{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA6400-2DB42","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA6400-2DB42","canonicalUrl":"https://aoctrl.com/siemens/3RA6400-2DB42","factsUrl":"https://aoctrl.com/api/mcp/products/3RA6400-2DB42","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS compact starter for IO-Link, direct starter design, 12 A at 400 V AC, adjustable trip class 10/20, 45 mm width, screw and snap-on mounting.","salesMarkdown":"## What this SIRIUS compact starter is The Siemens 3RA6400-2DB42 is a SIRIUS compact starter for IO-Link, a direct starter design that combines a contactor and overload relay in a single 45 mm wide package. Rated 12 A at 400 V AC, it handles motor loads up to 5.5 kW at 400 V, with an adjustable trip class of 10 or 20 to match the motor's thermal characteristic. At 45 mm wide, 191 mm tall, and 165 mm deep, it takes up a single 45 mm slot in the cabinet — tight enough for a crowded panel but leaves room for the spring-loaded main circuit terminals. The spring-loaded terminals on the main circuit accept 2x (0.25 to 1.5 mm²) solid or stranded wire — no ferrules needed, but strip length matters if you want a clean cage grip. ## IO-Link and control logic This starter communicates via IO-Link at COM2 speed (38.4 kBaud), so it feeds back motor current, trip status, and operational data to the controller without extra analog wiring. Three onboard LEDs give a quick visual on status — run, fault, and communication — handy when you're walking the line and don't want to break out a laptop. The coil is 24 V DC, drawing up to 2.9 W at rated voltage, so it's a light load on the 24 V supply but watch the inrush if you're ganging several on one bus. ## Environmental toughness Vibration resistance is tested to 20 m/s² at 5.8 to 500 Hz, and shock resistance to 6g for 10 ms on all axes — tough enough for a conveyor line or a pump skid.","metaTitle":"Siemens 3RA6400-2DB42 SIRIUS Compact Starter, 12 A, IO-Link","metaDescription":"Siemens 3RA6400-2DB42 SIRIUS compact starter for IO-Link, rated 12 A at 400 V AC, adjustable trip class 10/20. Current lifecycle stage. Sourced 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","Height":"191 mm","at 400 V":"53 kA","Trip Class":"CLASS 10 and 20 adjustable","Recommended":"vertical, on horizontal standard DIN rail","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":"5 500 W","at 480 V rated value":"12 A","at 500 V rated value":"3 kA","at 600 V rated value":"12 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":"spring-loaded terminals","at 200/208 V rated value":"3 hp","at 220/230 V rated value":"3 hp","at 460/480 V rated value":"7.5 hp","at 575/600 V rated value":"10 hp","at AC at 400 V rated value":"12 A","NO-Load Switching Frequency":"3 600 1/h","Of The Main Contacts Typical":"10 000 000","at AC in hot operating state":"1.8 W","at AC-3 at 400 V rated value":"5.5 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":"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 AC in hot operating state per pole":"0.6 W","for AWG cables for auxiliary contacts":"2x (24 ... 16)","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":"12 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 Limit Current Breaking Capacity":"10 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":"3 ... 12 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,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=178660&mlfb=3RA6400-2DB42","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RA6400-2DB42/alternatives.json"},"ai":{"faq":[{"question":"What is the price of 3RA6400-2DB42?","answer":"Pricing is confirmed at quote time based on current market conditions and quantity. Submit an RFQ for a firm price on this order code."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA6400-2DB42","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/3RA6400-2DB42 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}