{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RW5127-1XC14","brand":"Siemens","brandSlug":"siemens","productSlug":"3RW5127-1XC14","canonicalUrl":"https://aoctrl.com/siemens/3RW5127-1XC14","factsUrl":"https://aoctrl.com/api/mcp/products/3RW5127-1XC14","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RW5127-1XC14 soft starter, rated 40.5 A minimum at 200-480 V, Trip Class 10A/10E/20E, PROFIBUS/Modbus RTU/PROFINET, screw fixing, 203×185×321 mm.","salesMarkdown":"## What this soft starter covers — motor range and starting profile The 3RW5127-1XC14: Trip Class defaults to CLASS 10A per IEC 60947-4-2, with selectable 10E and 20E profiles. For a pump or conveyor start that clears in under 10 seconds, the 10A setting holds; for high-inertia loads like a centrifuge that need a longer ramp, switch to 20E to avoid nuisance tripping on the overload curve. ## Fieldbus and control wiring — no extra modules needed PROFIBUS, Modbus RTU, and PROFINET are all onboard — one unit covers the three common industrial fieldbuses without a separate communication module. The control circuit terminates at screw-type terminals, so expect a screwdriver for the signal wiring, not a push-in tool. The analog output defaults to 4-20 mA and can be parameterized to 0-10 V through the High Feature HMI. That single output feeds motor current or power data back to the PLC without a separate transducer. ## Mounting and panel clearance — screw-fixed, not DIN-rail This unit is screw-fixed to the backplate — no DIN-rail latch. Dimensions are 203 mm deep, 185 mm wide, 321 mm tall. Clearance requirements: 100 mm above, 10 mm in front, 75 mm below, 5 mm at the sides, and zero behind. That zero backwards clearance means it can sit flush against the panel rear wall. Mounting position allows vertical surface orientation with ±90° rotation and ±22.5° tilt forward/back. For a panel layout, that gives flexibility to align the HMI display toward the door opening. ## Thermal environment and derating — watch the panel ambient If the panel ambient hits 50 °C, the continuous current rating drops — the datasheet derating curve is the reference for sizing. Shock resistance is 15 g at 11 ms, with potential contact lifting above 12 g. Vibration rating is 15 mm at 6 Hz and 2 g up to 500 Hz. These numbers matter if the soft starter mounts on a machine frame rather than a building floor.","metaTitle":"Siemens 3RW5127-1XC14 SIRIUS Soft Starter, 40.5 A, 200-480 V","metaDescription":"Siemens 3RW5127-1XC14 SIRIUS soft starter, rated 40.5 A minimum at 200-480 V. Active production. PROFIBUS, Modbus RTU, PROFINET onboard. Trip Class 10A/10E/20E.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Soft Starters"],"specifications":{"Depth":"203 mm","Width":"185 mm","title":"3RW5127-1XC14","Height":"321 mm","Minimum":"40.5 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","Modbus RTU":"Yes","Trip Class":"CLASS 10A (default) / 10E / 20E; acc. to IEC 60947-4-2","auto-RESET":"Yes","At The Side":"5 mm","Rated Value":"200 ... 480 V","Soft Torque":"Yes","description":"SIRIUS soft starter 200-480 V 93 A, 110-250 V AC Screw terminals without bypass, Analog output","HMI-Standard":"Yes","Remote Reset":"Yes; By turning off the control supply voltage","Voltage Ramp":"Yes","Analog Output":"Yes; 4 ... 20 mA (default) / 0 ... 10 V (parameterizable with High Feature HMI)","Error Logbook":"Yes","Service Factor":"1","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":"Yes","Minimum Load [%]":"15 %; Relative to smallest settable Ie","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","Inside-Delta Circuit":"Yes","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":"161 A","at 50 °C rated value":"143 A","at 60 °C rated value":"131 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":"12 W","at 50 °C after startup":"12 W","at 60 °C after startup":"12 W","For Main Current Circuit":"box terminal","Number Of Analog Outputs":"1","Number Of Digital Inputs":"1","Weight Without Packaging":"6.9 kg","at 40 °C during startup":"1 270 W","at 50 °C during startup":"1 077 W","at 60 °C during startup":"959 W","For Control Circuit Solid":"1x (0.5 ... 4.0 mm²), 2x (0.5 ... 2.5 mm²)","Motor Overload Protection":"Yes","Number Of Digital Outputs":"3","Via Software Configurable":"No","Impulse Voltage Rated Value":"6 V","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":"acc. to IEC 60947-4-2","Substance Prohibitance (Date)":"05/18/2018","at AC-15 at 250 V rated value":"3 A","of standard HMI module usable":"3RW5980-0HS00","Insulation Voltage Rated Value":"480 V","Ramp-Down Time Of Soft Starter":"0 ... 20 s","at 230 V at 40 °C rated value":"22 W","at 400 V at 40 °C rated value":"45 W","At Inside-Delta Circuit Minimum":"70.1 A","Width Of Connection Bar Maximum":"25 mm","Control Supply Voltage Frequency":"50 ... 60 Hz","Operating Measured Value Display":"Yes; with optional HMI","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":"3NA3136-6; Type of coordination 1, Iq = 65 kA","Between Main And Auxiliary Circuit":"480 V","Start-Up Ramp Time Of Soft Starter":"0 ... 20 s","of circuit breaker usable at 400 V":"3VA2216-7MN32-0AA0; Type of coordination 1, Iq = 15 kA, CLASS 10","of circuit breaker usable at 500 V":"3VA2216-7MN32-0AA0; Type of coordination 1, Iq = 10 kA, CLASS 10","At Inside-Delta Circuit Rated Value":"200 ... 480 V","at the digital inputs at AC maximum":"100 m","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","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","of communication module Modbus RTU usable":"3RW5980-0CR00","For Main Contacts With Screw-Type Terminals":"40 ... 53 lbf·in","At Rotary Coding Switch On Switch Position 1":"40.5 A","At Rotary Coding Switch On Switch Position 2":"44 A","At Rotary Coding Switch On Switch Position 3":"47.5 A","At Rotary Coding Switch On Switch Position 4":"51 A","At Rotary Coding Switch On Switch Position 5":"54.5 A","At Rotary Coding Switch On Switch Position 6":"58 A","At Rotary Coding Switch On Switch Position 7":"61.5 A","At Rotary Coding Switch On Switch Position 8":"65 A","At Rotary Coding Switch On Switch Position 9":"68.5 A","At Rotary Coding Switch On Switch Position 10":"72 A","At Rotary Coding Switch On Switch Position 11":"75.5 A","At Rotary Coding Switch On Switch Position 12":"79 A","At Rotary Coding Switch On Switch Position 13":"82.5 A","At Rotary Coding Switch On Switch Position 14":"86 A","At Rotary Coding Switch On Switch Position 15":"89.5 A","At Rotary Coding Switch On Switch Position 16":"93 A","Type Of Voltage Of The Control Supply Voltage":"AC","utilization category according to IEC 60947-4-2":"AC-53b","Product Feature Integrated Bypass Contact System":"No","of communication module PROFINET standard usable":"3RW5980-0CS00","Control Supply Current In Standby Mode Rated Value":"30 mA","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 mm; Derating as of 1000 m, see catalog","of the gG fuse usable at inside-delta circuit up to 500 V":"3NA3136-6; Type of coordination 1, Iq = 65 kA","of circuit breaker usable at 400 V at inside-delta circuit":"3VA2220-7MN32-0AA0; Type of coordination 1, Iq = 15 kA, CLASS 10","of circuit breaker usable at 500 V at inside-delta circuit":"3VA2220-7MN32-0AA0; Type of coordination 1, Iq = 10 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)","For Main Contacts For Box Terminal Using Both Clamping Points Solid":"2x (2.5 ... 16 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 Inside-Delta Circuit At Rotary Coding Switch On Switch Position 1":"70.1 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 2":"76.2 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 3":"82.3 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 4":"88.3 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 5":"94.4 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 6":"100 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 7":"107 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 8":"113 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 9":"119 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 10":"125 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 11":"131 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 12":"137 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 13":"143 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 14":"149 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 15":"155 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 16":"161 A","For Main Contacts For Box Terminal Using Both Clamping Points Stranded":"2x (6 ... 16 mm²), 2x (10 ... 50 mm²)","For Main Contacts For Box Terminal Using The Back Clamping Point Solid":"1x (2.5 ... 16 mm²)","of back-up R fuse link for semiconductor protection usable up to 690 V":"3NE4124; Type of coordination 2, (soft starter in conjunction with the associated protective device circuit breaker/fuse), Iq = 65 kA","For Main Contacts For Box Terminal Using The Front Clamping Point Solid":"1x (2.5 ... 16 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":"1x (10 ... 70 mm²)","of full range R fuse link for semiconductor protection usable up to 690 V":"3NE1224-0; Type of coordination 2, Iq = 65 kA","For Main Contacts For Box Terminal Using The Front Clamping Point Stranded":"1x (10 ... 70 mm²)","Relative Negative Tolerance Of The Operating Voltage At Inside-Delta Circuit":"-15 %","Relative Positive Tolerance Of The Operating Voltage At Inside-Delta Circuit":"10 %","For Main Contacts For Box Terminal Using Both Clamping Points Finely Stranded With Core End Processing":"2x (2.5 ... 35 mm²)","For Main Contacts For Box Terminal Using The Back Clamping Point Finely Stranded With Core End Processing":"1x (2.5 ... 50 mm²)","For Main Contacts For Box Terminal Using The Front Clamping Point Finely Stranded With Core End Processing":"1x (2.5 ... 50 mm²)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/f37154b94f114c2f272020fce1f18311.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=830830&mlfb=3RW5127-1XC14"},"ai":{"faq":[{"question":"What fieldbus protocols does the 3RW5127-1XC14 support?","answer":"PROFIBUS, Modbus RTU, and PROFINET are all integrated onboard — no separate communication module required."},{"question":"What are the clearance requirements around this soft starter?","answer":"Minimum clearances: 100 mm above, 10 mm in front, 75 mm below, 5 mm at the sides, and 0 mm behind — it can sit flush against the back panel."},{"question":"Can I adjust the starting voltage and stopping behavior?","answer":"Starting voltage is adjustable from 30-100%. Stopping voltage is fixed at 50%, non-adjustable. Soft Torque and Voltage Ramp profiles are available for different load types."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RW5127-1XC14","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/3RW5127-1XC14 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}}