{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA6400-1DB42","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA6400-1DB42","canonicalUrl":"https://aoctrl.com/siemens/3RA6400-1DB42","factsUrl":"https://aoctrl.com/api/mcp/products/3RA6400-1DB42","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS compact starter for IO-Link, 3RA6400-1DB42, direct starter design, 12 A at 400 V AC, 53 kA breaking capacity, 24 V DC coil, adjustable trip class 10/20, screw terminals, DIN rail mount.","salesMarkdown":"The Siemens 3RA6400-1DB42 is a SIRIUS compact starter designed as a direct starter for IO-Link communication. The adjustable trip class (CLASS 10 and 20) lets you match the thermal protection to the motor start profile — CLASS 10 for faster starts, CLASS 20 for higher-inertia loads like fans or conveyors. Rated at 12 A at 400 V AC (AC-3 motor switching duty), it handles motors up to 5.5 kW at 400 V, 7.5 hp at 460/480 V, and 10 hp at 575/600 V. The screw-type terminals on the main circuit accept 0.5 to 4 mm² solid or stranded wire, or two conductors 0.5 to 2.5 mm² each. ## IO-Link integration and configuration This compact starter supports IO-Link protocol at COM2 rate (38.4 kBaud), making it addressable from any IO-Link master for parameterization, diagnostics, and status monitoring. The three onboard LEDs provide local indication of device state, overload, and communication status. The IO-Link profile allows remote adjustment of the trip class, current setting, and restart behavior without opening the panel — useful for machine builders who want to standardize on one starter variant and configure it per motor at commissioning. It withstands shock at 60 m/s² (6 g) for 10 ms across three shocks in all axes, and vibration per 10 cycles at 4 to 5.8 Hz with 15 mm amplitude and 5.8 to 500 Hz at 20 m/s². The no-load switching frequency is rated at 3600 operations per hour.","metaTitle":"Siemens 3RA6400-1DB42 SIRIUS Compact Starter, 12 A, 24 V DC","metaDescription":"Siemens 3RA6400-1DB42 SIRIUS compact starter for IO-Link. 12 A at 400 V AC, 53 kA breaking capacity, adjustable trip class 10/20, 24 V DC coil. DIN rail mount.","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":"3RA6400-1DB42","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 3...12 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":"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":"screw-type 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":"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":"0.6 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":"12 x Ie","Product Function Short Circuit Protection":"Yes","Supply voltage required Auxiliary voltage":"Yes","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":"$373.38","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/434de6f13cd8d4d85f46adc62c54fca3.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=123840&mlfb=3RA6400-1DB42"},"ai":{"faq":[{"question":"How to wire the 3RA6400-1DB42 with screw terminals?","answer":"The main circuit uses screw-type terminals accepting solid or stranded wire from 0.5 to 4 mm², or two conductors each 0.5 to 2.5 mm². The coil is 24 V DC, drawing a maximum of 2.9 W."},{"question":"Is the 3RA6400-1DB42 compatible with 24 V DC only?","answer":"Yes, the coil is rated for 24 V DC only (24... 24 V DC). The type of voltage is DC, and the maximum power draw at rated voltage is 2.9 W."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA6400-1DB42","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/3RA6400-1DB42 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}}