{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RW5243-2AC15","brand":"Siemens","brandSlug":"siemens","productSlug":"3RW5243-2AC15","canonicalUrl":"https://aoctrl.com/siemens/3RW5243-2AC15","factsUrl":"https://aoctrl.com/api/mcp/products/3RW5243-2AC15","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RW5243-2AC15 soft starter, 90 A minimum motor rating, trip class 10A/10E/20E per IEC 60947-4-2, multi-protocol fieldbus, 200-600 V control supply, 203 x 210 x 393 mm.","salesMarkdown":"## What this soft starter does on the line The Siemens SIRIUS 3RW5243-2AC15 is a hybrid switching soft starter for three-phase induction motors, sized for a minimum motor current of 90 A and a control supply voltage range of 200 to 600 V. Its default trip class is CLASS 10A per IEC 60947-4-2, configurable to 10E or 20E — meaning you can match the overload protection curve to the motor's starting profile, from fast starts (10A) to extended acceleration (20E). The unit speaks PROFIBUS, Modbus RTU, Modbus TCP, and EtherNet/IP natively — no gateway hack required to fold it into a multi-vendor BMS or PLC network. ## Fieldbus integration and control options With PROFIBUS, Modbus RTU, Modbus TCP, and EtherNet/IP on board, this soft starter eliminates the need for a separate communication module in most panel builds. The analog output defaults to 4-20 mA but can be parameterized to 0-10 V using the High Feature HMI — useful when feeding a legacy analog input card. PROFIenergy support is available in conjunction with the PROFINET standard communication module, enabling energy management profiles during idle periods. Screw fixing to a vertical mounting surface; the unit is rotatable ±90° and tiltable ±22.5° front-to-back, giving panel builders flexibility in tight enclosures. Dimensions are 203 mm deep, 210 mm wide, and 393 mm high — plan for this footprint when laying out the gland plate and busbar runs. Clearance requirements: 100 mm above, 75 mm below, 10 mm forward, 5 mm to the side, and 0 mm backward — the back can sit flush against the panel wall. Carries UL, CSA, and CE marking, covering North American and European regulatory jurisdictions without additional certification work. Shock resistance rated at 15 g / 11 ms, with potential contact lifting above 12 g / 11 ms — relevant for applications on vibrating machinery or mobile equipment.","metaTitle":"Siemens 3RW5243-2AC15 SIRIUS Soft Starter, 90 A min","metaDescription":"Siemens SIRIUS 3RW5243-2AC15 soft starter, 90 A minimum motor rating, trip class 10A/10E/20E, PROFIBUS/Modbus/EtherNet/IP. UL/CSA/CE. Active production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Soft Starters"],"specifications":{"Depth":"203 mm","Width":"210 mm","title":"3RW5243-2AC15","Height":"393 mm","Minimum":"90 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","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 210 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":"364 A","at 50 °C rated value":"322 A","at 60 °C rated value":"294 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":"75 W","at 50 °C after startup":"68 W","at 60 °C after startup":"63 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":"9.9 kg","at 40 °C during startup":"3 562 W","at 50 °C during startup":"2 979 W","at 60 °C during startup":"2 617 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":"55 kW","at 400 V at 40 °C rated value":"110 kW","at 500 V at 40 °C rated value":"132 kW","At Inside-Delta Circuit Minimum":"156 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":"2x3NA3354-6; 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":"60 hp","at 220/230 V at 50 °C rated value":"60 hp","at 460/480 V at 50 °C rated value":"150 hp","at 575/600 V at 50 °C rated value":"150 hp","of circuit breaker usable at 400 V":"3VA2325-7MN32-0AA0; Type of coordination 1, Iq = 65 kA, CLASS 10","of circuit breaker usable at 500 V":"3VA2325-7MN32-0AA0; 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","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":"90 A","At Rotary Coding Switch On Switch Position 2":"98 A","At Rotary Coding Switch On Switch Position 3":"106 A","At Rotary Coding Switch On Switch Position 4":"114 A","At Rotary Coding Switch On Switch Position 5":"122 A","At Rotary Coding Switch On Switch Position 6":"130 A","At Rotary Coding Switch On Switch Position 7":"138 A","At Rotary Coding Switch On Switch Position 8":"146 A","At Rotary Coding Switch On Switch Position 9":"154 A","for DIN cable lug for main contacts stranded":"2x (50 ... 240 mm²)","At Rotary Coding Switch On Switch Position 10":"162 A","At Rotary Coding Switch On Switch Position 11":"170 A","At Rotary Coding Switch On Switch Position 12":"178 A","At Rotary Coding Switch On Switch Position 13":"186 A","At Rotary Coding Switch On Switch Position 14":"194 A","At Rotary Coding Switch On Switch Position 15":"202 A","At Rotary Coding Switch On Switch Position 16":"210 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","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":"2.2 A","of the gG fuse usable at inside-delta circuit up to 500 V":"2x3NA3354-6; Type of coordination 1, Iq = 65 kA","of circuit breaker usable at 400 V at inside-delta circuit":"3VA2440-7MN32-0AA0; Type of coordination 1, Iq = 65 kA, CLASS 10","of circuit breaker usable at 500 V at inside-delta circuit":"3VA2440-7MN32-0AA0; 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":"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":"156 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 2":"170 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 3":"184 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 4":"197 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 5":"211 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 6":"225 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 7":"239 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 8":"253 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 9":"267 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 10":"281 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 11":"294 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 12":"308 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 13":"322 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 14":"336 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 15":"350 A","For Inside-Delta Circuit At Rotary Coding Switch On Switch Position 16":"364 A","of back-up R fuse link for semiconductor protection usable up to 690 V":"3NE3333; 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":"3NE1230-2; 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/717669d3bfebb0fddb2225f958131e32.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=830635&mlfb=3RW5243-2AC15"},"ai":{"faq":[{"question":"Does 3RW5243-2AC15 support Modbus TCP?","answer":"Yes, Modbus TCP is supported natively, along with Modbus RTU, PROFIBUS, and EtherNet/IP."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RW5243-2AC15","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/3RW5243-2AC15 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}}