{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RB1246-1QB30","brand":"Siemens","brandSlug":"siemens","productSlug":"3RB1246-1QB30","canonicalUrl":"https://aoctrl.com/siemens/3RB1246-1QB30","factsUrl":"https://aoctrl.com/api/mcp/products/3RB1246-1QB30","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3RB1246-1QB30 overload relay, 6.3...25 A, class 5...30, DC 24 V, screw terminal, for full motor protection size S00/S0.","salesMarkdown":"## Integration Notes The 3RB1246-1QB30: Mounts individually on the contactor or directly to the panel — size S00/S0 footprint matches the Siemens 3RT2 contactor range. The main circuit uses a current transformer (ST type) for sensing, so no series power loss through a heater element. Auxiliary wiring lands on screw terminals; torque to the manufacturer's spec for reliable ground-fault detection. The DC 24 V coil holds at nominal, drops out below approximately 18 V. For commissioning, set the trip class (5–30) via the front dial to match the motor start profile — class 10 for standard starts, class 20 for high-inertia loads, class 30 for soft-start or long acceleration.","metaTitle":"Siemens 3RB1246-1QB30 Overload Relay, 6.3-25 A, Current","metaDescription":"Siemens 3RB1246-1QB30 overload relay, 6.3-25 A, class 5-30, DC 24 V. Lifecycle stage current. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Overload Relays"],"specifications":{"lifecycle_stage":"current"}},"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=502462&mlfb=3RB1246-1QB30","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RB1246-1QB30/alternatives.json"},"ai":{"faq":[{"question":"What is the closest alternative to the 3RB1246-1QB30 in the same family?","answer":"Within the Siemens 3RB12 series, other variants with the same S00/S0 footprint and trip-class range may serve as drop-in replacements. Verify the current setting range (6.3–25 A) and auxiliary supply voltage (DC 24 V) match your application before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RB1246-1QB30","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/3RB1246-1QB30 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}}