{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RF2320-1AA24","brand":"Siemens","brandSlug":"siemens","productSlug":"3RF2320-1AA24","canonicalUrl":"https://aoctrl.com/siemens/3RF2320-1AA24","factsUrl":"https://aoctrl.com/api/mcp/products/3RF2320-1AA24","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS solid-state contactor, single-phase, 3RF2320-1AA24, 20 A AC-51 rated, 110-230 V AC control supply, 22.5 mm width, zero-point switching, screw terminals.","salesMarkdown":"## Single-phase SSR in a 22.5 mm footprint The Siemens 3RF2320-1AA24 is a SIRIUS solid-state contactor — single-phase, zero-point switching, rated 20 A in AC-51 duty (resistive loads) and 17.6 A per UL 508. Control supply is 110-230 V AC, 50/60 Hz. The AC-51 rating of 20 A is the resistive-heater or lighting load curve — the full current the SSR can carry continuously when switching resistive elements. For motor or inductive loads, you derate to the AC-53a curve (not listed here, but the part's 500 mA minimum operational current means it handles small loads cleanly without dropout). The 17.6 A UL 508 figure is the US-code equivalent for general industrial control panels; if your BOM specifies UL 508A, this is the number that governs the branch circuit rating. Zero-point switching means the thyristor fires only near the voltage zero-crossing, which minimizes inrush and conducted EMI — important if the contactor feeds heater banks or transformer primaries where soft-start behavior is preferred. The ON and OFF delays are both 40 ms plus a half-wave maximum, so the response is deterministic within one mains cycle. The control terminals take 1x 0.5-2.5 mm² solid or 2x 0.5-1.0 mm². Dimensions are 22.5 mm wide × 95 mm high × 120 mm deep.","metaTitle":"Siemens 3RF2320-1AA24 SIRIUS Solid-State Contactor, 20 A AC-","metaDescription":"Siemens 3RF2320-1AA24 SIRIUS single-phase solid-state contactor, 20 A AC-51, 110-230 V control, 22.5 mm wide, zero-point switching. Current lifecycle. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Solid State Relays"],"specifications":{"Depth":"120 mm","Solid":"1x (0.5 ... 2.5 mm²), 2x (0.5 ... 1.0 mm²)","Width":"22.5 mm","at AC":"2 mA","title":"3RF2320-1AA24","Height":"95 mm","at 50 Hz":"110 ... 230 V","at 60 Hz":"110 ... 230 V","description":"Solid-state contactor 1-phase 3RF2 AC 51 / 20 A / 40 °C 48-460 V / 110-230 V AC screw terminal","1 Rated Value":"50 Hz","2 Rated Value":"60 Hz","ON-delay time":"40 ms; additionally max. one half-wave","During Storage":"-55 ... +80 °C","OFF-delay time":"40 ms; additionally max. one half-wave","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"screw fixing and snap-on mounting on standard mounting rail 35 mm according to IEC 60715","Product Function":"zero-point switching","For Main Contacts":"7 mm","I2t value maximum":"1 800 A²·s","Solid Or Stranded":"1.5 ... 6 mm²","Product Brand Name":"SIRIUS","Degree Of Pollution":"3","Product Designation":"solid-state contactor","at NH design usable":"3NA6807","Derating Temperature":"40 °C","at 50 Hz rated value":"48 ... 460 V","at 60 Hz rated value":"48 ... 460 V","at AC-51 rated value":"20 A","Design Of The Product":"single-phase","Side-By-Side Mounting":"Yes","of DIAZED fuse usable":"5SB2711","of NEOZED fuse usable":"5SE2320","For Main Current Circuit":"screw-type terminals","Operational Current Minimum":"500 mA","at AC in hot operating state":"20 W","Substance Prohibitance (Date)":"05/28/2009","Insulation Voltage Rated Value":"600 V","Operating Frequency Rated Value":"50 ... 60 Hz","according to UL 508 rated value":"17.6 A","Reverse Current Of The Thyristor":"10 mA","for AWG cables for main contacts":"2x (14 ... 10)","For Auxiliary And Control Circuit":"screw-type terminals","control current at AC rated value":"15 mA","For Auxiliary And Control Contacts":"7 mm","Without Load Current Share Typical":"3.5 W","at AC-51 according to IEC 60947-4-3":"13.2 A","Surge Current Resistance Rated Value":"600 A","Symmetrical Line Frequency Tolerance":"5 Hz","Of The Auxiliary And Control Contacts":"M3","at AC in hot operating state per pole":"20 W","reference code according to EN 61346-2":"Q","At Cylindrical Design 10 X 38 Mm Usable":"3NW6005-1; These fuses have a smaller rated current than the semiconductor relays","At Cylindrical Design 14 X 51 Mm Usable":"3NW6105-1; These fuses have a smaller rated current than the semiconductor relays","At Cylindrical Design 22 X 58 Mm Usable":"3NW6205-1; These fuses have a smaller rated current than the semiconductor relays","due to burst according to IEC 61000-4-4":"2 kV / 5 kHz behavior criterion 2","number of NC contacts for main contacts":"0","number of NO contacts for main contacts":"1","reference code according to IEC 81346-2":"Q","1 Of The Accessories That Can Be Ordered":"terminal cover","4 Of The Accessories That Can Be Ordered":"load monitoring","Finely Stranded With Core End Processing":"1x (0.5 ... 2.5 mm²), 2x (0.5 ... 1.0 mm²)","Number Of Poles For Main Current Circuit":"1","Finely Stranded Without Core End Processing":"1x (0.5 ... 2.5 mm²), 2x (0.5 ... 1.0 mm²)","For Main Contacts With Screw-Type Terminals":"18 ... 22 lbf·in","at AC initial value for signal <1> detection":"90 V","number of CO contacts for auxiliary contacts":"0","number of NC contacts for auxiliary contacts":"0","number of NO contacts for auxiliary contacts":"0","shock resistance according to IEC 60068-2-27":"15g / 11 ms","Type Of Voltage Of The Control Supply Voltage":"AC","vibration resistance according to IEC 60068-2-6":"2g","for AWG cables for auxiliary and control contacts":"1x (AWG 20 ... 12)","electrostatic discharge according to IEC 61000-4-2":"4 kV contact discharging / 8 kV air discharging, behavior criterion 2","at 50 Hz full-scale value for signal<0> recognition":"40 V","at 60 Hz full-scale value for signal<0> recognition":"40 V","Surge Voltage Resistance Of Main Circuit Rated Value":"6 kV","Installation Altitude At Height Above Sea Level Maximum":"1 000 m","conducted HF interference emissions according to CISPR11":"Class A for industrial environment","field-bound HF interference emission according to CISPR11":"Class B for the domestic, business and commercial environments","of gS fuse for semiconductor protection at NH design usable":"3NE1814-0","Design Of The Thread Of The Screw For Securing The Equipment":"M4","For Auxiliary And Control Contacts With Screw-Type Terminals":"4.5 ... 5.3 lbf·in","Blocking Voltage At The Thyristor For Main Contacts Maximum Permissible":"1 200 V","of back-up R fuse link for semiconductor protection at NH design usable":"3NE8015-1","AWG number as coded connectable conductor cross section for main contacts":"10 ... 14","Rate Of Voltage Rise At The Thyristor For Main Contacts Maximum Permissible":"1 000 V/µs","of full range R fuse link for semiconductor protection at cylindrical design usable":"5SE1325","of back-up R fuse link for semiconductor protection at cylindrical design 10 x 38 mm usable":"3NC1032","of back-up R fuse link for semiconductor protection at cylindrical design 14 x 51 mm usable":"3NC1450","of back-up R fuse link for semiconductor protection at cylindrical design 22 x 58 mm usable":"3NC2263"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$128.30 – $211.14","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/cf75ca959a0d6c8e43918b8a9f736b80.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=415085&mlfb=3RF2320-1AA24"},"ai":{"faq":[{"question":"Where can I buy 3RF2320-1AA24 and get a price?","answer":"This part is sourced and quoted to order through independent distribution. Submit an RFQ to confirm current availability and pricing — no stock count or price figure is published here."},{"question":"What is the depth of 3RF2320-1AA24?","answer":"The depth is 120 mm, with a width of 22.5 mm and height of 95 mm."},{"question":"What compliance documentation does Siemens provide for 3RF2320-1AA24?","answer":"The part is RoHS-compliant with a substance prohibition date of May 28, 2009. It carries pollution degree 3 rating and UL 508 listing. Standard Siemens declarations of conformity and REACH documentation are available through the supply channel."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RF2320-1AA24","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/3RF2320-1AA24 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}}