{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RB1066-1LG0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RB1066-1LG0","canonicalUrl":"https://aoctrl.com/siemens/3RB1066-1LG0","factsUrl":"https://aoctrl.com/api/mcp/products/3RB1066-1LG0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3RB10 series solid-state overload relay, 300-630A, class 10, MOD.S10/S12, with mounting rails for contactor mount on 3TF68/69 or separate mounting.","salesMarkdown":"The 3RB1066-1LG0: The 300-630A range covers large motor loads — think 150-315 kW at 400V. Class 10 trip means it clears a stalled rotor within 10 seconds at 7.2x FLA, which is standard for standard-duty induction motors driving pumps, fans, and compressors. The MOD.S10/S12 designation indicates adjustable trip class settings, so you can dial it down to class 10 for faster protection on sensitive loads or up to class 30 for high-inertia starts. The mounting rails let you snap it onto a 3TF68 or 3TF69 contactor without extra brackets, keeping the panel footprint tight.","metaTitle":"Siemens 3RB1066-1LG0 solid-state overload relay, 300-630A","metaDescription":"Siemens 3RB1066-1LG0 solid-state overload relay, 300-630A, class 10. Active lifecycle. 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=402525&mlfb=3RB1066-1LG0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RB1066-1LG0/alternatives.json"},"ai":{"faq":[{"question":"What is the current rating range of 3RB1066-1LG0?","answer":"It is rated 300-630A, suitable for large motor loads typically in the 150-315 kW range at 400V."},{"question":"Where can I buy 3RB1066-1LG0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RB1066-1LG0","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/3RB1066-1LG0 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}}