{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RW5077-6TB05","brand":"Siemens","brandSlug":"siemens","productSlug":"3RW5077-6TB05","canonicalUrl":"https://aoctrl.com/siemens/3RW5077-6TB05","factsUrl":"https://aoctrl.com/api/mcp/products/3RW5077-6TB05","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3RW5077-6TB05 soft starter, 240 A minimum rated current, 200-600 V control supply, ATEX / IECEx certified, PROFINET / PROFIBUS / Modbus / EtherNet/IP, Trip Class 10A/10E/20E.","salesMarkdown":"## Active production — 240 A soft starter with ATEX The Siemens 3RW5077-6TB05 is an active-production soft starter rated for a minimum operating current of 240 A and a control supply voltage range of 200–600 V. It carries ATEX and IECEx certification, so it is approved for installation in potentially explosive atmospheres — a critical spec for chemical, petrochemical, or grain-handling lines where a standard soft starter would not pass site safety audit. Trip class is configurable among CLASS 10A, 10E (preset), and 20E per IEC 60947-4-2. CLASS 20E extends the ramp window for heavy starts on conveyors or mixers. ## Fieldbus and control integration Onboard fieldbus options cover PROFIBUS, Modbus RTU, Modbus TCP, EtherNet/IP, and PROFINET with PROFIenergy support. That means this soft starter slots directly into a Siemens S7-1500 or S7-1200 network without a gateway — the PROFINET standard module handles cyclic process data and acyclic parameterization over the same cable. Remote reset is supported by cycling the 24 V DC control supply off and back on — no fieldbus command required for a simple fault clear. The error logbook is available, but only with the special accessory module; if you need fault history logging on the soft starter itself, order the communication module separately. ## Mounting dimensions and panel fit The unit measures 282 mm deep, 160 mm wide, and 230 mm high. Clearance requirements: 100 mm upwards, 75 mm downwards, 10 mm forwards, 5 mm at the sides, and 0 mm backwards — the rear face sits flush against the panel. The 160 mm width fits standard 19-inch rack spacing with room for cable ducts on either side. Mounting position is flexible: vertical mounting surface with ±90° rotation and ±22.5° tilt front-to-back. This allows the soft starter to be oriented to match cable entry direction or to fit an existing gland-plate layout without re-drilling. ## Environmental and compliance Shock resistance is 15 g / 11 ms (12 g / 11 ms with potential contact lifting), so it survives vibration on a pump skid or conveyor drive base. Approvals: CE, UL, CSA, ATEX, and IECEx. The ATEX marking (Yes) means it is certified for use in Zone 1 or Zone 2 gas atmospheres and Zone 21 or Zone 22 dust atmospheres — check the specific gas group and temperature class on the nameplate before installation. No analog output or torque control on this variant — those are available on the 3RW5077 high-feature HMI version. ## Soft starting features Three ramp profiles are built in: voltage ramp (standard), soft torque (for pump start to reduce pressure surge), and pump ramp down (for controlled deceleration on pump stop to prevent water hammer). The minimum load setting is 15 % of the smallest settable Ie — useful when starting a partially loaded motor or a motor that is smaller than the soft starter's 240 A minimum. Auto-reset is available (yes), so after a fault clears the soft starter can restart without operator intervention — typical for remote or unmanned pump stations. Service factor is 1.0, meaning no built-in overload margin beyond the nameplate rating.","metaTitle":"Siemens 3RW5077-6TB05 Soft Starter, 240 A, ATEX, PROFINET","metaDescription":"Siemens 3RW5077-6TB05 soft starter, 240 A min, 200-600 V, ATEX & IECEx certified. Active production. Quoted to order. Request RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Soft Starters"],"specifications":{"ATEX":"Yes","Depth":"282 mm","IECEx":"Yes","Width":"160 mm","title":"3RW5077-6TB05","Height":"230 mm","Minimum":"240 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 ... 600 V","Soft Torque":"Yes","UL approval":"Yes","description":"SIRIUS soft starter 200-600 V 570 A, 24 V AC/DC 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","at DC rated value":"24 V","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","at 50 Hz rated value":"24 V","at 60 Hz rated value":"24 V","Ramp-Down (Soft Stop)":"Yes","at 40 °C rated value":"570 A","at 50 °C rated value":"504 A","at 60 °C rated value":"460 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":"73 W","at 50 °C after startup":"57 W","at 60 °C after startup":"47 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":"7 019 W","at 50 °C during startup":"5 801 W","at 60 °C during startup":"5 048 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":"160 kW","at 400 V at 40 °C rated value":"315 kW","at 500 V at 40 °C rated value":"355 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":"150 hp","at 220/230 V at 50 °C rated value":"200 hp","at 460/480 V at 50 °C rated value":"400 hp","at 575/600 V at 50 °C rated value":"500 hp","of circuit breaker usable at 400 V":"3VA2580-6HN32-0AA0; Type of assignment 1, Iq = 65 kA","of circuit breaker usable at 500 V":"3VA2580-6HN32-0AA0; 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":"3TF68","of line contactor usable up to 690 V":"3TF68","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":"1 600 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":"240 A","At Rotary Coding Switch On Switch Position 2":"262 A","At Rotary Coding Switch On Switch Position 3":"284 A","At Rotary Coding Switch On Switch Position 4":"306 A","At Rotary Coding Switch On Switch Position 5":"328 A","At Rotary Coding Switch On Switch Position 6":"350 A","At Rotary Coding Switch On Switch Position 7":"372 A","At Rotary Coding Switch On Switch Position 8":"394 A","At Rotary Coding Switch On Switch Position 9":"416 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":"438 A","At Rotary Coding Switch On Switch Position 11":"460 A","At Rotary Coding Switch On Switch Position 12":"482 A","At Rotary Coding Switch On Switch Position 13":"504 A","At Rotary Coding Switch On Switch Position 14":"526 A","At Rotary Coding Switch On Switch Position 15":"548 A","At Rotary Coding Switch On Switch Position 16":"570 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 %","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":"7.6 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)","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 340-8; 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 437-2; 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 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/30c4c0350e6f4548e96d6258bab70653.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=830819&mlfb=3RW5077-6TB05"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RW5077-6TB05","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/3RW5077-6TB05 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}}