{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RQ4018-2AM08-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RQ4018-2AM08-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3RQ4018-2AM08-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RQ4018-2AM08-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RQ4 coupling relay, narrow design, output coupler with integrated relay, 24 V DC, 1 change-over contact, spring-loaded push-in terminal, 6.2 mm width, 6 A thermal current.","salesMarkdown":"The Siemens 3RQ4018-2AM08-0AA0 is an output coupler with an integrated relay from the SIRIUS 3RQ4 family, designed in a narrow 6.2 mm housing. It operates on a 24 V DC coil (pick-up range 0.7–1.25 x Us) and provides a single change-over contact rated for a thermal current of 6 A. This part belongs to the SIRIUS 3RQ4 series of coupling relays, a line Siemens positions for space-constrained control cabinets. The 6.2 mm width per channel lets you pack more isolation points per meter of DIN rail compared to a standard 14 mm interface relay. The 6 A thermal current (Ith) is the continuous carry rating through the contacts at ambient temperature. For a coupling relay this size, that figure governs the resistive load it can switch directly—think solenoid valves, indicator lamps, or small contactor coils. If your load draws more than 6 A steady-state, you need an interposing contactor, not this relay. The 24 V DC coil with a 0.7–1.25 x Us operating range means it picks up reliably between about 16.8 V and 30 V. That tolerance covers a sagging 24 V supply in a cabinet with multiple loads switching simultaneously. Below 16.8 V the relay drops out, which is typical for DC coils—plan your voltage drop across long cable runs accordingly. The single change-over contact (1 CO) gives you one normally-open and one normally-closed set from the same common. That is enough to switch a load and signal its state back to a PLC input, or to interlock two circuits, but not enough for redundant safety paths—those need force-guided contacts in a different housing.","metaTitle":"Siemens 3RQ4018-2AM08-0AA0 SIRIUS 3RQ4 Coupling Relay, 6 A","metaDescription":"Siemens SIRIUS 3RQ4 output coupler with integrated relay. 24 V DC coil, 1 change-over contact, 6 A thermal current. Spring-loaded 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":"3RQ4018-2AM08-0AA0","Group Code":"R711","description":"output coupler with integrated relay, 24 V DC (0.7-1.25 x Us), 1 change-over 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":"Reach Information"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/0866631ec7fd70392154bfd1ad6f88cc.pdf","sourceUrl":"https://sieportal.siemens.com/en-ae/products-services/detail/3RQ4018-2AM08-0AA0?tree=CatalogTree"},"ai":{"faq":[{"question":"What compliance documentation is available for this part?","answer":"RoHS compliance is confirmed effective 26 September 2024. REACH Article 33 candidate list information is available from Siemens. Export controls are AL: N / ECCN: EAR99."},{"question":"What are the key ratings for this coupling relay?","answer":"24 V DC coil with 0.7–1.25 x Us operating range, one change-over contact, thermal current 6 A, spring-loaded push-in terminals, and a width of 6.2 mm."},{"question":"What is the group code and product group for this item?","answer":"Group code is R711; product group is 4950."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RQ4018-2AM08-0AA0","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/3RQ4018-2AM08-0AA0 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}}