{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RW5074-2TB04","brand":"Siemens","brandSlug":"siemens","productSlug":"3RW5074-2TB04","canonicalUrl":"https://aoctrl.com/siemens/3RW5074-2TB04","factsUrl":"https://aoctrl.com/api/mcp/products/3RW5074-2TB04","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RW5 series soft starter, order code 3RW5074-2TB04, 135 A minimum rated current, 200-480 V supply voltage, ATEX and UKEX certified.","salesMarkdown":"## What this soft starter delivers The Siemens 3RW5074-2TB04 is a SIRIUS 3RW5 soft starter rated for a minimum setting current of 135 A across a supply voltage range of 200 to 480 V. It is configured for Trip Class 10A, 10E (preset), or 20E per IEC 60947-4-2, which governs how quickly it disconnects under overload — 10A is the tightest for fast-starting loads like conveyors, while 20E gives more headroom for high-inertia starts like fans or centrifuges. This unit carries ATEX, UKEX, and IECEx approvals, meaning it is certified for use in potentially explosive atmospheres — a requirement for chemical, oil-and-gas, or grain-handling installations where a standard soft starter would not be permitted. Fieldbus integration is comprehensive: PROFIBUS, PROFINET standard, Modbus RTU, Modbus TCP, and EtherNet/IP are all supported, so it drops into most automation architectures without a gateway. PROFIenergy is available when used with a PROFINET communication module, allowing energy management during idle phases. The 3RW5074-2TB04 measures 160 mm wide, 230 mm high, and 282 mm deep, and mounts via screw fixing on a vertical surface. The mounting surface can be rotated ±90° or tilted ±22.5° forward/backward, giving panel builders flexibility in tight enclosures. Clearance requirements: 100 mm upward, 75 mm downward, 10 mm forward, 5 mm sideways, and zero backward — plan the gland plate and ventilation accordingly. Shock resistance is 15 g / 11 ms, with potential contact lifting above 12 g / 11 ms, so it holds up on vibrating machinery like compressors or crushers.","metaTitle":"Siemens 3RW5074-2TB04 Soft Starter, 135 A, 200-480 V, ATEX","metaDescription":"Siemens 3RW5074-2TB04 soft starter rated 135 A min, 200-480 V. ATEX/UKEX/IECEx certified, Trip Class 10A/10E/20E. Active production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Soft Starters"],"specifications":{"ATEX":"Yes","UKEX":"Yes","Depth":"282 mm","IECEx":"Yes","Width":"160 mm","title":"3RW5074-2TB04","Height":"230 mm","Minimum":"135 A","Upwards":"100 mm","Forwards":"10 mm","PROFIBUS":"Yes","Backwards":"0 mm","Downwards":"75 mm","CE marking":"Yes","Modbus RTU":"Yes","Modbus TCP":"Yes","Trip Class":"CLASS 10A / 10E (preset) / 20E; acc. to IEC 60947-4-2","auto-RESET":"Yes","At The Side":"5 mm","EtherNet/IP":"Yes","PROFIenergy":"Yes; in connection with the PROFINET Standard communication module","Rated Value":"200 ... 480 V","Soft Torque":"Yes","UL approval":"Yes","description":"SIRIUS soft starter 200-480 V 315 A, 24 V AC/DC Spring-loaded terminals Thermistor input","CSA approval":"Yes","Remote Reset":"Yes; By turning off the control supply voltage","Voltage Ramp":"Yes","Analog Output":"No","Error Logbook":"Yes; Only in conjunction with special accessories","Pump Ramp Down":"Yes","Service Factor":"1","Torque Control":"No","lifecycle_stage":"current","During Operation":"-25 ... +60 °C; Please observe derating at temperatures of 40 °C or above","Fastening Method":"screw fixing","HMI-High Feature":"No","Minimum Load [%]":"15 %; Relative to smallest settable Ie","Product Category":"Hybrid switching devices","Shock Resistance":"15 g / 11 ms, from 12 g / 11 ms with potential contact lifting","Mounting Position":"with vertical mounting surface +/-90° rotatable, with vertical mounting surface +/- 22.5° tiltable to the front and back","PROFINET standard":"Yes","at DC rated value":"24 V","Product Brand Name":"SIRIUS","Degree Of Pollution":"3, acc. to IEC 60947-4-2","For Control Circuit":"spring-loaded terminals","Not Parameterizable":"2","Product Designation":"Soft starter","Starting Voltage [%]":"30 ... 100 %","Stopping Voltage [%]":"50 %; non-adjustable","Vibration Resistance":"15 mm to 6 Hz; 2g to 500 Hz","at 50 Hz rated value":"24 V","at 60 Hz rated value":"24 V","Ramp-Down (Soft Stop)":"Yes","at 40 °C rated value":"315 A","at 50 °C rated value":"279 A","at 60 °C rated value":"255 A","Communication Function":"Yes","Digital Output Version":"2 normally-open contacts (NO) / 1 changeover contact (CO)","Ramp-Up (Soft Starting)":"Yes","at 40 °C after startup":"36 W","at 50 °C after startup":"29 W","at 60 °C after startup":"24 W","EMC emitted interference":"acc. to IEC 60947-4-2: Class A","For Main Current Circuit":"busbar connection","Number Of Analog Outputs":"0","Number Of Digital Inputs":"1","Weight Without Packaging":"7.3 kg","at 40 °C during startup":"3 368 W","at 50 °C during startup":"2 805 W","at 60 °C during startup":"2 455 W","For Control Circuit Solid":"2x (0.25 ... 1.5 mm²)","Motor Overload Protection":"Yes; Full motor protection (thermistor motor protection and electronic motor overload protection)","Number Of Digital Outputs":"3","Via Software Configurable":"Yes","is supported HMI-Standard":"Yes","Impulse Voltage Rated Value":"6 kV","Intrinsic Device Protection":"Yes","Number Of Controlled Phases":"2","During Storage And Transport":"-40 ... +80 °C","Type Of The Motor Protection":"Electronic, tripping in the event of thermal overload of the motor","Via Software Parameterizable":"No","at DC-13 at 24 V rated value":"1 A","Adjustable Current Limitation":"Yes","Substance Prohibitance (Date)":"09/23/2019","at AC-15 at 250 V rated value":"3 A","is supported HMI-High Feature":"Yes","of standard HMI module usable":"3RW5980-0HS01","Insulation Voltage Rated Value":"600 V","Ramp-Down Time Of Soft Starter":"0 ... 20 s","at 230 V at 40 °C rated value":"90 kW","at 400 V at 40 °C rated value":"160 kW","Width Of Connection Bar Maximum":"35 mm; with connection cover 3RT1966-4EA1 maximum length 45 mm","Control Supply Voltage Frequency":"50 ... 60 Hz","Operating Measured Value Display":"Yes; Only in conjunction with special accessories","Operating frequency 1 rated value":"50 Hz","Operating frequency 2 rated value":"60 Hz","of high feature HMI module usable":"3RW5980-0HF00","of the gG fuse usable up to 690 V":"2x3NA3365-6; Type of coordination 1, Iq = 65 kA","Between Main And Auxiliary Circuit":"600 V","Start-Up Ramp Time Of Soft Starter":"0 ... 20 s","at 200/208 V at 50 °C rated value":"75 hp","at 220/230 V at 50 °C rated value":"100 hp","at 460/480 V at 50 °C rated value":"200 hp","of circuit breaker usable at 400 V":"3VA2440-7MN32-0AA0 ; Type of assignment 1, Iq = 65 kA","of circuit breaker usable at 500 V":"3VA2440-7MN32-0AA0 ; Type of assignment 1, Iq = 65 kA","at the digital inputs at AC maximum":"1 000 m","of communication module Ethernet/IP":"3RW5980-0CE00","Design Of The Overvoltage Protection":"Varistor","Surge Voltage Resistance Rated Value":"6 kV","of line contactor usable up to 480 V":"3RT1075","of line contactor usable up to 690 V":"3RT1075","Current Limiting Value [%] Adjustable":"130 ... 700 %","during storage according to IEC 60721":"1K6 (only occasional condensation), 1C2 (no salt mist), 1S2 (sand must not get inside the devices), 1M4","Between Soft Starter And Motor Maximum":"800 m","at AWG cables for control circuit solid":"2x (24 ... 16)","during operation according to IEC 60721":"3K6 (no ice formation, only occasional condensation), 3C3 (no salt mist), 3S2 (sand must not get into the devices), 3M6","during transport according to IEC 60721":"2K2, 2C1, 2S1, 2M2 (max. fall height 0.3 m)","of communication module PROFIBUS usable":"3RW5980-0CP00","reference code according to IEC 81346-2":"Q","accuracy class according to IEC 61557-12":"5 %","Blocking Voltage Of The Thyristor Maximum":"1 600 V","Evaluation Of Thermistor Motor Protection":"Yes; Type A PTC or Klixon / Thermoclick","of communication module Modbus RTU usable":"3RW5980-0CR00","of communication module Modbus TCP usable":"3RW5980-0CT00","For Main Contacts With Screw-Type Terminals":"124 ... 210 lbf·in","At Rotary Coding Switch On Switch Position 1":"135 A","At Rotary Coding Switch On Switch Position 2":"147 A","At Rotary Coding Switch On Switch Position 3":"159 A","At Rotary Coding Switch On Switch Position 4":"171 A","At Rotary Coding Switch On Switch Position 5":"183 A","At Rotary Coding Switch On Switch Position 6":"195 A","At Rotary Coding Switch On Switch Position 7":"207 A","At Rotary Coding Switch On Switch Position 8":"219 A","At Rotary Coding Switch On Switch Position 9":"231 A","at AWG cables for main current circuit solid":"2/0 ... 500 kcmil","for DIN cable lug for main contacts stranded":"50 ... 240 mm²","At Rotary Coding Switch On Switch Position 10":"243 A","At Rotary Coding Switch On Switch Position 11":"255 A","At Rotary Coding Switch On Switch Position 12":"267 A","At Rotary Coding Switch On Switch Position 13":"279 A","At Rotary Coding Switch On Switch Position 14":"291 A","At Rotary Coding Switch On Switch Position 15":"303 A","At Rotary Coding Switch On Switch Position 16":"315 A","Type Of Voltage Of The Control Supply Voltage":"AC/DC","With Conductor Cross-Section = 0.5 Mm2 Maximum":"50 m","With Conductor Cross-Section = 1.5 Mm2 Maximum":"150 m","With Conductor Cross-Section = 2.5 Mm2 Maximum":"250 m","Holding Current In Bypass Operation Rated Value":"490 mA","utilization category according to IEC 60947-4-2":"AC-53a","Product Feature Integrated Bypass Contact System":"Yes","of communication module PROFINET standard usable":"3RW5980-0CS00","Control Supply Current In Standby Mode Rated Value":"160 mA","for DIN cable lug for main contacts finely stranded":"70 ... 240 mm²","Relative Negative Tolerance Of The Operating Voltage":"-15 %","Relative Positive Tolerance Of The Operating Voltage":"10 %","Inrush Current By Closing The Bypass Contacts Maximum":"7.6 A","Design Of Short-Circuit Protection For Control Circuit":"4 A gG fuse (Icu=1 kA), 6 A quick-acting fuse (Icu=1 kA), C1 miniature circuit breaker (Icu= 600 A), C6 miniature circuit breaker (Icu= 300 A); Is not part of scope of supply","Relative Negative Tolerance Of The Operating Frequency":"-10 %","Relative Positive Tolerance Of The Operating Frequency":"10 %","Installation Altitude At Height Above Sea Level Maximum":"5 000 m; derating as of 1000 m, see Manual","For Auxiliary And Control Contacts With Screw-Type Terminals":"7 ... 10.3 lbf·in","For Control Circuit Finely Stranded With Core End Processing":"2x (0.25 ... 1.5 mm²)","relative negative tolerance of the control supply voltage at DC":"-20 %","relative positive tolerance of the control supply voltage at DC":"20 %","For Main Contacts For Box Terminal Using Both Clamping Points Solid":"min. 2x 70 mm², max. 2x 240 mm²","Relative Negative Tolerance Of The Control Supply Voltage Frequency":"-10 %","Relative Positive Tolerance Of The Control Supply Voltage Frequency":"10 %","Inrush Current Peak At Application Of Control Supply Voltage Maximum":"3.3 A","For Main Contacts For Box Terminal Using Both Clamping Points Stranded":"min. 2x 70 mm², max. 2x 240 mm²","For Main Contacts For Box Terminal Using The Back Clamping Point Solid":"120 ... 240 mm²","of back-up R fuse link for semiconductor protection usable up to 690 V":"3NE3 335 ; Type of coordination 2, Iq = 65 kA","For Main Contacts For Box Terminal Using The Front Clamping Point Solid":"95 ... 300 mm²","Duration Of Inrush Current Peak At Application Of Control Supply Voltage":"12.1 ms","relative negative tolerance of the control supply voltage at AC at 50 Hz":"-20 %","relative negative tolerance of the control supply voltage at AC at 60 Hz":"-20 %","relative positive tolerance of the control supply voltage at AC at 50 Hz":"20 %","relative positive tolerance of the control supply voltage at AC at 60 Hz":"20 %","For Main Contacts For Box Terminal Using The Back Clamping Point Stranded":"120 ... 240 mm²","of full range R fuse link for semiconductor protection usable up to 690 V":"3NE1 333-2 ; Type of coordination 2, Iq = 65 kA","For Main Contacts For Box Terminal Using The Front Clamping Point Stranded":"95 ... 300 mm²","at AWG cables for control circuit finely stranded with core end processing":"2x (24 ... 16)","at AWG cables for main contacts for box terminal using the back clamping point":"250 ... 500 kcmil","at AWG cables for main contacts for box terminal using the front clamping point":"3/0 ... 600 kcmil","For Main Contacts For Box Terminal Using Both Clamping Points Finely Stranded With Core End Processing":"min. 2x 50 mm², max. 2x 185 mm²","For Main Contacts For Box Terminal Using Both Clamping Points Finely Stranded Without Core End Processing":"min. 2x 50 mm², max. 2x 185 mm²","For Main Contacts For Box Terminal Using The Back Clamping Point Finely Stranded With Core End Processing":"120 ... 185 mm²","For Main Contacts For Box Terminal Using The Front Clamping Point Finely Stranded With Core End Processing":"70 ... 240 mm²","For Main Contacts For Box Terminal Using The Back Clamping Point Finely Stranded Without Core End Processing":"120 ... 185 mm²","For Main Contacts For Box Terminal Using The Front Clamping Point Finely Stranded Without Core End Processing":"70 ... 240 mm²"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/04ac0d2181656de36510901f5b1372ce.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=830762&mlfb=3RW5074-2TB04"},"ai":{"faq":[{"question":"Can the 3RW5074-2TB04 be used with 480V 3-phase motors?","answer":"Yes, the rated supply voltage range is 200 to 480 V, covering 480 V three-phase systems directly."},{"question":"What fieldbus protocols does the 3RW5074-2TB04 support?","answer":"It supports PROFIBUS, PROFINET standard, Modbus RTU, Modbus TCP, and EtherNet/IP, plus PROFIenergy with a PROFINET communication module."},{"question":"What are the ATEX and UKEX approvals on this soft starter?","answer":"The 3RW5074-2TB04 carries ATEX, UKEX, and IECEx certification, making it suitable for use in explosive atmospheres."},{"question":"Where can I buy the Siemens 3RW5074-2TB04 soft starter?","answer":"This part is sourced and quoted to order. Availability and pricing are confirmed at the time of your RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RW5074-2TB04","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/3RW5074-2TB04 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}}