{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RQ4018-2AM08-0AX0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RQ4018-2AM08-0AX0","canonicalUrl":"https://aoctrl.com/siemens/3RQ4018-2AM08-0AX0","factsUrl":"https://aoctrl.com/api/mcp/products/3RQ4018-2AM08-0AX0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RQ4 coupling relay, 3RQ4018-2AM08-0AX0, output coupler with integrated relay, 24 V DC (0.7-1.25 x Us), 1 change-over contact, spring-loaded push-in terminal, width 6.2 mm, thermal current 6 A.","salesMarkdown":"The Siemens 3RQ4018-2AM08-0AX0 is an output coupler relay from the SIRIUS 3RQ4 family, narrow design. It packs a 24 V DC coil (pick-up range 0.7–1.25 x Us), a single change-over contact, and spring-loaded push-in terminals into a 6.2 mm wide housing — that's the narrowest slice in the SIRIUS coupling relay line, sized for dense DIN-rail panels where every millimeter of rail counts. Rated thermal current is 6 A, meaning the contact path is sized for signal-level loads and small auxiliary circuits — think PLC digital outputs driving contactor coils, indicator lamps, or solenoid valves. The push-in terminal accepts solid or ferruled stranded wire without a tool; strip to 8–10 mm and seat it. No screw torque to verify, no vibration loosening over time. RoHS compliance is confirmed since 26 September 2024, covering the substance restrictions under Directive 2011/65/EU. REACH Article 33 information is available on request per the current candidate list. At 6.2 mm wide, ten of these fit in the space of one typical 62 mm terminal block — useful for grouping multiple isolated output channels in a single slice. The spring-loaded push-in terminals reduce wiring time compared to screw-clamp variants; no calibration of torque drivers, no re-torquing after thermal cycling. Coil draws from a 24 V DC supply; the 0.7–1.25 x Us range means it holds in at 16.8 V and must not exceed 30 V. If your control voltage sags during motor starting, verify the DC bus stays above dropout. The single change-over contact (1 CO) gives both N/O and N/C paths — useful for signaling back to a PLC input while switching the load. ## What the 6 A thermal current means for your load The 6 A thermal current (Ith) is the continuous current the contact can carry in free air at 40 °C ambient. For resistive loads (AC-1), derating is minimal — you can switch 6 A all day. For inductive DC loads or motor starters, the making/breaking capacity is lower; the contact is designed for pilot duty, not main power switching. If your load is a 24 V DC solenoid pulling 2 A inrush, this relay handles it cleanly. If you're switching a 1.5 kW motor contactor coil, verify the inrush stays under the contact's rated making capacity.","metaTitle":"Siemens 3RQ4018-2AM08-0AX0 SIRIUS Coupling Relay, 24 V DC, 6","metaDescription":"Active Siemens SIRIUS 3RQ4 output coupler relay, 24 V DC coil, 1 change-over contact, 6 A thermal, spring-loaded push-in terminals, 6.2 mm wide. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Control Accessories"],"specifications":{"title":"3RQ4018-2AM08-0AX0","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, (with painted APCB)","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/800216aece4d67c12d505ddb4fce035d.pdf","sourceUrl":"https://sieportal.siemens.com/en-ae/products-services/detail/3RQ4018-2AM08-0AX0?tree=CatalogTree"},"ai":{"faq":[{"question":"What compliance documentation is available for this relay?","answer":"RoHS compliance is confirmed since 26 September 2024. REACH Article 33 information is available per the current candidate list. Export control is AL: N / ECCN: EAR99."},{"question":"What is the group code and product group for this part?","answer":"The group code is R711 and the product group is 4950."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RQ4018-2AM08-0AX0","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/3RQ4018-2AM08-0AX0 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}}