{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RF3320-1DA24","brand":"Siemens","brandSlug":"siemens","productSlug":"3RF3320-1DA24","canonicalUrl":"https://aoctrl.com/siemens/3RF3320-1DA24","factsUrl":"https://aoctrl.com/api/mcp/products/3RF3320-1DA24","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RF33 solid-state contactor, 1-pole, 3RF3320-1DA24, AC-1 / 20 A / 40 °C, 48-460 V load, 110-230 V AC control, screw terminal, short-circuit-proof with B miniature circuit breaker.","salesMarkdown":"The Siemens 3RF3320-1DA24 is a 1-pole SIRIUS 3RF33 solid-state contactor rated for AC-1 resistive loads at 20 A continuous at 40 °C ambient. That 20 A figure is the thermal current — the load it carries without a heatsink derate — so for a resistive heater bank or lighting string at 40 °C panel ambient, this is the number that governs the circuit. The load voltage range spans 48-460 V AC, and the control coil is 110-230 V AC. The part is specified as short-circuit-proof when paired with a B-curve miniature circuit breaker, meaning the MCB clears a fault before the SSR fails — a coordination detail that saves replacing the contactor after a short. It belongs to the SIRIUS 3RF33 family, Siemens' compact solid-state contactor line for resistive and light inductive switching where silent, wear-free operation matters — no coil hum, no contact bounce, and no arc erosion over millions of cycles. ## Integration notes Screw terminals, 1-pole form factor. Packaging dimensions 105 x 27 x 122 mm — it's a narrow DIN-rail footprint, 27 mm wide, so it fits a standard 18 mm pitch rail with room for a neighboring device. The control voltage is 110-230 V AC, so verify your panel's control transformer taps before wiring. The short-circuit-proof coordination with a B-curve MCB means the upstream protection is sized to the contactor's let-through, not the full fault current — check the Siemens coordination tables if you're replacing a different brand's SSR.","metaTitle":"Siemens 3RF3320-1DA24 SIRIUS 3RF33 Solid-State Contactor, 20","metaDescription":"Siemens 3RF3320-1DA24 SIRIUS 3RF33 solid-state contactor, 1-pole, 20 A AC-1 at 40 °C, 48-460 V load, 110-230 V AC control. Active production, screw terminal. RFQ for lead time.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Solid State Relays"],"specifications":{"title":"3RF3320-1DA24","Group Code":"R711","description":"solid-state contactor 1-pole 3RF3 AC-1 / 20 A / 40 °C 48-460 V / 110-230 V AC short-circuit-proof with B miniature circuit breaker screw terminal","Product Group":"3725","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 3RF33 solid-state contactors, 1-pole","lifecycle_stage":"current","Packaging Quantity":"1","Export Control Regulations":"AL : N / ECCN : 9N9999","Packaging dimensions (L x W x H)":"105.00 x 27.00 x 122.00 mm","Compliance with the substance restrictions according to RoHS directive":"Since: 15-01-24","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/5d961dd18c0dd0d0cd9462825c6ff83e.pdf","sourceUrl":"https://sieportal.siemens.com/en-ae/products-services/detail/3RF3320-1DA24?tree=CatalogTree"},"ai":{"faq":[{"question":"What are the key ratings for 3RF3320-1DA24?","answer":"AC-1 resistive load rating of 20 A at 40 °C ambient. Load voltage 48-460 V AC. Control supply 110-230 V AC. Short-circuit-proof with a B-curve miniature circuit breaker. Screw terminal connection."},{"question":"What compliance documentation is available for this part?","answer":"RoHS compliant since 15 January 2024. REACH Article 33 applies due to lead content above 0.1% (CAS 7439-92-1). Export control classification is AL: N / ECCN: 9N9999."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RF3320-1DA24","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/3RF3320-1DA24 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}}