{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RB1246-1QG20","brand":"Siemens","brandSlug":"siemens","productSlug":"3RB1246-1QG20","canonicalUrl":"https://aoctrl.com/siemens/3RB1246-1QG20","factsUrl":"https://aoctrl.com/api/mcp/products/3RB1246-1QG20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RB1246-1QG20 overload relay, 6.3...25 A, Class 5...30, standalone, screw terminals, AC 110...120 V ground fault signaling.","salesMarkdown":"The Siemens 3RB1246-1QG20 is an overload relay for full motor protection, sized for S00/S0 contactor frames. It covers a 6.3...25 A setting range with adjustable trip Class 5...30, so you can match the thermal curve to the motor's starting profile — fast for pumps, slower for high-inertia loads. This is a standalone-installation unit with straight-through main circuit wiring and screw terminals on the auxiliary circuit. It offers manual, automatic, and remote reset options, plus integrated ground fault detection with monostable outputs for ground fault signaling at AC 110...120 V, 50/60 Hz. The 6.3...25 A setting range determines which motor FLA this relay can protect. The adjustable Class 5...30 lets you dial in the trip delay: Class 5 for fast protection on short-start motors, Class 30 for high-inertia loads like fans or centrifuges that take longer to reach speed. Integrated ground fault detection with monostable outputs means the relay can signal a ground fault condition separately from an overload — useful for systems where ground faults need distinct alarming or a different response than a standard trip. This relay mounts on a DIN rail in the control panel, sized for S00/S0 contactor frames. The straight-through main circuit wiring simplifies bus-bar or cable routing, and the screw terminals on the aux circuit are standard for panel builders — no special tooling needed.","metaTitle":"Siemens 3RB1246-1QG20 Overload Relay, 6.3-25 A, Class 5-30,","metaDescription":"Siemens 3RB1246-1QG20 overload relay for full motor protection, 6.3-25 A, Class 5-30, standalone installation, current lifecycle stage. Sourced to order.","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=459278&mlfb=3RB1246-1QG20","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RB1246-1QG20/alternatives.json"},"ai":{"faq":[{"question":"What is the setting range and trip class of this overload relay?","answer":"The setting range is 6.3...25 A with adjustable trip Class 5...30, allowing you to match the thermal curve to the motor's starting profile."},{"question":"Does this relay include ground fault detection?","answer":"Yes, it has integrated ground fault detection with monostable outputs for ground fault signaling at AC 110...120 V, 50/60 Hz."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RB1246-1QG20","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/3RB1246-1QG20 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}}