{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RW5515-3HF04","brand":"Siemens","brandSlug":"siemens","productSlug":"3RW5515-3HF04","canonicalUrl":"https://aoctrl.com/siemens/3RW5515-3HF04","factsUrl":"https://aoctrl.com/api/mcp/products/3RW5515-3HF04","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3RW5515-3HF04 soft starter, ATEX/IECEx certified, 200-480 V rated voltage, trip class 10A/10E/20E/30E, PROFIBUS/Modbus/EtherNet/IP, UL/CSA.","salesMarkdown":"## ATEX-certified soft starter for hazardous-area motor control The Siemens 3RW5515-3HF04 is a soft starter with both ATEX and IECEx certification, meaning it's approved for installation in explosive atmospheres where gas or dust hazards are present. This is the headline differentiator — most soft starters in this class lack hazardous-area approvals, so if your line runs in a Zone 1/2 or Zone 21/22 environment, this unit saves you the external isolation barrier. Rated voltage spans 200 to 480 V AC, covering common global industrial supplies from 208 V to 480 V without a tap-change. ## Fieldbus and control integration The 3RW5515-3HF04 carries PROFIBUS, Modbus RTU, Modbus TCP, and EtherNet/IP on the same hardware — no separate communication module needed for these protocols. That's a panel-space saver: one slot, one wiring bundle, and the fieldbus selection is set via parameter, not a physical card swap. Analog output is field-configurable as 4–20 mA (default) or 0–10 V, giving the PLC a real-time motor current or torque signal without an external transducer. The accuracy class is 5 per IEC 61557-12, which is sufficient for process monitoring but not for revenue-grade metering. PROFIenergy support is present when used with PROFINET communication modules — this allows the soft starter to participate in coordinated energy-saving pauses during production breaks, a feature increasingly specified in automotive and battery manufacturing lines. ## Motor control features for demanding starts Beyond basic voltage ramp starting, this unit includes DC braking for rapid stopping of high-inertia loads, pump ramp down to prevent water hammer in pumping stations, torque control for gentle acceleration of conveyors, and a breakaway pulse to crack stuck loads before the ramp begins. These are not gimmicks — they solve real field problems that cause nuisance trips or mechanical wear. Motor heating protection uses a thermal model that tracks the motor's temperature rise during start and run cycles, enabling the soft starter to trip before the motor insulation degrades. The service factor is 1.15, meaning the overload curve allows 15% continuous overcurrent above nameplate — common for pump and fan applications where the motor is sized with margin. The safe state is open load circuit, and the unit has one fail-safe channel (with fail-safe = 1). This means when the safety circuit is triggered, the output contacts open and remove power from the motor — no half-voltage or trickle current. The B10d value is 1,588,000 cycles, which is the number of operations before 10% of a population fails dangerously; for a soft starter this is a high figure, indicating the safety relay path is robust. ## Panel mounting and clearance requirements Dimensions are 170 mm wide, 275 mm high, 152 mm deep — this is a compact footprint for a soft starter in this power class, but it needs specific clearances: 100 mm above, 75 mm below, 10 mm forward, 5 mm at the sides, and 0 mm backward (wall-mountable). The 0 mm rear clearance means it can sit flush against a back panel, saving depth in shallow enclosures. There is no screw terminal — the connection type is spring-clamp or cage-clamp, which means faster wiring but requires a specific screwdriver blade and cannot accept ferruled stranded wire without the ferrule being the correct length. ## Diagnostics and lifecycle management The unit logs events and errors in an internal logbook, and has a trace function that captures the last few seconds of operation before a trip — invaluable for diagnosing intermittent faults on a motor that starts fine cold but trips when hot. Firmware updates are field-loadable, so new features or bug fixes don't require a hardware swap. Auto-reset and remote reset are both supported, allowing the soft starter to restart automatically after a cleared fault — useful for unmanned pumping stations or remote conveyor drives. The reset can be triggered via the fieldbus or a hardwired remote button. Approvals include CE, UL, and CSA — covering European and North American installations. The ATEX and IECEx marks are the key ones for hazardous locations; the UL/CSA listing means it's accepted in US and Canadian panels without additional agency review.","metaTitle":"Siemens 3RW5515-3HF04 Soft Starter, ATEX, 200-480V","metaDescription":"Siemens 3RW5515-3HF04 soft starter with ATEX/IECEx certification, 200-480 V rated voltage, trip class 10A/10E/20E/30E. UL/CSA approved.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Soft Starters"],"specifications":{"ATEX":"Yes","Depth":"152 mm","IECEx":"Yes","Solid":"2x (1.0 ... 2.5 mm²), 2x (2.5 ... 10 mm²)","Width":"170 mm","title":"3RW5515-3HF04","Height":"275 mm","Upwards":"100 mm","Forwards":"10 mm","PROFIBUS":"Yes","Backwards":"0 mm","Downwards":"75 mm","B10d value":"1 588 000","CE marking":"Yes","DC braking":"Yes","Event List":"Yes","Modbus RTU":"Yes","Modbus TCP":"Yes","Safe State":"Open load circuit","Trip Class":"CLASS 10A / 10E (default) / 20E / 30E; 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 and PROFINET High-Feature communication modules","Rated Value":"200 ... 480 V","UL approval":"Yes","description":"SIRIUS soft starter 200-480 V 25 A, 24 V AC/DC spring-type terminals Fail-safe","CSA approval":"Yes","Remote Reset":"Yes","Voltage Ramp":"Yes","Analog Output":"Yes; 4 ... 20 mA (default) / 0 ... 10 V","Error Logbook":"Yes","Motor Heating":"Yes","Accuracy Class":"5 (based on IEC 61557-12)","Pump Ramp Down":"Yes","Screw Terminal":"No","Service Factor":"1.15","Torque Control":"Yes","Trace Function":"Yes","With Fail-Safe":"1","Breakaway Pulse":"Yes","Firmware Update":"Yes","Parameterizable":"4","lifecycle_stage":"current","Combined Braking":"Yes","During Operation":"-25 ... +60 °C; Please observe derating at temperatures of 40 °C or above","Fastening Method":"screw fixing","HMI-High Feature":"Yes","Minimum Load [%]":"10 %; Relative to set Ie","Product Category":"Hybrid switching devices","Shock Resistance":"15 g / 11 ms, from 6 g / 11 ms with potential contact lifting","Start Torque [%]":"10 ... 100 %","Mounting Position":"Vertical (can be rotated +/- 90° and tilted forward or backward +/- 22.5°)","PROFINET standard":"Yes","at DC rated value":"24 V","Product Brand Name":"SIRIUS","Application Wizards":"Yes","Degree Of Pollution":"3, acc. to IEC 60947-4-2","For Control Circuit":"spring-loaded terminals","Product Designation":"Failsafe soft starters","Reversing Operation":"Yes","Stopping Torque [%]":"10 ... 100 %","Alternative Run-Down":"Yes","Condition Monitoring":"Yes","Idle Time Adjustable":"0 ... 255 s","Inside-Delta Circuit":"Yes","Starting Voltage [%]":"20 ... 100 %","Stopping Voltage [%]":"50 %; non-adjustable","Vibration Resistance":"15 mm up to 6 Hz; 2 g up to 500 Hz","at 50 Hz rated value":"24 V","at 60 Hz rated value":"24 V","PROFINET high-feature":"Yes","Ramp-Down (Soft Stop)":"Yes","Torque Limitation [%]":"20 ... 200 %","at 40 °C rated value":"43.3 A","at 50 °C rated value":"39 A","at 60 °C rated value":"33.9 A","Communication Function":"Yes","Digital Output Version":"2 normally-open contacts (NO) / 1 normally-closed contact (NC) / 1 changeover contact (CO)","Slave Pointer Function":"Yes","Spring-Loaded Terminal":"Yes","according to IEC 61508":"SIL1","Ramp-Up (Soft Starting)":"Yes","at 40 °C after startup":"8 W","at 50 °C after startup":"7 W","at 60 °C after startup":"6 W","EMC emitted interference":"acc. to IEC 60947-4-2: Class A","Emergency Operation Mode":"Yes","For Main Current Circuit":"screw-type terminals","Number Of Analog Outputs":"1","Number Of Digital Inputs":"4","Number Of Parameter Sets":"3","Weight Without Packaging":"2.3 kg","at 40 °C during startup":"364 W","at 50 °C during startup":"309 W","at 60 °C during startup":"262 W","Breakaway Time Adjustable":"0 ... 2 s","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) / When using the motor overload protection according to ATEX, an upstream contactor is required in inside-delta circuit.","Number Of Digital Outputs":"3","Via Software Configurable":"Yes","Automatic Parameterisation":"Yes","Impulse Voltage Rated Value":"6 kV","Intrinsic Device Protection":"Yes","Number Of Controlled Phases":"3","Safe failure fraction (SFF)":"60 %","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":"Yes","at DC-13 at 24 V rated value":"1 A","Adjustable Current Limitation":"Yes","Electromagnetic Compatibility":"acc. to IEC 60947-4-2","Substance Prohibitance (Date)":"11/22/2019","at 40 °C rated value minimum":"5 A","at AC-15 at 250 V rated value":"3 A","is supported HMI-High Feature":"Yes","Insulation Voltage Rated Value":"480 V","Ramp-Down Time Of Soft Starter":"0 ... 360 s","at 230 V at 40 °C rated value":"5.5 kW","at 400 V at 40 °C rated value":"11 kW","Breakaway Voltage [%] Adjustable":"40 ... 100 %","Control Supply Voltage Frequency":"50 ... 60 Hz","Operating Measured Value Display":"Yes","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":"3NA3822-6; Type of coordination 1, Iq = 65 kA","Between Main And Auxiliary Circuit":"480 V; does not apply for thermistor connection","Start-Up Ramp Time Of Soft Starter":"0 ... 360 s","at 200/208 V at 50 °C rated value":"5 hp","at 220/230 V at 50 °C rated value":"7.5 hp","at 460/480 V at 50 °C rated value":"15 hp","of circuit breaker usable at 400 V":"3RV2032-4EA10; Type of coordination 1, Iq = 65 kA, CLASS 10","of circuit breaker usable at 500 V":"3RV2032-4EA10; Type of coordination 1, Iq = 15 kA, CLASS 10","At Inside-Delta Circuit Rated Value":"200 ... 480 V","Programmable Control Inputs/Outputs":"Yes","at the digital inputs at DC maximum":"1 000 m","of communication module Ethernet/IP":"3RW5980-0CE00","Current Unbalance Limiting Value [%]":"10 ... 60 %","Design Of The Overvoltage Protection":"Varistor","Surge Voltage Resistance Rated Value":"6 kV","category according to EN ISO 13849-1":"2","Current Limiting Value [%] Adjustable":"125 ... 800 %","during storage according to IEC 60721":"1K6 (only occasional condensation), 1C2 (no salt mist), 1S2 (sand must not get inside the devices), 1M4","stop category according to EN 60204-1":"0","Between Soft Starter And Motor Maximum":"800 m","Removable Terminal For Control Circuit":"Yes","according to ATEX directive 2014/34/EU":"BVS 18 ATEX F 003 X","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","Finely Stranded With Core End Processing":"2x (1.0 ... 2.5 mm²), 2x (2.5 ... 6.0 mm²)","Number of digital outputs with fail-safe":"1","Blocking Voltage Of The Thyristor Maximum":"1 600 V","Evaluation Of Thermistor Motor Protection":"Yes; Type A PTC or Klixon / Thermoclick","Number Of Digital Outputs Parameterizable":"2","average diagnostic coverage level (DCavg)":"90 %","of communication module Modbus RTU usable":"3RW5980-0CR00","of communication module Modbus TCP usable":"3RW5980-0CT00","Creep Speed In Both Directions Of Rotation":"Yes","Ground-Fault Monitoring Limiting Value [%]":"10 ... 95 %","Soft Starting At Heavy Starting Conditions":"Yes","For Main Contacts With Screw-Type Terminals":"18 ... 22 lbf·in","safety device type according to IEC 61508-2":"Type B","Recovery Time After Overload Trip Adjustable":"60 ... 1 800 s","at AWG cables for main current circuit solid":"2x (16 ... 12), 2x (14 ... 8)","Number Of Digital Outputs Not Parameterizable":"1","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":"820 mA","hardware fault tolerance according to IEC 61508":"0","utilization category according to IEC 60947-4-2":"AC 53a","PFHD with high demand rate according to EN 62061":"1E-6 1/h","Product Feature Integrated Bypass Contact System":"Yes","of communication module PROFINET standard usable":"3RW5980-0CS00","SIL Claim Limit (subsystem) according to EN 62061":"SIL 1","Control Supply Current In Standby Mode Rated Value":"420 mA","PFDavg with low demand rate according to IEC 61508":"0.09","performance level (PL) according to EN ISO 13849-1":"c","Relative Negative Tolerance Of The Operating Voltage":"-15 %","Relative Positive Tolerance Of The Operating Voltage":"10 %","contact rating of auxiliary contacts according to UL":"R300-B300","of communication module PROFINET high-feature usable":"3RW5950-0CH00","Inrush Current By Closing The Bypass Contacts Maximum":"0.91 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":"2 000 m; Derating as of 1000 m, see catalog","of the gG fuse usable at inside-delta circuit up to 500 V":"3NA3822-6; Type of coordination 1, Iq = 65 kA","of circuit breaker usable at 400 V at inside-delta circuit":"3RV2032-4VA10; Type of coordination 1, Iq = 65 kA, CLASS 10","of circuit breaker usable at 500 V at inside-delta circuit":"3RV2032-4VA10; Type of coordination 1, Iq = 15 kA, CLASS 10","Diagnostics Test Interval By Internal Test Function Maximum":"1 000 s","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 %","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":"7.5 A","of back-up R fuse link for semiconductor protection usable up to 690 V":"3NE8021-1; Type of coordination 2, Iq = 65 kA","Duration Of Inrush Current Peak At Application Of Control Supply Voltage":"20 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 %","of full range R fuse link for semiconductor protection usable up to 690 V":"3NE1817-0; Type of coordination 2, Iq = 65 kA","at AWG cables for control circuit finely stranded with core end processing":"2x (24 ... 16)","Relative Negative Tolerance Of The Operating Voltage At Inside-Delta Circuit":"-15 %","Relative Positive Tolerance Of The Operating Voltage At Inside-Delta Circuit":"10 %","OFF-delay time with safety-related request when switched off via control inputs maximum":"100 ms"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/408330d9f2e27d408ff50fa01e82e657.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=830972&mlfb=3RW5515-3HF04"},"ai":{"faq":[{"question":"What ATEX certification does the 3RW5515-3HF04 carry?","answer":"The soft starter is ATEX certified (Yes) and also carries IECEx certification. This means it is approved for use in explosive atmospheres per the ATEX directive 2014/34/EU and the IECEx scheme, covering both gas and dust hazardous zones."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RW5515-3HF04","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/3RW5515-3HF04 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:47:38.189Z","lastPublished":"2026-07-22T19:47:38.189Z","indexable":true}}