{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VM9988-0AA13","brand":"Siemens","brandSlug":"siemens","productSlug":"3VM9988-0AA13","canonicalUrl":"https://aoctrl.com/siemens/3VM9988-0AA13","factsUrl":"https://aoctrl.com/api/mcp/products/3VM9988-0AA13","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON auxiliary switch, 7 mm wide, changeover contacts, for 3VM/3VA circuit breakers, 0.3 A AC-15 / 0.07 A DC-13, 4 kV surge rating.","salesMarkdown":"The Siemens SENTRON 3VM9988-0AA13 is a 7 mm wide auxiliary switch — a changeover contact block that snaps into the accessory slot on 3VM and 3VA molded-case circuit breakers. It signals breaker state (open/closed/tripped) back to a PLC or status lamp without tapping the main power path. At 30 mm deep and 56 mm tall, it tucks into the breaker profile without protruding past the DIN-rail edge — no extra panel depth needed beyond what the breaker already occupies. Rated 0.3 A in AC-15 duty at 24 V — AC-15 covers solenoid and electromagnetic loads, so this switch handles control relays and contactor coils typical in a panel. At DC-13 (solenoid with parallel diode suppression), the rating drops to 0.07 A at 24 V; the inductive DC break is harder on the contacts, so respect that lower limit for DC pilot circuits. The thermal current limit Ith matches the AC-15 figure at 0.3 A — the contacts are sized for that continuous current regardless of load type. Overvoltage category III and a 4 kV surge voltage resistance mean it's rated for fixed-installation distribution panels, not just final circuits. Strip the wire 15 mm (0.6 in) for the screw-clamp terminals. The 7 mm width lets you stack multiple auxiliaries across the breaker's accessory slots without consuming extra DIN-rail space — useful when you need both a NO signal to the PLC and an NC interlock for a safety circuit.","metaTitle":"Siemens SENTRON 3VM9988-0AA13 Auxiliary Switch, 7 mm, 0.3 A","metaDescription":"Siemens SENTRON 3VM9988-0AA13 auxiliary switch for 3VA/3VM breakers. 7 mm wide, 0.3 A AC-15/DC-13, 4 kV surge. Active production, sourced to order.","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","Product version":"Accessories for 3VA circuit breakers","Stripped Length":"15 mm","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":"auxiliary switch","Overvoltage Category":"III","Stripped Length [In]":"0.6 in","Surge Voltage Resistance":"4 kV","Thermal current limit Ith":"0.3 A","Rated operational voltage Ue at AC 50 Hz":"24 V","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=575142&mlfb=3VM9988-0AA13","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VM9988-0AA13/alternatives.json"},"ai":{"faq":[{"question":"What is the 3VM9988-0AA13 used for?","answer":"It is a changeover auxiliary switch that mounts inside 3VM and 3VA SENTRON circuit breakers to provide remote status indication (open/closed/tripped) to a PLC, HMI, or control relay."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VM9988-0AA13","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/3VM9988-0AA13 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}}