{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RW5148-1XC14","brand":"Siemens","brandSlug":"siemens","productSlug":"3RW5148-1XC14","canonicalUrl":"https://aoctrl.com/siemens/3RW5148-1XC14","factsUrl":"https://aoctrl.com/api/mcp/products/3RW5148-1XC14","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RW5148-1XC14 soft starter, 240 A minimum, 200-480 V rated, Class 10A/10E/20E, PROFIBUS, Modbus RTU, PROFINET, screw terminals, screw fixing.","salesMarkdown":"## SIRIUS soft starter for motor starting duty The Siemens 3RW5148-1XC14 is a SIRIUS-brand soft starter rated for a minimum operating current of 240 A at 200-480 V, designed to ramp motors up and down without the mechanical shock of across-the-line starting. It supports trip classes CLASS 10A (default), 10E, and 20E per IEC 60947-4-2, giving you the flexibility to match the thermal protection to the motor's starting profile — CLASS 10A for standard starts, 20E for high-inertia loads that need a longer ramp. ## Fieldbus and control integration Onboard PROFIBUS, Modbus RTU, and PROFINET interfaces let this soft starter drop into most industrial networks without an external gateway — the fieldbus slice is built in, not bolted on. The control circuit uses screw-type terminals, and the unit supports voltage ramp starting (30-100% starting voltage) and soft torque for gentle acceleration of conveyors or pumps. Stopping voltage is fixed at 50%, which means the motor decelerates under controlled torque until the contactor opens — useful for preventing water hammer in pump applications. ## Mounting and panel fit Dimensions are 417 mm high, 210 mm wide, and 203 mm deep — this is a large-frame soft starter that needs a backplate, not a DIN rail. Fastening is by screw fixing, with the mounting surface vertical and rotatable ±90° or tiltable ±22.5° front-to-back. Minimum clearance around the unit: 100 mm above, 75 mm below, 10 mm forward, 5 mm at the sides, and 0 mm backward — plan the enclosure depth and ventilation grilles accordingly to avoid derating. ## Environmental and derating considerations Pollution degree 3 per IEC 60947-4-2 means the unit is suitable for industrial environments with conductive dust or occasional condensation, but not for submersion or heavy washdown. Shock resistance is 15 g / 11 ms, with potential contact lifting above 12 g — relevant if the starter is mounted on a vibrating machine base or near a large contactor bank. ## Lifecycle and sourcing posture No stock-holding claim — lead time and price are per-quote.","metaTitle":"Siemens 3RW5148-1XC14 SIRIUS Soft Starter, 240 A, 200-480 V","metaDescription":"Siemens 3RW5148-1XC14 SIRIUS soft starter, 240 A minimum, 200-480 V rated, Class 10A/10E/20E, PROFIBUS/Modbus/PROFINET. Active production, quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Soft Starters"],"specifications":{"Depth":"203 mm","Width":"210 mm","title":"3RW5148-1XC14","Height":"417 mm","Minimum":"240 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 570 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 ... 50 %","Vibration Resistance":"15 mm to 6 Hz; 2g to 500 Hz","Ramp-Down (Soft Stop)":"Yes","at 40 °C rated value":"987 A","at 50 °C rated value":"873 A","at 60 °C rated value":"788 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":"14 W","at 50 °C after startup":"14 W","at 60 °C after startup":"14 W","For Main Current Circuit":"busbar connection","Number Of Analog Outputs":"1","Number Of Digital Inputs":"1","Weight Without Packaging":"9.75 kg","at 40 °C during startup":"10 241 W","at 50 °C during startup":"8 500 W","at 60 °C during startup":"7 663 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 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":"acc. to IEC 60947-4-2","Substance Prohibitance (Date)":"18.05.2018 00:00:00","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":"160 kW","at 400 V at 40 °C rated value":"315 kW","At Inside-Delta Circuit Minimum":"416 A","Width Of Connection Bar Maximum":"45 mm","Control Supply Voltage Frequency":"50 ... 60 Hz","Operating Measured Value Display":"Yes; with optional HMI","during storage acc. to IEC 60721":"1K6 (only occasional condensation), 1C2 (no salt mist), 1S2 (sand must not get inside the devices), 1M4","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":"480 V","Start-Up Ramp Time Of Soft Starter":"0 ... 20 s","during operation acc. 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 acc. to IEC 60721":"2K2, 2C1, 2S1, 2M2 (max. fall height 0.3 m)","of circuit breaker usable at 400 V":"3VA2580-6HN32-0AA0; Type of coordination 1, Iq = 65 kA, CLASS 10","of circuit breaker usable at 500 V":"3VA2580-6HN32-0AA0; Type of coordination 1, Iq = 65 kA, CLASS 10","reference code acc. to IEC 81346-2":"Q","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 %","Between Soft Starter And Motor Maximum":"800 m","Removable Terminal For Control Circuit":"Yes","of communication module PROFIBUS usable":"3RW5980-0CP00","Blocking Voltage Of The Thyristor Maximum":"1 400 V","of communication module Modbus RTU usable":"3RW5980-0CR00","utilization category acc. to IEC 60947-4-2":"AC-53b","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","for DIN cable lug for main contacts stranded":"2x (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","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","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 %","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","of the gG fuse usable at inside-delta circuit up to 500 V":"2x3NA3365-6; Type of coordination 1, Iq = 65 kA","of circuit breaker usable at 400 V at inside-delta circuit":"3VA2510-6HN32-0AA0; Type of coordination 1, Iq = 65 kA, CLASS 10","of circuit breaker usable at 500 V at inside-delta circuit":"3VA2510-6HN32-0AA0; 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 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":"416 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 2":"454 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 3":"492 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 4":"530 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 5":"568 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 6":"606 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 7":"644 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 8":"682 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 9":"721 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 10":"759 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 11":"797 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 12":"835 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 13":"873 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 14":"911 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 15":"949 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 16":"987 A","of back-up R fuse link for semiconductor protection usable up to 690 V":"3NE3340-8; Type of coordination 2, (soft starter in conjunction with the associated protective device circuit breaker/fuse), Iq = 65 kA","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 %","of full range R fuse link for semiconductor protection usable up to 690 V":"3NE1437-2; 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/7c26f57332e91f26e97ef98f94270c53.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=830839&mlfb=3RW5148-1XC14"},"ai":{"faq":[{"question":"What trip classes does the 3RW5148-1XC14 support?","answer":"It supports CLASS 10A (default), CLASS 10E, and CLASS 20E per IEC 60947-4-2. CLASS 10A is for standard motor starts; switch to 20E for high-inertia loads that need a longer acceleration ramp."},{"question":"What fieldbus protocols are built into the 3RW5148-1XC14?","answer":"PROFIBUS, Modbus RTU, and PROFINET are all onboard — no external gateway module required for these three common industrial networks."},{"question":"What are the mounting clearances for the 3RW5148-1XC14?","answer":"Minimum clearances: 100 mm above, 75 mm below, 10 mm forward, 5 mm at the sides, and 0 mm backward. Plan the enclosure layout to maintain airflow and avoid derating."},{"question":"What compliance documentation does Siemens provide for the 3RW5148-1XC14?","answer":"The unit is designed to IEC 60947-4-2 (trip class and pollution degree 3). Standard Siemens declarations for CE, UKCA, and RoHS/REACH are available on request — specify at RFQ if documentation is needed for your compliance file."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RW5148-1XC14","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/3RW5148-1XC14 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}}