{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RU2916-3BJ21","brand":"Siemens","brandSlug":"siemens","productSlug":"3RU2916-3BJ21","canonicalUrl":"https://aoctrl.com/siemens/3RU2916-3BJ21","factsUrl":"https://aoctrl.com/api/mcp/products/3RU2916-3BJ21","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS terminal cover, 3RU2916-3BJ21, touch protection for ring cable lug connection, Size S00, 45mm wide, 9mm deep, clip-on.","salesMarkdown":"The 3RU2916-3BJ21 is a touch protection cover from the Siemens SIRIUS range, designed specifically for the infeed side of a 3RU21 overload relay in Size S00. It clips onto the relay to cover the ring cable lug connection points, providing shock protection per the product designation. It mounts via clip-on fastening onto the overload relay body, adding no extra DIN-rail footprint — the cover is 45 mm wide and only 9 mm deep, matching the relay's own width. Height is 14 mm. The clip-on design means no tools or additional fasteners are needed for installation. It sits on the line side of the 3RU21 overload relay, covering the ring-lug terminals that carry main circuit power.","metaTitle":"Siemens 3RU2916-3BJ21 SIRIUS terminal cover, 45mm wide, clip","metaDescription":"Siemens SIRIUS 3RU2916-3BJ21 touch protection cover for 3RU21 overload relay infeed side, Size S00, 45mm wide, 9mm deep, clip-on mounting, current production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Overload Relays"],"specifications":{"Depth":"9mm","Width":"45mm","title":"3RU2916-3BJ21","Height":"14mm","description":"touch protection cover for 3RU21 on the infeed side Size S00 Main circuit: ring cable lug Connection Contactor overload relay","During Storage":"-55 ... +80°C","lifecycle_stage":"current","During Operation":"-20 ... +60°C","Fastening Method":"clip-on","Product Brand Name":"SIRIUS","Product Designation":"terminal cover","Design Of The Product":"shock protection for ring cable lug connection"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/ec975b64955dcf6bd44e9884b3ffdb1b.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=89640&mlfb=3RU2916-3BJ21"},"ai":{"faq":[{"question":"What are the key dimensions of the 3RU2916-3BJ21?","answer":"Width is 45 mm, depth is 9 mm, and height is 14 mm. These dimensions match the Size S00 3RU21 overload relay footprint."},{"question":"Will the 3RU2916-3BJ21 fit a panel that uses a 3RT6023-1BW40 contactor?","answer":"The 3RU2916-3BJ21 is a terminal cover for a 3RU21 overload relay, not a direct accessory for the 3RT6023-1BW40 contactor. It clips onto the overload relay body, not the contactor. If the panel uses a 3RT6023-1BW40 contactor without a 3RU21 overload relay, this cover does not apply."},{"question":"What compliance documentation is available for the 3RU2916-3BJ21?","answer":"The evidence does not list specific compliance certifications (UL, CSA, CE, RoHS, REACH) for this part. Standard Siemens SIRIUS accessories typically carry CE marking for the European market. For specific documentation, include the compliance request in your RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RU2916-3BJ21","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/3RU2916-3BJ21 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}