{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RB1066-1KG0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RB1066-1KG0","canonicalUrl":"https://aoctrl.com/siemens/3RB1066-1KG0","factsUrl":"https://aoctrl.com/api/mcp/products/3RB1066-1KG0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3RB10 series, solid-state overload relay, 200-540A, Class 10, MOD.S10/S12, with mounting rails for contactor mount on 3RT106 or separate mounting.","salesMarkdown":"The Siemens 3RB1066-1KG0 is a solid-state overload relay from the 3RB10 series, rated for motor protection in the 200 to 540 A range. The MOD.S10/S12 designation indicates the relay includes both standard and selectable trip classes, giving the panel builder flexibility to match the motor's starting profile. This relay ships with mounting rails for direct attachment to a Siemens 3RT106 contactor, or it can be mounted separately on a DIN rail. The separate-mounting option is useful when the contactor and overload need to be physically spaced apart in the panel — for thermal separation or to fit the enclosure layout. The 200-540 A current range covers large motor loads typical of pumps, compressors, and conveyors in industrial plants.","metaTitle":"Siemens 3RB1066-1KG0 Solid-State Overload Relay, 200-540A","metaDescription":"Siemens 3RB1066-1KG0 solid-state overload relay, 200-540A, Class 10. Current lifecycle stage. 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=384434&mlfb=3RB1066-1KG0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RB1066-1KG0/alternatives.json"},"ai":{"faq":[{"question":"What is the current rating range of the 3RB1066-1KG0?","answer":"The solid-state overload relay is rated for 200 to 540 A, with a Class 10 trip characteristic."},{"question":"Where can I buy the 3RB1066-1KG0 and get a price?","answer":"This part is sourced to order against an RFQ through independent distribution. Submit an RFQ for current availability and pricing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RB1066-1KG0","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/3RB1066-1KG0 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}}