{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA9988-0AB34","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA9988-0AB34","canonicalUrl":"https://aoctrl.com/siemens/3VA9988-0AB34","factsUrl":"https://aoctrl.com/api/mcp/products/3VA9988-0AB34","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON short-circuit signaling switch, 3VA9988-0AB34, changeover contacts type HQ, 7mm width, 6A thermal current, accessory for 3VA1 250/400/630 breakers.","salesMarkdown":"The Siemens 3VA9988-0AB34 is a SENTRON short-circuit signaling switch — a changeover contact block that snaps into the 7 mm wide accessory slot on 3VA1 molded-case circuit breakers (250, 400, and 630 A frames). It's the part that tells your PLC or annunciator that the breaker tripped on a fault, not that someone hit the handle. Rated at 6 A thermal current (Ith), the switch carries AC-15 pilot-duty loads at 3 A up to 240 V and DC-13 solenoid loads at 0.8 A at 24 V — enough to drive a contactor coil or a panel indicator without an interposing relay. The DC-13 rating drops to 0.4 A at 48 V and 0.1 A at 250 V, so keep that in mind if you're switching a DC holding coil at higher voltages. At 7 mm wide and 56 mm tall, it fits the narrowest slot on the breaker's right side — you won't lose a full module width for a single alarm contact. The 30 mm depth sits flush with the breaker body, so it doesn't steal wireway space in a tight panel. ## Integration & Environment Surge voltage resistance is 4 kV, so it handles switching transients from motor starters and contactors without welding its own contacts shut. Stripped length is 15 mm (0.6 in) — standard for screw-clamp terminals on these Siemens accessories. The spring-cage or box lug on the breaker itself takes the same strip length, so you're not changing your wire-prep routine.","metaTitle":"Siemens 3VA9988-0AB34 SENTRON Short-Circuit Signaling Switch","metaDescription":"Siemens 3VA9988-0AB34 SENTRON short-circuit signaling switch, 6A thermal current, 7mm wide, for 3VA1 breakers. Active production, sourced to order.","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":"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":"Short-circuit 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/4ade8baab979c72db43a3ba4439d60c2.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=312507&mlfb=3VA9988-0AB34","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA9988-0AB34/alternatives.json"},"ai":{"faq":[{"question":"What is the 3VA9988-0AB34 used for?","answer":"It's a short-circuit signaling switch that mounts in the 7 mm accessory slot on Siemens 3VA1 circuit breakers (250, 400, and 630 A frames). When the breaker trips on a fault, the switch changes over its contacts to send a signal to a PLC, light, or alarm."},{"question":"What are the key ratings for this switch?","answer":"6 A thermal current (Ith). AC-15 pilot duty: 3 A at 24 V, 3 A at 240 V. DC-13 solenoid duty: 0.8 A at 24 V, 0.4 A at 48 V, 0.1 A at 250 V. Pollution degree 3, overvoltage category III, 4 kV surge resistance."},{"question":"How do I get pricing and availability for the 3VA9988-0AB34?","answer":"Submit an RFQ through this listing. Availability and current pricing are confirmed at quote time through our independent distribution channels."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA9988-0AB34","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/3VA9988-0AB34 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}}