{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RF2350-1AA04","brand":"Siemens","brandSlug":"siemens","productSlug":"3RF2350-1AA04","canonicalUrl":"https://aoctrl.com/siemens/3RF2350-1AA04","factsUrl":"https://aoctrl.com/api/mcp/products/3RF2350-1AA04","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RF2350-1AA04, single-phase solid-state contactor, 50 A AC-51, 48-460 V AC, zero-point switching, screw terminals, 67 x 100 x 141 mm.","salesMarkdown":"The Siemens 3RF2350-1AA04 is a SIRIUS solid-state contactor, single-phase design, built for zero-point switching of resistive and lightly inductive loads up to 50 A in AC-51 duty class. That AC-51 rating means it's sized for switching resistive heaters, ovens, and similar loads where the current waveform is nearly sinusoidal — not for motor starting or heavy inductive cuts. The 67 mm width means it occupies three or four standard 18 mm module positions — plan your enclosure rail space accordingly. Side-by-side mounting is allowed without derating gaps, which simplifies panel layout for multi-zone heater banks. Power dissipation in the hot operating state is 54 W; that heat must be vented or accounted for in the enclosure thermal budget, especially when several units are ganged together. Derating begins above 40 °C ambient — above that, reduce the load current per the manufacturer's curve to stay within junction temperature limits. Both the main current circuit and the auxiliary/control circuit use screw-type terminals. The main terminals accept solid or stranded wire from 1.5 to 6 mm², or two conductors of 14–10 AWG each. The control terminals accept finer wire: 1x 0.5–2.5 mm² solid or 2x 0.5–1.0 mm². The control supply draws 15 mA at the DC rated value, with a control voltage range of 40–506 V AC (50/60 Hz) or 30 V DC — note that the DC control range is narrow, so confirm your control voltage is within that window before wiring. The zero-point switching function means the contactor turns on only when the AC voltage crosses zero, minimizing inrush and EMI on resistive loads; turn-off also happens at zero current, which eliminates arc stress on the contacts but means the load current must drop below the thyristor holding current (10 mA reverse leakage) to commutate cleanly.","metaTitle":"Siemens 3RF2350-1AA04 SIRIUS Solid-State Contactor, 50 A AC-","metaDescription":"Siemens 3RF2350-1AA04 SIRIUS solid-state contactor, single-phase, 50 A AC-51 rated, 48-460 V AC, zero-point switching, screw terminals, DIN rail mount, active production.","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","Height":"100 mm","at 50 Hz":"40 ... 506 V","at 60 Hz":"40 ... 506 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":"6 600 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","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":"50 A","Design Of The Product":"single-phase","Side-By-Side Mounting":"Yes","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":"54 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":"45 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":"36 A","Surge Current Resistance Rated Value":"1 150 A","Of The Auxiliary And Control Contacts":"M3","at AC in hot operating state per pole":"54 W","reference code according to EN 61346-2":"Q","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","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":"3NE1817-0","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":"3NE1817-0","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":"5SE1363","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":"$280.94","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=48411&mlfb=3RF2350-1AA04","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RF2350-1AA04/alternatives.json"},"ai":{"faq":[{"question":"What is the depth of the 3RF2350-1AA04?","answer":"The depth is 141 mm. Combined with the 67 mm width and 100 mm height, this gives a compact footprint for DIN-rail mounting."},{"question":"What wire sizes does the 3RF2350-1AA04 accept?","answer":"Main circuit terminals accept 1.5–6 mm² solid/stranded or 2x 14–10 AWG. Control circuit terminals accept 1x 0.5–2.5 mm² or 2x 0.5–1.0 mm² solid."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RF2350-1AA04","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/3RF2350-1AA04 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}}