{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RQ4038-1AB00","brand":"Siemens","brandSlug":"siemens","productSlug":"3RQ4038-1AB00","canonicalUrl":"https://aoctrl.com/siemens/3RQ4038-1AB00","factsUrl":"https://aoctrl.com/api/mcp/products/3RQ4038-1AB00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RQ4 coupling relay, narrow design, 3RQ4038-1AB00, input coupler with integrated relay, 24 V AC/DC, 1 change-over contact, screw terminal, 6.2 mm width, 6 A thermal current.","salesMarkdown":"The Siemens 3RQ4038-1AB00 is an input coupler with an integrated relay from the SIRIUS 3RQ4 family, built in a narrow 6.2 mm housing. It switches a single change-over contact rated for a thermal current of 6 A, with a 24 V AC/DC coil. The screw terminals and compact width make it a straightforward fit for dense DIN-rail control panels where every millimeter of rail space counts. The 6 A thermal current (Ith) is the continuous current the contacts can carry in free air — it's the limit for resistive loads. For inductive loads like small contactor coils or solenoid valves, derate to the AC-15 or DC-13 rating (not listed here, but typical for this class). The 24 V AC/DC coil means it works on either supply, simplifying panel wiring when both voltages are present. At 6.2 mm wide, you can pack roughly 16 of these per 100 mm of DIN rail — a real advantage when the panel designer is counting millimeters. The 6.2 mm width means it occupies one slot in a terminal-block-style layout — useful for isolating low-power signals from a PLC output to a field device, or coupling a 24 V signal to a higher-voltage load.","metaTitle":"Siemens 3RQ4038-1AB00 SIRIUS Coupling Relay, 24 V AC/DC, 6 A","metaDescription":"Siemens SIRIUS 3RQ4038-1AB00 input coupler with integrated relay. 24 V AC/DC coil, 1 change-over contact, 6 A thermal current, 6.2 mm wide. Active production. RFQ for BOM pricing.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Control Accessories"],"specifications":{"title":"3RQ4038-1AB00","Group Code":"R711","description":"input coupler with integrated relay, 24 V AC/DC, 1 change-over contact, screw terminal, 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":"Reach Information"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/10df8a89eedd2db26d016a5846a2a96a.pdf","sourceUrl":"https://sieportal.siemens.com/en-ae/products-services/detail/3RQ4038-1AB00?tree=CatalogTree"},"ai":{"faq":[{"question":"What are the key ratings for this coupling relay?","answer":"It has a 24 V AC/DC coil, one change-over contact rated for 6 A thermal current (Ith), and uses screw terminals. The housing is 6.2 mm wide for compact DIN-rail mounting."},{"question":"What compliance documentation is available for this part?","answer":"The part is RoHS compliant since 26 September 2024, and REACH Article 33 information is available on request. Export control classification is AL: N / ECCN: EAR99."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RQ4038-1AB00","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/3RQ4038-1AB00 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}}