to order. Get a quote.","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":"Short-circuit signaling switch","Stripped Length":"15 mm","Thermal Current":"0.3 A","lifecycle_stage":"current","Product Brand Name":"SENTRON","at AC-12 / at 12 V":"0.3 A","at AC-12 / at 24 V":"0.3 A","at AC-15 / at 12 V":"0.3 A","at AC-15 / at 24 V":"0.3 A","at DC-12 / at 12 V":"0.1 A","at DC-12 / at 24 V":"0.1 A","at DC-13 / at 12 V":"0.07 A","at DC-13 / at 24 V":"0.07 A","Degree Of Pollution":"3","Product Designation":"Short-circuit signaling switch","Overvoltage Category":"III","Stripped Length [In]":"0.6 in","Design Of The Product":"Accessories for 3VA circuit breakers","Surge Voltage Resistance":"4 kV","operating voltage / at DC / rated value / minimum":"24 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=77943&mlfb=3VA9988-0AB35","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA9988-0AB35/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA9988-0AB35 and get a price?","answer":"The part is sourced and quoted to order against an RFQ through independent distribution. Submit a request for current pricing and availability — confirmed at quote time."},{"question":"What is the width and depth of 3VA9988-0AB35?","answer":"Width is 7 mm, depth is 30 mm, height is 56 mm. The 7 mm width is the critical fit dimension for the accessory slot on 3VA breakers."},{"question":"What is the closest functional second-source for 3VA9988-0AB35?","answer":"There is no direct second-source for this accessory. It is proprietary to the Siemens SENTRON 3VA platform. The peer MCBs listed (5SY4140-7, 5SL4363-7, 5SL6006-7) are different products — miniature circuit breakers, not signaling switches — and are not drop-in replacements."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA9988-0AB35","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/3VA9988-0AB35 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}}