{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RF2320-1AA02","brand":"Siemens","brandSlug":"siemens","productSlug":"3RF2320-1AA02","canonicalUrl":"https://aoctrl.com/siemens/3RF2320-1AA02","factsUrl":"https://aoctrl.com/api/mcp/products/3RF2320-1AA02","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS solid-state contactor, single-phase, 20 A AC-51, 22.5 mm width, zero-point switching, screw terminals.","salesMarkdown":"The Siemens 3RF2320-1AA02 is a SIRIUS-brand solid-state contactor, single-phase design, built for zero-point switching of resistive loads. AC-51 rated at 20 A, it handles heating elements, lighting banks, and other non-inductive circuits up to that current. The 22.5 mm width fits standard DIN-rail enclosures; snap-on mounting per IEC 60715 lets it clip alongside other SIRIUS components without extra brackets. AC-51 is the resistive-load category per IEC 60947-4-3 — the contactor is not rated for motor starting (AC-53) or mixed loads. UL 508 rating is 17.6 A, slightly lower due to UL's different test criteria. The minimum operational current is 500 mA, so it won't reliably switch very small signal loads. I²t maximum of 1,800 A²·s is the let-through energy for fuse coordination — pair with the listed DIAZED (5SB2711) or NEOZED (5SE2320) fuses for short-circuit protection. Control voltage range is 24–230 V AC at 50/60 Hz, or 20–253 V AC across the frequency band. Zero-point switching means the output turns on only near the AC voltage zero crossing — reduces inrush and RFI, but adds a 1 ms ON-delay (plus up to one half-wave). Same delay on turn-off. ## Panel integration Width is 22.5 mm, depth 120 mm, height 95 mm — a compact footprint for a 20 A SSR. Screw-type terminals on both main and control circuits; solid wire 1x (0.5–2.5 mm²) or 2x (0.5–1.0 mm²), stranded 1.5–6 mm². AWG 14–10 for main contacts. Side-by-side mounting is allowed with no derating at 40 °C; above that, follow the derating curve.","metaTitle":"Siemens 3RF2320-1AA02 SIRIUS Solid-State Contactor, 20 A AC-","metaDescription":"Siemens SIRIUS 3RF2320-1AA02 solid-state contactor, 20 A AC-51, 22.5 mm wide, zero-point switching. UL 508 rated 17.6 A. Sourced to order. Request a quote.","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 DC":"13 mA","Height":"95 mm","at 50 Hz":"20 ... 253 V","at 60 Hz":"20 ... 253 V","ON-delay time":"1 ms; additionally max. one half-wave","During Storage":"-55 ... +80 °C","OFF-delay time":"1 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","at DC rated value":"30 V","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":"24 ... 230 V","at 60 Hz rated value":"24 ... 230 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","at AWG cables for main contacts":"2x (14 ... 10)","Reverse Current Of The Thyristor":"10 mA","For Auxiliary And Control Circuit":"screw-type terminals","control current at DC rated value":"15 mA","For Auxiliary And Control Contacts":"7 mm","Without Load Current Share Typical":"0.4 W","at AC-51 according to IEC 60947-4-3":"13.2 A","Surge Current Resistance Rated Value":"600 A","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":"3NW6007-1","At Cylindrical Design 14 X 51 Mm Usable":"3NW6107-1","At Cylindrical Design 22 X 58 Mm Usable":"3NW6207-1; 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","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","1 Of The Accessories That Can Be Ordered":"terminal cover","3 Of The Accessories That Can Be Ordered":"converter","4 Of The Accessories That Can Be Ordered":"load monitoring","5 Of The Accessories That Can Be Ordered":"load monitoring, basis","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 DC initial value for signal <1> detection":"15 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":"DC","vibration resistance according to IEC 60068-2-6":"2g","at AWG cables for auxiliary and control contacts":"1x (AWG 20 ... 12)","at DC full-scale value for signal<0> recognition":"5 V","electrostatic discharge according to IEC 61000-4-2":"4 kV contact discharging / 8 kV air discharging, behavior criterion 2","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":"800 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":"$191.26","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=412560&mlfb=3RF2320-1AA02","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RF2320-1AA02/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RF2320-1AA02 and how do I get a price?","answer":"This part is sourced to order through independent distribution. Submit an RFQ to receive a current price and availability confirmation."},{"question":"What is the AC-51 current rating of 3RF2320-1AA02?","answer":"The AC-51 rated operational current is 20 A. Under UL 508, the rating is 17.6 A."},{"question":"What compliance documentation does Siemens provide for 3RF2320-1AA02?","answer":"The part has a RoHS substance prohibition date of May 28, 2009, indicating RoHS compliance. Insulation voltage is rated 600 V, and clearance for main contacts is 7 mm."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RF2320-1AA02","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/3RF2320-1AA02 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}