{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RW5056-6TB14","brand":"Siemens","brandSlug":"siemens","productSlug":"3RW5056-6TB14","canonicalUrl":"https://aoctrl.com/siemens/3RW5056-6TB14","factsUrl":"https://aoctrl.com/api/mcp/products/3RW5056-6TB14","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RW5056-6TB14 soft starter, 81 A minimum, 200-480 V, screw fixing, ATEX/IECEx, PROFIBUS, Modbus RTU/TCP, EtherNet/IP, Trip Class 10A/10E/20E.","salesMarkdown":"## 81 A minimum, 200-480 V — motor starting for ATEX zones The Siemens 3RW5056-6TB14 is a SIRIUS soft starter with a minimum rated current of 81 A and a rated voltage of 200 to 480 V, making it suitable for medium-sized induction motors in applications requiring controlled acceleration and deceleration. Its Trip Class is preset to CLASS 10A / 10E, with CLASS 20E selectable per IEC 60947-4-2, meaning it protects the motor during start-up by limiting thermal stress — CLASS 10A is typical for standard starts, while CLASS 20E allows longer acceleration for high-inertia loads. The unit carries ATEX and IECEx certification, so it can be installed in potentially explosive atmospheres — a key differentiator from standard soft starters that lack hazardous-area approvals. This makes it a fit for chemical, oil-and-gas, or grain-handling lines where the starter must sit in or near the classified zone. The 3RW5056-6TB14 mounts via screw fixing to a vertical surface, with the mounting surface rotatable ±90° and tiltable ±22.5° to the front and back. Clearance requirements: 100 mm upwards, 10 mm forwards, 0 mm backwards, 75 mm downwards, and 5 mm at the side — plan these gaps into the panel layout to avoid derating or airflow restriction. Dimensions are 120 mm wide, 198 mm high, and 249 mm deep. Shock resistance is rated at 15 g / 11 ms, dropping to 12 g / 11 ms with potential contact lifting — ensure the mounting bracket and panel are rigid enough to avoid exceeding these limits in high-vibration environments. Approvals include CE marking, UL approval, and CSA approval, covering the major North American and European regulatory jurisdictions. No official successor or replacement is listed — this is the active variant for new designs.","metaTitle":"Siemens 3RW5056-6TB14 Soft Starter, 81 A, 200-480 V, ATEX","metaDescription":"Siemens 3RW5056-6TB14 soft starter rated 81 A min, 200-480 V. Supports PROFIBUS, Modbus RTU/TCP, EtherNet/IP. ATEX/IECEx certified. Trip Class 10A/10E/20E.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Soft Starters"],"specifications":{"ATEX":"Yes","Depth":"249 mm","IECEx":"Yes","Width":"120 mm","title":"3RW5056-6TB14","Height":"198 mm","Minimum":"81 A","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","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 171 A, 110-250 V AC Screw 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","Product Brand Name":"SIRIUS","Degree Of Pollution":"3, acc. to IEC 60947-4-2","For Control Circuit":"screw-type 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","Ramp-Down (Soft Stop)":"Yes","at 40 °C rated value":"171 A","at 50 °C rated value":"153 A","at 60 °C rated value":"141 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":"29 W","at 50 °C after startup":"23 W","at 60 °C after startup":"20 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":"5.2 kg","at 40 °C during startup":"1 751 W","at 50 °C during startup":"1 478 W","at 60 °C during startup":"1 308 W","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)","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":"45 kW","at 400 V at 40 °C rated value":"90 kW","Width Of Connection Bar Maximum":"25 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":"3NA3244-6; 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":"50 hp","at 220/230 V at 50 °C rated value":"50 hp","at 460/480 V at 50 °C rated value":"100 hp","of circuit breaker usable at 400 V":"3VA2220-7MN32-0AA0; Type of assignment 1, Iq = 20 kA","of circuit breaker usable at 500 V":"3VA2220-7MN32-0AA0; Type of assignment 1, Iq = 20 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":"3RT1056","of line contactor usable up to 690 V":"3RT1064","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":"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","accuracy class according to IEC 61557-12":"5 %","Blocking Voltage Of The Thyristor Maximum":"1 400 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":"89 ... 124 lbf·in","At Rotary Coding Switch On Switch Position 1":"81 A","At Rotary Coding Switch On Switch Position 2":"87 A","At Rotary Coding Switch On Switch Position 3":"93 A","At Rotary Coding Switch On Switch Position 4":"99 A","At Rotary Coding Switch On Switch Position 5":"105 A","At Rotary Coding Switch On Switch Position 6":"111 A","At Rotary Coding Switch On Switch Position 7":"117 A","At Rotary Coding Switch On Switch Position 8":"123 A","At Rotary Coding Switch On Switch Position 9":"129 A","at AWG cables for main current circuit solid":"4 ... 250 kcmil","for DIN cable lug for main contacts stranded":"16 ... 95 mm²","At Rotary Coding Switch On Switch Position 10":"135 A","At Rotary Coding Switch On Switch Position 11":"141 A","At Rotary Coding Switch On Switch Position 12":"147 A","At Rotary Coding Switch On Switch Position 13":"153 A","At Rotary Coding Switch On Switch Position 14":"159 A","At Rotary Coding Switch On Switch Position 15":"165 A","At Rotary Coding Switch On Switch Position 16":"171 A","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":"80 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":"30 mA","for DIN cable lug for main contacts finely stranded":"25 ... 120 mm²","Relative Negative Tolerance Of The Operating Voltage":"-15 %","Relative Positive Tolerance Of The Operating Voltage":"10 %","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","Locked-Rotor Current At Close Of Bypass Contact Maximum":"2.5 A","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)","For Main Contacts For Box Terminal Using Both Clamping Points Solid":"max. 1x 95 mm², 1x 120 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":"12.2 A","For Main Contacts For Box Terminal Using Both Clamping Points Stranded":"max. 2x 120 mm²","For Main Contacts For Box Terminal Using The Back Clamping Point Solid":"16 ... 120 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":"16 ... 120 mm²","Duration Of Inrush Current Peak At Application Of Control Supply Voltage":"2.2 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 %","For Main Contacts For Box Terminal Using The Back Clamping Point Stranded":"16 ... 120 mm²","of full range R fuse link for semiconductor protection usable up to 690 V":"3NE1 230-0; Type of coordination 2, Iq = 65 kA","For Main Contacts For Box Terminal Using The Front Clamping Point Stranded":"16 ... 70 mm²","at AWG cables for main contacts for box terminal using the back clamping point":"6 ... 250 kcmil","at AWG cables for main contacts for box terminal using the front clamping point":"6 ... 250 kcmil","For Main Contacts For Box Terminal Using Both Clamping Points Finely Stranded With Core End Processing":"max. 1x 95 mm², 1x 120 mm²","For Main Contacts For Box Terminal Using Both Clamping Points Finely Stranded Without Core End Processing":"max. 1x 95 mm², 1x 120 mm²","For Main Contacts For Box Terminal Using The Back Clamping Point Finely Stranded With Core End Processing":"16 ... 120 mm²","For Main Contacts For Box Terminal Using The Front Clamping Point Finely Stranded With Core End Processing":"16 ... 120 mm²","For Main Contacts For Box Terminal Using The Back Clamping Point Finely Stranded Without Core End Processing":"10 ... 120 mm²","For Main Contacts For Box Terminal Using The Front Clamping Point Finely Stranded Without Core End Processing":"10 ... 120 mm²"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/7281de589bfeffffd56c2d5f86f5bea6.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=830524&mlfb=3RW5056-6TB14"},"ai":{"faq":[{"question":"What is the rated current of Siemens 3RW5056-6TB14 soft starter?","answer":"The minimum rated current is 81 A, with a rated voltage of 200 to 480 V. The Trip Class is preset to CLASS 10A / 10E, with CLASS 20E selectable per IEC 60947-4-2."},{"question":"Does the 3RW5056-6TB14 support PROFIBUS and Modbus?","answer":"Yes, it supports PROFIBUS, Modbus RTU, Modbus TCP, and EtherNet/IP, giving flexibility across Siemens and Rockwell automation environments."},{"question":"What is 3RW5056-6TB14's ATEX certification?","answer":"It carries ATEX and IECEx certification, allowing installation in potentially explosive atmospheres — a key feature for hazardous-area motor starting."},{"question":"Where can I buy the Siemens 3RW5056-6TB14 soft starter?","answer":"This part is sourced to order; availability and pricing are confirmed at the time of quote."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RW5056-6TB14","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/3RW5056-6TB14 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}}