{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RW5556-6HA14","brand":"Siemens","brandSlug":"siemens","productSlug":"3RW5556-6HA14","canonicalUrl":"https://aoctrl.com/siemens/3RW5556-6HA14","factsUrl":"https://aoctrl.com/api/mcp/products/3RW5556-6HA14","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3RW5556-6HA14 soft starter, 200–480 V rated, ATEX and IECEx certified, trip class 10A–30E, screw terminal, Modbus RTU/TCP and EtherNet/IP, active production.","salesMarkdown":"The 3RW5556-6HA14: The default trip class is CLASS 10A / 10E per IEC 60947-4-2, which limits the start duration to 10 seconds at six times rated current — enough for most centrifugal pumps and fans. For high-inertia loads like conveyors or crushers, the unit can be set to CLASS 20E or 30E, extending the start window without nuisance tripping. The voltage ramp, torque control, and breakaway pulse let the soft starter manage the motor's acceleration profile: the ramp reduces inrush current, the torque control limits mechanical shock, and the breakaway pulse gives a short high-torque burst to break a stuck load free before the ramp takes over. DC braking is built in — no external braking resistor needed for quick stops on conveyors or centrifuges where coast-down time is a safety or cycle-time issue. ## Fieldbus and control — three network options on one unit The soft starter supports Modbus RTU, Modbus TCP, and EtherNet/IP natively, so it connects to most PLC ecosystems (Siemens S7, Rockwell ControlLogix, Schneider M340) without an external gateway. PROFIBUS is also listed as present, covering legacy fieldbus installs. The analog output can be configured as 4–20 mA (default) or 0–10 V, feeding motor current or load status to a remote SCADA or local panel meter. The event list and error logbook store the last several faults with timestamps — useful for diagnosing nuisance trips without a laptop. Firmware updates are field-loadable, so the unit can be brought to the latest revision without swapping hardware. ## ATEX and IECEx — certified for explosive atmospheres The 3RW5556-6HA14 carries ATEX and IECEx certification, meaning it is approved for installation in Zone 1 or Zone 2 gas atmospheres and Zone 21 or Zone 22 dust atmospheres when paired with the appropriate motor and cabling. This is a differentiator — most soft starters in this power class lack the ATEX mark, so if the line runs in a hazardous area, this part is the one that passes the safety audit. ## Panel fit — dimensions and clearances The enclosure measures 764 mm high by 478 mm wide by 241 mm deep. Minimum clearances around the unit are: 100 mm above, 75 mm below, 10 mm in front, 5 mm at the sides, and 0 mm behind. That 0 mm rear clearance means it can sit flush against the back panel — useful when gland-plate space is tight. Screw terminals are standard — no special crimp tool or busbar kit required for the power connections.","metaTitle":"Siemens 3RW5556-6HA14 Soft Starter, 200–480 V, ATEX, Active","metaDescription":"Siemens 3RW5556-6HA14 soft starter, 200–480 V rated, ATEX and IECEx certified, trip class 10A–30E. Active production, quoted to order. UL/CSA approved.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Soft Starters"],"specifications":{"ATEX":"Yes","Depth":"241 mm","IECEx":"Yes","Width":"478 mm","title":"3RW5556-6HA14","Height":"764 mm","Upwards":"100 mm","Forwards":"10 mm","PROFIBUS":"Yes","at 50 Hz":"110 ... 250 V","at 60 Hz":"110 ... 250 V","Backwards":"0 mm","Downwards":"75 mm","CE marking":"Yes","DC braking":"Yes","Event List":"Yes","Modbus RTU":"Yes","Modbus TCP":"Yes","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 1100 A, 110-250 V AC Screw terminals","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":"Yes","Service Factor":"1.15","Torque Control":"Yes","Trace Function":"Yes","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","Product Brand Name":"SIRIUS","Application Wizards":"Yes","Degree Of Pollution":"3, acc. to IEC 60947-4-2","For Control Circuit":"screw-type terminals","Product Designation":"Soft starter","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","PROFINET high-feature":"Yes","Ramp-Down (Soft Stop)":"Yes","Torque Limitation [%]":"20 ... 200 %","at 40 °C rated value":"1 905 A","at 50 °C rated value":"1 695 A","at 60 °C rated value":"1 541 A","Communication Function":"Yes","Digital Output Version":"3 normally-open contacts (NO) / 1 changeover contact (CO)","Slave Pointer Function":"Yes","Spring-Loaded Terminal":"No","Ramp-Up (Soft Starting)":"Yes","at 40 °C after startup":"330 W","at 50 °C after startup":"270 W","at 60 °C after startup":"223 W","EMC emitted interference":"acc. to IEC 60947-4-2: Class A","Emergency Operation Mode":"Yes","For Main Current Circuit":"busbar connection","Number Of Analog Outputs":"1","Number Of Digital Inputs":"4","Number Of Parameter Sets":"3","Weight Without Packaging":"61 kg","at 40 °C during startup":"18 502 W","at 50 °C during startup":"15 568 W","at 60 °C during startup":"13 552 W","Breakaway Time Adjustable":"0 ... 2 s","For Control Circuit Solid":"1x (0.5 ... 4.0 mm²), 2x (0.5 ... 2.5 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":"4","Via Software Configurable":"Yes","Automatic Parameterisation":"Yes","Impulse Voltage Rated Value":"6 kV","Intrinsic Device Protection":"Yes","Number Of Controlled Phases":"3","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)":"02/11/2019","at 40 °C rated value minimum":"220 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":"315 kW","at 400 V at 40 °C rated value":"560 kW","Width Of Connection Bar Maximum":"55 mm","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":"3x3NA3365-6; 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":"350 hp","at 220/230 V at 50 °C rated value":"400 hp","at 460/480 V at 50 °C rated value":"850 hp","of circuit breaker usable at 400 V":"3VA2716-7AB05-0AA0; Type of coordination 1, Iq = 65 kA, CLASS 10","of circuit breaker usable at 500 V":"3VA2716-7AB05-0AA0; Type of coordination 1, Iq = 65 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","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","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":"1x (20 ... 12), 2x (20 ... 14)","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","Blocking Voltage Of The Thyristor Maximum":"1 400 V","Evaluation Of Thermistor Motor Protection":"Yes; Type A PTC or Klixon / Thermoclick","Number Of Digital Outputs Parameterizable":"3","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":"177 ... 310 lbf·in","Recovery Time After Overload Trip Adjustable":"60 ... 1 800 s","for DIN cable lug for main contacts stranded":"2x (50 ... 240 mm²)","Number Of Digital Outputs Not Parameterizable":"1","Type Of Voltage Of The Control Supply Voltage":"AC","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":"210 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":"100 mA","for DIN cable lug for main contacts finely stranded":"2x (70 ... 240 mm²)","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":"1 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 catalog","For Auxiliary And Control Contacts With Screw-Type Terminals":"7 ... 10.3 lbf·in","For Control Circuit Finely Stranded With Core End Processing":"1x (0.5 ... 2.5 mm²), 2x (0.5 ... 1.5 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":"44 A","of back-up R fuse link for semiconductor protection usable up to 690 V":"3x3NE3340-8; Type of coordination 2, Iq = 65 kA","Duration Of Inrush Current Peak At Application Of Control Supply Voltage":"1.7 ms","relative negative tolerance of the control supply voltage at AC at 50 Hz":"-15 %","relative negative tolerance of the control supply voltage at AC at 60 Hz":"-15 %","relative positive tolerance of the control supply voltage at AC at 50 Hz":"10 %","relative positive tolerance of the control supply voltage at AC at 60 Hz":"10 %","of full range R fuse link for semiconductor protection usable up to 690 V":"3NB3354-1KK26; Type of coordination 2, Iq = 65 kA","Relative Negative Tolerance Of The Operating Voltage At Inside-Delta Circuit":"-15 %","Relative Positive Tolerance Of The Operating Voltage At Inside-Delta Circuit":"10 %"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/53c310dae3e46612fd39296aed157d10.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=831245&mlfb=3RW5556-6HA14"},"ai":{"faq":[{"question":"What ATEX certification does this soft starter carry?","answer":"The 3RW5556-6HA14 carries ATEX and IECEx certification, making it suitable for installation in explosive gas and dust atmospheres (Zone 1/2 and Zone 21/22) when properly integrated with the motor and cabling."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RW5556-6HA14","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/3RW5556-6HA14 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}}