{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA6400-1AB42","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA6400-1AB42","canonicalUrl":"https://aoctrl.com/siemens/3RA6400-1AB42","factsUrl":"https://aoctrl.com/api/mcp/products/3RA6400-1AB42","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA6400-1AB42 compact motor starter, direct starter design, 0.09 kW at 400 V AC-3, 24 V DC control, IO-Link, screw terminals, 45 mm wide.","salesMarkdown":"## SIRIUS compact starter with IO-Link — 0.09 kW at 400 V The Siemens 3RA6400-1AB42 is a SIRIUS compact starter designed as a direct starter for motor control in industrial automation. It integrates a contactor and overload relay into a single 45 mm-wide unit, saving panel space over discrete components. The 53 kA short-circuit current rating at 400 V means it can be installed on panels with high available fault current without requiring upstream current-limiting fuses in many cases. The control coil is 24 V DC, a standard PLC output voltage, simplifying wiring from a 24 VDC power supply. Power dissipation is minimal: 2.9 W at DC maximum and only 0.01 W at AC in hot operating state. ## Adjustable trip class and IO-Link communication The overload protection is adjustable between Class 10 and Class 20 trip curves, letting you match the thermal model to the motor's starting characteristics — Class 10 for high-inertia loads like fans, Class 20 for harder-starting loads like conveyors. This is set via IO-Link, not a physical dial. IO-Link communication runs at COM2 (38.4 kBaud), enabling parameterization, diagnostics, and status feedback directly to the controller. The three integrated LEDs indicate operating state and fault conditions. Rated for continuous operation per IEC 60947-6-2, with a no-load switching frequency of 3,600 operations per hour and a typical mechanical life of 10 million operations for both main and auxiliary contacts. ## Mounting, wiring, and environmental tolerance Mounts on standard 35 mm DIN rail via the snap-on mechanism, with screw fastening also supported. The mounting position is any, though vertical on horizontal DIN rail is recommended. Screw-type terminals are standard. Operating temperature range is -20 to +60 °C, with storage and transport limits of -55 to +80 °C. Vibration resistance is tested to 20 m/s² at 5.8–500 Hz, and shock resistance to 60 m/s² (6 g) with 10 ms pulses across all axes — suitable for machinery-mounted applications. No official successor or direct cross-reference is recorded — this is the current production variant. For BOM planning, the IO-Link parameter set and 24 V DC control coil are the defining characteristics that differentiate it from other SIRIUS compact starter variants.","metaTitle":"Siemens 3RA6400-1AB42 SIRIUS Compact Starter, 0.09 kW","metaDescription":"Siemens 3RA6400-1AB42 SIRIUS compact starter for IO-Link. 0.09 kW at 400 V AC-3, 53 kA SCCR, adjustable Class 10/20. Active production, quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Motor Starters"],"specifications":{"Depth":"165 mm","Solid":"0.5 ... 4 mm², 2x (0.5 ... 2.5 mm²)","Width":"45 mm","at DC":"24 ... 24 V","title":"3RA6400-1AB42","Height":"170 mm","at 400 V":"53 kA","Trip Class":"CLASS 10 and 20 adjustable","Recommended":"vertical, on horizontal standard DIN rail","description":"SIRIUS Compact load feeder DOL starter for IO-Link 690 V 24 V DC 0.1...0.4 A IP20 Connection main circuit: Screw terminal Connection control circuit: screw terminal","at DC maximum":"2.9 W","During Storage":"-55 ... +80 °C","number of LEDs":"3","Type Of Voltage":"DC","lifecycle_stage":"current","During Operation":"-20 ... +60 °C","During Transport":"-55 ... +80 °C","Fastening Method":"screw and snap-on mounting","IO-Link protocol":"Yes","Shock Resistance":"a=60 m/s2 (6g) with 10 ms per 3 shocks in all axes","Mounting Position":"any","at DC rated value":"24 V","Product Brand Name":"SIRIUS","Type Of Assignment":"continous operation according to IEC 60947-6-2","Degree Of Pollution":"3","Product Designation":"Compact starter for IO-Link","Vibration Resistance":"f= 4 ... 5.8 Hz, d= 15 mm; f= 5.8 ... 500 Hz, a= 20 m/s²; 10 cycles","at 400 V rated value":"90 W","at 480 V rated value":"0.4 A","at 500 V rated value":"3 kA","at 600 V rated value":"0.4 A","at 690 V rated value":"3 kA","AS-Interface protocol":"No","Design Of The Product":"direct starter","IO-Link transfer rate":"COM2 (38,4 kBaud)","For Main Current Circuit":"screw-type terminals","at AC at 400 V rated value":"0.4 A","NO-Load Switching Frequency":"3 600 1/h","Of The Main Contacts Typical":"10 000 000","at AC in hot operating state":"0.01 W","at AC-3 at 400 V rated value":"0.09 kW","Of Auxiliary Contacts Typical":"10 000 000","Substance Prohibitance (Date)":"05/01/2012","Insulation Voltage Rated Value":"690 V","at DC-13 at 6 A at 24 V typical":"30 000","at AC-15 at 6 A at 230 V typical":"200 000","degree of protection NEMA rating":"other","For Auxiliary And Control Circuit":"screw-type terminals","Of The Signaling Contacts Typical":"10 000 000","Design Of Short-Circuit Protection":"electromagnetic","Product Extension Auxiliary Switch":"Yes","Product Function Bus Communication":"Yes","Relative Humidity During Operation":"10 ... 90 %","Without Load Current Share Typical":"2.9 W","Surge Voltage Resistance Rated Value":"6 000 V","at AWG cables for auxiliary contacts":"2x (20 ... 14)","at AC in hot operating state per pole":"0.01 W","due to burst according to IEC 61000-4-4":"4 kV main circuits, 2 kV auxiliary circuits, 2 kV IO-Link, 2 kV limit switches, 2 kV line hand-held device","reference code according to IEC 81346-2":"Q","Finely Stranded With Core End Processing":"0.5 ... 2.5 mm², 2x (0.5 ... 1.5 mm²)","Number Of Poles For Main Current Circuit":"3","Formula For Making Capacity Limit Current":"120 x Ie","Product Function Short Circuit Protection":"Yes","Supply voltage required Auxiliary voltage":"Yes","Formula For Limit Current Breaking Capacity":"100 x Ie","at AC-41 according to IEC 60947-6-2 maximum":"750 1/h","at AC-43 according to IEC 60947-6-2 maximum":"250 1/h","with high demand rate according to SN 31920":"50 %","number of NC contacts for auxiliary contacts":"0","number of NO contacts for auxiliary contacts":"0","operating voltage at AC-3 rated value maximum":"690 V","electrostatic discharge according to IEC 61000-4-2":"8 kV","Type Of Voltage Supply Via Input/Output Link Master":"No","Product Component Removable Terminal For Main Circuit":"Yes","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","product function control circuit interface with IO link":"Yes","conducted HF interference emissions according to CISPR11":"150 kHz ... 30 MHz Class A","field-bound HF interference emission according to CISPR11":"30 ... 1000 MHz Class A","operational current of auxiliary contacts at AC-12 maximum":"10 A","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 10 A","Product Function Control Circuit Interface To Parallel Wiring":"No","Of The Address Range Of The Inputs With Cyclical Transfer Total":"2 byte","Of The Address Range Of The Outputs With Cyclical Transfer Total":"2 byte","Display Version As Status Display Of The Input/Output Link Device":"green/red dual LED","point-to-point cycle time between master and IO-Link device minimum":"2.5 ms","Product Component Removable Terminal For Auxiliary And Control Circuit":"Yes","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"0.1 ... 0.4 A","number of NO contacts of instantaneous short-circuit trip unit for signaling contact":"0","number of CO contacts of the current-dependent overload release for signaling contact":"0"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/a8e454eefb096ab84f3dffe9387d2b65.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=226298&mlfb=3RA6400-1AB42"},"ai":{"faq":[{"question":"What is the short-circuit current rating (SCCR) of the 3RA6400-1AB42?","answer":"The 3RA6400-1AB42 has a short-circuit current rating of 53 kA at 400 V. This high withstand rating allows installation in panels with substantial available fault current without requiring additional upstream protection in many configurations."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA6400-1AB42","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/3RA6400-1AB42 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}}