{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RF2340-1AA04","brand":"Siemens","brandSlug":"siemens","productSlug":"3RF2340-1AA04","canonicalUrl":"https://aoctrl.com/siemens/3RF2340-1AA04","factsUrl":"https://aoctrl.com/api/mcp/products/3RF2340-1AA04","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS solid-state contactor, single-phase, 3RF2340-1AA04, 40 A AC-51, 48-460 VAC, zero-point switching, screw terminals.","salesMarkdown":"The Siemens 3RF2340-1AA04 is a SIRIUS solid-state contactor — a single-phase, zero-point switching device rated for resistive and lightly inductive loads. The 40 A AC-51 rating covers resistive heater banks, ovens, and lighting circuits where inrush is minimal. For UL 508 installations, it carries a 36 A rating, so a panel built to NEC rules uses that lower figure for branch-circuit protection sizing. Zero-point switching means the thyristor turns on at the voltage zero-crossing, which minimizes radiated EMI and mechanical shock on the load. Off-state leakage is 10 mA reverse current per thyristor — fine for most loads but worth noting if the downstream circuit expects a hard open. The 67 mm width and 100 mm height mean it occupies roughly the same footprint as a 3-pole contactor — plan for that slot in the enclosure layout. Side-by-side mounting is allowed, so no mandatory spacing gap between units, but the 44 W heat dissipation at rated AC load needs to be vented or derated if packed tight. Screw terminals for both main and control circuits. The main circuit accepts 1.5–6 mm² solid/stranded or 2x 14–10 AWG. The 7 mm contact gap on the main contacts is the physical air gap — not a functional spec for the solid-state switching, but relevant for isolation verification during lockout. RoHS compliance date is 2006-07-01, which covers the EU RoHS exemption structure. The insulation voltage is rated 600 V, and the operating frequency range is 50/60 Hz. For a spare-parts kit or a replacement in an older panel, confirm the supply voltage falls within 48–460 VAC and the control voltage within 40–506 VAC.","metaTitle":"Siemens 3RF2340-1AA04 SIRIUS Solid-State Contactor, 40 A AC-","metaDescription":"Siemens 3RF2340-1AA04 SIRIUS solid-state contactor, 40 A AC-51, 48-460 VAC, zero-point switching, UL 508 rated 36 A. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Solid State Relays"],"specifications":{"Depth":"141 mm","Solid":"1x (0.5 ... 2.5 mm²), 2x (0.5 ... 1.0 mm²)","Width":"67 mm","at DC":"13 mA","title":"3RF2340-1AA04","Height":"100 mm","at 50 Hz":"40 ... 506 V","at 60 Hz":"40 ... 506 V","description":"Solid-state contactor 1-phase 3RF2 AC 51 / 40 A / 40 °C 48-460 V / 24 V DC screw terminal","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":"7 200 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":"3NA6812 ; These fuses have a smaller rated current than the semiconductor relays","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":"40 A","Design Of The Product":"single-phase","Side-By-Side Mounting":"Yes","of DIAZED fuse usable":"5SB4111 ; These fuses have a smaller rated current than the semiconductor relays","of NEOZED fuse usable":"5SE2335 ; These fuses have a smaller rated current than the semiconductor relays","For Main Current Circuit":"screw-type terminals","Operational Current Minimum":"500 mA","at AC in hot operating state":"44 W","Substance Prohibitance (Date)":"07/01/2006","Insulation Voltage Rated Value":"600 V","Operating Frequency Rated Value":"50 ... 60 Hz","according to UL 508 rated value":"36 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":"33 A","Surge Current Resistance Rated Value":"1 200 A","Of The Auxiliary And Control Contacts":"M3","at AC in hot operating state per pole":"44 W","At Cylindrical Design 14 X 51 Mm Usable":"3NW6112-1 ; These fuses have a smaller rated current than the semiconductor relays","At Cylindrical Design 22 X 58 Mm Usable":"3NW6212-1 ; 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","3 Of The Accessories That Can Be Ordered":"converter","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 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":"3NE1802-0","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":"3NE8017-1","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":"5SE1350","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":"3NC2280"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$239.78","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/873a330437efff15e562b28718329fd6.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=239057&mlfb=3RF2340-1AA04"},"ai":{"faq":[{"question":"What are the key electrical ratings for this solid-state contactor?","answer":"AC-51 rated current is 40 A, UL 508 rated current is 36 A. The minimum operational current is 500 mA. Supply voltage range is 48–460 VAC at 50/60 Hz, and control voltage range is 40–506 VAC."},{"question":"What compliance documentation does Siemens provide for this part?","answer":"RoHS compliance date is 2006-07-01. The insulation voltage is rated 600 V, and pollution degree is 3. The product carries a SIRIUS brand designation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RF2340-1AA04","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/3RF2340-1AA04 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}}