{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RQ4055-2SM30","brand":"Siemens","brandSlug":"siemens","productSlug":"3RQ4055-2SM30","canonicalUrl":"https://aoctrl.com/siemens/3RQ4055-2SM30","factsUrl":"https://aoctrl.com/api/mcp/products/3RQ4055-2SM30","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RQ4 coupling relay, narrow design, 3RQ4055-2SM30 output optocoupler, 24 V DC, 1 NO contact, spring-loaded push-in terminal, width 6.2 mm, thermal current 6 A.","salesMarkdown":"The Siemens 3RQ4055-2SM30 is an output optocoupler relay from the SIRIUS 3RQ4 family, built in the narrow 6.2 mm housing for high-density cabinet layouts. It switches a single normally-open contact rated for a thermal current of 6 A, driven by a 24 V DC control signal. The optocoupler input gives galvanic isolation between the PLC or controller output and the load circuit — useful when you need to break ground loops or protect a 24 V DC digital output from a separate power domain. ## Lifecycle and compliance posture This part carries an active lifecycle status — Siemens lists it as current production, so no last-time-buy or obsolescence pressure on the BOM line. RoHS compliance is confirmed effective 26 September 2024, and the REACH candidate list declaration flags lead (CAS 7439-92-1) above 0.1% w/w, which is a standard disclosure for electronic components with solder joints. Export classification is AL: N / ECCN: EAR99, meaning no special licensing for most destinations. ## Sourcing decision Because it's an active, standard-product-class item (class A), the 3RQ4055-2SM30 is a straightforward line-item to specify into a BOM. The 6 A thermal current and 24 V DC coil are common values, so the part slots into control panels without special coordination. For a firm commitment, submit an RFQ — this is a quoted-to-order line, not a shelf-pick gamble.","metaTitle":"Siemens 3RQ4055-2SM30 SIRIUS Coupling Relay, 6 A, 24 V DC","metaDescription":"Siemens SIRIUS 3RQ4055-2SM30 output optocoupler relay, 24 V DC coil, 1 NO contact, 6 A thermal current, push-in terminals, 6.2 mm wide. Active production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Control Accessories"],"specifications":{"title":"3RQ4055-2SM30","Group Code":"R711","description":"output optocoupler, 24 V DC, 1 NO contact, spring-loaded terminal (push-in), width 6.2 mm, thermal current 6 A","Product Group":"4950","Product class":"A: Standard product which is a stock item could be returned within the returns guidelines/period.","Quantity Unit":"1 Piece","Product Family":"SIRIUS 3RQ4 coupling relays, narrow design","lifecycle_stage":"current","Packaging Quantity":"1","Export Control Regulations":"AL : N / ECCN : EAR99","Packaging dimensions (L x W x H)":"95.00 x 93.00 x 65.00 mm","Compliance with the substance restrictions according to RoHS directive":"Since: 26-09-24","REACH Art. 33 Duty to inform according to the current list of candidates":"Lead CAS-No. 7439-92-1 > 0,1 % (w / w)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/5dcc0a87a8f4ef88effea1cf72ee75a2.pdf","sourceUrl":"https://sieportal.siemens.com/en-ae/products-services/detail/3RQ4055-2SM30?tree=CatalogTree"},"ai":{"faq":[{"question":"What are the key ratings for this coupling relay?","answer":"It is an output optocoupler with a 24 V DC coil, one normally-open contact, a thermal current rating of 6 A, and spring-loaded push-in terminals. The housing is 6.2 mm wide, part of the SIRIUS 3RQ4 narrow design family."},{"question":"What compliance documentation does Siemens provide for this part?","answer":"RoHS compliance is confirmed effective 26 September 2024. The REACH Article 33 declaration lists lead (CAS 7439-92-1) above 0.1% w/w. Export controls are AL: N / ECCN: EAR99."},{"question":"What is the group code and product group for the 3RQ4055-2SM30?","answer":"The Siemens group code is R711, and the product group is 4950. These are internal classification codes used for cataloguing and procurement matching."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RQ4055-2SM30","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/3RQ4055-2SM30 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:47:38.189Z","lastPublished":"2026-07-22T19:47:38.189Z","indexable":true}}