{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RW5248-2AC14","brand":"Siemens","brandSlug":"siemens","productSlug":"3RW5248-2AC14","canonicalUrl":"https://aoctrl.com/siemens/3RW5248-2AC14","factsUrl":"https://aoctrl.com/api/mcp/products/3RW5248-2AC14","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RW5248-2AC14 soft starter, 240 A minimum, 200-480 V rated, Class 10A/10E/20E, screw fixing, 203x210x393 mm.","salesMarkdown":"## Sizing this soft starter for the motor line The 3RW5248-2AC14 is a SIRIUS hybrid switching device rated for a minimum motor current of 240 A at a rated voltage of 200-480 V — this sets the floor for the motor FLA it can start, not the ceiling; the actual continuous current capacity depends on the trip class selected and ambient derating. Trip class is configurable as CLASS 10A (default), 10E, or 20E per IEC 60947-4-2, which governs how long the starter can sustain inrush current during acceleration — 10A allows 10 seconds at 7× FLA, 20E allows 20 seconds at the same multiple, so match the class to the load's acceleration time: conveyors and pumps typically run 10A; high-inertia fans or centrifuges may need 20E. ## Fieldbus and control wiring This unit supports PROFIBUS, Modbus RTU, Modbus TCP, EtherNet/IP, and PROFINET standard — the fieldbus interface is onboard for PROFIBUS and Modbus RTU; Modbus TCP, EtherNet/IP, and PROFINET require the optional communication module, so confirm the BOM includes the correct module if the network is Ethernet-based. Analog output is 4-20 mA (default) or 0-10 V (parameterizable with the High Feature HMI), giving a speed or current signal back to the PLC — useful for monitoring motor load without a separate transducer. ## Mounting and clearance for panel layout Fastening method is screw fixing — no DIN-rail clip; the unit bolts directly to the back panel. Dimensions are 203 mm depth, 210 mm width, 393 mm height, so allocate a cutout or mounting plate area at least 210×393 mm plus clearance. Required clearance distances: 100 mm upwards, 10 mm forwards, 0 mm backwards, 75 mm downwards, and 5 mm at the side — the zero backward clearance means it can sit flush against the back panel or a busbar, but the upward gap is critical for heat dissipation from the power stack. Mounting position allows vertical surface with ±90° rotation and ±22.5° tilt forward/back, giving flexibility in tight enclosures — but the derating note above 40 °C applies regardless of orientation. ## Compliance and documentation for cross-border shipment CE marking, UL approval, and CSA approval are all confirmed on this variant — the UL and CSA marks cover North American installations; CE covers European machinery directive compliance. Shock resistance is 15 g / 11 ms, with potential contact lifting noted from 12 g / 11 ms — this matters for transport or installation in high-vibration environments like mobile equipment or near large contactors.","metaTitle":"Siemens 3RW5248-2AC14 Soft Starter, 240 A, 200-480 V, SIRIUS","metaDescription":"Siemens 3RW5248-2AC14 SIRIUS soft starter, 240 A minimum, 200-480 V rated, Class 10A/10E/20E. UL/CSA/CE. Active production. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Soft Starters"],"specifications":{"Depth":"203 mm","Width":"210 mm","title":"3RW5248-2AC14","Height":"393 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","CE marking":"Yes","Modbus RTU":"Yes","Modbus TCP":"Yes","Trip Class":"CLASS 10A (default) / 10E / 20E; acc. to IEC 60947-4-2; 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 570 A, 110-250 V AC spring-type 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","Product Brand Name":"SIRIUS","Degree Of Pollution":"3, acc. to IEC 60947-4-2","For Control Circuit":"spring-loaded 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","Ramp-Down (Soft Stop)":"Yes","at 40 °C rated value":"987 A","at 50 °C rated value":"873 A","at 60 °C rated value":"796 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":"183 W","at 50 °C after startup":"163 W","at 60 °C after startup":"153 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":"10.6 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":"2x (0.25 ... 1.5 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":"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; 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; 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","of circuit breaker usable at 400 V":"3VA2580-6HN32-0AA0; Type of coordination 1, Iq = 65 kA, CLASS 10 ; 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 ; Type of coordination 1, Iq = 65 kA, CLASS 10","At Inside-Delta Circuit Rated Value":"200 ... 480 V","at the digital inputs at AC maximum":"100 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":"2x (24 ... 16)","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":"1 600 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":"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","Holding Current In Bypass Operation Rated Value":"100 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":"2x (70 ... 240 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","Inrush Current By Closing The Bypass Contacts Maximum":"2.2 A","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; 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; 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 ; 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 ; 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":"2x (0.25 ... 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, Iq = 65 kA ; Type of coordination 2, 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 ; Type of coordination 2, Iq = 65 kA","at AWG cables for control circuit finely stranded with core end processing":"2x (24 ... 16)","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/529890edf4ffddcffb6ea9d98005cdb1.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=830714&mlfb=3RW5248-2AC14"},"ai":{"faq":[{"question":"What trip classes does 3RW5248-2AC14 support?","answer":"It supports CLASS 10A (default), 10E, and 20E per IEC 60947-4-2. CLASS 10A is the standard for most motor starts under 10 seconds; 20E extends the acceleration window for high-inertia loads without nuisance tripping."},{"question":"What fieldbus protocols does 3RW5248-2AC14 support?","answer":"Onboard protocols are PROFIBUS and Modbus RTU. With the optional communication module it also supports Modbus TCP, EtherNet/IP, and PROFINET standard, plus PROFIenergy when using the PROFINET module."},{"question":"What are the clearance requirements for mounting 3RW5248-2AC14?","answer":"Minimum clearances: 100 mm above, 10 mm in front, 0 mm behind, 75 mm below, and 5 mm at the sides. The zero rear clearance allows flush back-panel mounting, but the 100 mm upward gap is essential for airflow."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RW5248-2AC14","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/3RW5248-2AC14 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}}