{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RW5235-6AC05","brand":"Siemens","brandSlug":"siemens","productSlug":"3RW5235-6AC05","canonicalUrl":"https://aoctrl.com/siemens/3RW5235-6AC05","factsUrl":"https://aoctrl.com/api/mcp/products/3RW5235-6AC05","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RW5235-6AC05 soft starter, 68 A minimum, 200-600 V, Class 10A/10E/20E, PROFIBUS, Modbus RTU/TCP, EtherNet/IP, PROFINET, screw fixing, 306x185x203 mm.","salesMarkdown":"## Motor starting profile and trip class The 3RW5235-6AC05 is a SIRIUS soft starter rated for a minimum operating current of 68 A, meaning it handles motor loads from that floor upward — not suitable for fractional-horsepower motors below that threshold. Trip class defaults to CLASS 10A per IEC 60947-4-2, with selectable 10E and 20E for heavier start profiles like crushers or centrifuges. Voltage range spans 200 to 600 V, covering 208 V, 400 V, and 480 V global supplies without a tap change. Ambient rating is -25 to +60 °C during operation, but derating applies above 40 °C — relevant if the starter sits near a furnace or in a non-ventilated enclosure. Screw fixing to a vertical mounting surface; the unit can be rotated ±90° or tilted ±22.5° forward/back, giving flexibility in tight cabinets. Clearance requirements: 100 mm above, 10 mm forward, 75 mm below, 5 mm at the sides — plan the gland plate and busbar runs accordingly. Dimensions are 306 mm high, 185 mm wide, 203 mm deep. The hybrid switching device category means it combines semiconductor and contactor paths for reduced heat dissipation during run. ## Fieldbus and control features Onboard PROFIBUS, Modbus RTU, Modbus TCP, EtherNet/IP, and PROFINET standard — no separate gateway module needed. PROFINET also supports PROFIenergy for coordinated energy management during pauses. Analog output configurable as 4-20 mA (default) or 0-10 V via the High Feature HMI parameterization. Remote reset by cycling the 24 V control supply — useful for unmanned stations. Soft Torque and Pump Ramp Down are built in, reducing mechanical shock on belts and fluid hammer in pipelines. Torque Control is not available on this variant. ## Lifecycle and compliance Pollution degree 3 per IEC 60947-4-2, meaning it tolerates conductive dust and occasional condensation typical in mill environments. Shock resistance rated 15 g / 11 ms, with potential contact lifting above 12 g.","metaTitle":"Siemens 3RW5235-6AC05 SIRIUS Soft Starter, 68 A min","metaDescription":"Siemens 3RW5235-6AC05 SIRIUS soft starter, active production. 68 A minimum, 200-600 V, Class 10A/10E/20E, PROFIBUS/Modbus/EtherNet/IP.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Soft Starters"],"specifications":{"Depth":"203 mm","Width":"185 mm","title":"3RW5235-6AC05","Height":"306 mm","Minimum":"68 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 (default) / 10E / 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 143 A, 24 V AC/DC Screw terminals Analog output","CSA approval":"Yes","Remote Reset":"Yes; By turning off the control supply voltage","Analog Output":"Yes; 4 ... 20 mA (default) / 0 ... 10 V (parameterizable with High Feature HMI)","Error Logbook":"Yes; Only in conjunction with special accessories","Pump Ramp Down":"Yes","Service Factor":"1","Torque Control":"No","Firmware Update":"Yes","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","Inside-Delta Circuit":"Yes","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":"248 A","at 50 °C rated value":"222 A","at 60 °C rated value":"204 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":"55 W","at 50 °C after startup":"50 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":"1","Number Of Digital Inputs":"1","Weight Without Packaging":"6.6 kg","at 40 °C during startup":"2 127 W","at 50 °C during startup":"1 807 W","at 60 °C during startup":"1 605 W","For Control Circuit Solid":"1x (0.5 ... 4.0 mm²), 2x (0.5 ... 2.5 mm²)","Motor Overload Protection":"Yes; 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":"3","During Storage And Transport":"-40 ... +80 °C","Via Software Parameterizable":"No","at DC-13 at 24 V rated value":"1 A","Adjustable Current Limitation":"Yes","Electromagnetic Compatibility":"in accordance with IEC 60947-4-2","Substance Prohibitance (Date)":"02/15/2018","at AC-15 at 250 V rated value":"3 A","is supported HMI-High Feature":"Yes","of standard HMI module usable":"3RW5980-0HS00","Insulation Voltage Rated Value":"600 V","at 230 V at 40 °C rated value":"37 kW","at 400 V at 40 °C rated value":"75 kW","at 500 V at 40 °C rated value":"90 kW","At Inside-Delta Circuit Minimum":"118 A","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":"40 hp","at 220/230 V at 50 °C rated value":"40 hp","at 460/480 V at 50 °C rated value":"100 hp","at 575/600 V at 50 °C rated value":"125 hp","of circuit breaker usable at 400 V":"3VA2220-7MN32-0AA0; Type of coordination 1, Iq = 65 kA, CLASS 10","At Inside-Delta Circuit Rated Value":"200 ... 600 V","at the digital inputs at AC maximum":"100 m","at the digital inputs at DC maximum":"1 000 m","of communication module Ethernet/IP":"3RW5980-0CE00","Design Of The Overvoltage Protection":"Varistor","Surge Voltage Resistance Rated Value":"6 kV","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","Removable Terminal For Control Circuit":"Yes","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":"1 800 V","Evaluation Of Thermistor Motor Protection":"No","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":"68 A","At Rotary Coding Switch On Switch Position 2":"73 A","At Rotary Coding Switch On Switch Position 3":"78 A","At Rotary Coding Switch On Switch Position 4":"83 A","At Rotary Coding Switch On Switch Position 5":"88 A","At Rotary Coding Switch On Switch Position 6":"93 A","At Rotary Coding Switch On Switch Position 7":"98 A","At Rotary Coding Switch On Switch Position 8":"103 A","At Rotary Coding Switch On Switch Position 9":"108 A","for DIN cable lug for main contacts stranded":"2x (16 ... 95 mm²)","At Rotary Coding Switch On Switch Position 10":"113 A","At Rotary Coding Switch On Switch Position 11":"118 A","At Rotary Coding Switch On Switch Position 12":"123 A","At Rotary Coding Switch On Switch Position 13":"128 A","At Rotary Coding Switch On Switch Position 14":"133 A","At Rotary Coding Switch On Switch Position 15":"138 A","At Rotary Coding Switch On Switch Position 16":"143 A","Type Of Voltage Of The Control Supply Voltage":"AC/DC","Holding Current In Bypass Operation Rated Value":"380 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":"2x (25 ... 120 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","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","Locked-Rotor Current At Close Of Bypass Contact Maximum":"7.6 A","of the gG fuse usable at inside-delta circuit up to 500 V":"3NA3244-6; Type of coordination 1, Iq = 65 kA","of circuit breaker usable at 400 V at inside-delta circuit":"3VA2325-7MN32-0AA0; Type of coordination 1, Iq = 65 kA, CLASS 10","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 %","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 Inside-Delta Circuit At Rotary Coding Switch On Switch Position 1":"118 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 2":"126 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 3":"135 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 4":"144 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 5":"152 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 6":"161 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 7":"170 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 8":"178 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 9":"187 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 10":"196 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 11":"204 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 12":"213 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 13":"222 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 14":"230 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 15":"239 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 16":"248 A","of back-up R fuse link for semiconductor protection usable up to 690 V":"3NE3334-0B; Type of coordination 2, Iq = 65 kA","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 %","of full range R fuse link for semiconductor protection usable up to 690 V":"3NE1227-0; 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/4d664d108b00b7dbbc804edbbf071cc9.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=830609&mlfb=3RW5235-6AC05"},"ai":{"faq":[{"question":"What compliance documentation does Siemens provide for 3RW5235-6AC05?","answer":"CE marking, UL approval, and CSA approval are listed. The product carries pollution degree 3 and IEC 60947-4-2 classification — suitable for industrial control panels requiring those marks."},{"question":"What is the minimum motor current this soft starter can handle?","answer":"Minimum operating current is 68 A, relative to the smallest settable Ie. Below that, the starter cannot regulate starting current effectively — size down to a lower-rated SIRIUS unit for smaller motors."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RW5235-6AC05","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/3RW5235-6AC05 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}}