{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA6400-2AB43","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA6400-2AB43","canonicalUrl":"https://aoctrl.com/siemens/3RA6400-2AB43","factsUrl":"https://aoctrl.com/api/mcp/products/3RA6400-2AB43","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA6400-2AB43 compact starter, direct starter design, 53 kA at 400 V, adjustable trip class 10/20, IO-Link COM2, 45 mm wide, screw and snap-on DIN rail mounting.","salesMarkdown":"## Breaking capacity and motor protection — 53 kA at 400 V The 3RA6400-2AB43: Rated 53 kA at 400 V AC, this compact starter handles high fault currents typical of industrial distribution — it can be applied downstream of a transformer or main breaker without worrying about SCCR gaps. The trip class is adjustable between CLASS 10 and CLASS 20, so you set the overload curve to match the motor's thermal withstand: CLASS 10 for submersible pumps or compressors that need fast trip, CLASS 20 for high-inertia loads like fans or centrifuges where starting current lasts longer. The 0.4 A at 400 V confirms the load current range. ## IO-Link integration — COM2 at 38.4 kBaud IO-Link protocol is built in, with a transfer rate of COM2 (38.4 kBaud). That's the medium speed tier — adequate for parameter upload, diagnostic readback, and status monitoring of the starter's three LEDs. For applications that need faster cycle times or streaming process data, COM2 is a constraint: expect ~2.6 ms cycle time per device, so plan the IO-Link master's port schedule accordingly. No AS-Interface — this is strictly IO-Link. ## Mounting and panel fit — 45 mm wide, any position The 3RA6400-2AB43 is 45 mm wide, 191 mm high, and 165 mm deep — a standard three-module-wide DIN rail footprint. Fastening is screw and snap-on mounting, recommended vertical on a horizontal standard mounting rail, but mounting position is any. That means you can lay it sideways in a shallow enclosure if needed, though vertical keeps the heat path clean. Solid wire capacity is 2x 0.25 to 1.5 mm² — typical for control wiring; the main circuit connection is plug-in without terminals, so the power base snaps onto the rail and the electronics module clips on top. ## Environmental and mechanical — -20 to +60 °C, 6g shock That covers most indoor industrial environments, including unheated warehouses. Shock resistance is 60 m/s² (6g) for 10 ms per 3 shocks in all axes; vibration resistance is 15 mm displacement at 4–5.8 Hz and 20 m/s² acceleration at 5.8–500 Hz for 10 cycles. This is robust enough for machine-mounted applications near conveyors or presses — not just panel-mounted in a quiet cabinet.","metaTitle":"Siemens 3RA6400-2AB43 SIRIUS Compact Starter, 53 kA, IO-Link","metaDescription":"Siemens 3RA6400-2AB43 SIRIUS compact starter with IO-Link, 53 kA breaking capacity at 400 V, adjustable trip 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":"2x (0.25 ... 1.5 mm²)","Width":"45 mm","at DC":"24 ... 24 V","title":"3RA6400-2AB43","Height":"191 mm","at 400 V":"53 kA","Trip Class":"CLASS 10 and 20 adjustable","Recommended":"vertical, on horizontal standard mounting 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: plug-in, without terminals Connection control circuit: Spring-type 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":"plug-in without 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 AWG cables for main contacts":"2x (16 ... 10), 1x 8","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":"spring-loaded 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 (24 ... 16)","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":"2x (0.25 ... 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","Finely Stranded Without Core End Processing":"2x (0.25 ... 1.5 mm²)","Formula For Breaking Capacity Limit Current":"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/8c3dccef73b70b98f4fe6048ab8d1f9d.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=193898&mlfb=3RA6400-2AB43"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA6400-2AB43","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/3RA6400-2AB43 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}}