{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2130-4KA38-0NB3","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2130-4KA38-0NB3","canonicalUrl":"https://aoctrl.com/siemens/3RA2130-4KA38-0NB3","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2130-4KA38-0NB3","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA2130-4KA38-0NB3 direct-on-line starter, S2 size, 73 A AC-3 at 400 V, Class 10 thermal overload, screw-type terminals, DIN-rail mount.","salesMarkdown":"## 73 A AC-3 — the number that decides the motor load The 3RA2130-4KA38-0NB3: At 480 V it delivers 65 A; at 600 V it holds 62 A. The AC-3 rating governs the contactor's ability to make and break locked-rotor current, so this starter handles motors up to about 37 kW at 400 V without derating. ## DIN-rail footprint and panel fit Mounts on two 35 mm DIN rails via screw and snap-on fastening — the 274 mm height and 55 mm width mean it occupies three adjacent 18 mm module spaces plus the rail overhang. Depth is 150 mm, which clears most 200 mm deep enclosures. Clearance requirements: 50 mm above, 32 mm in front, 10 mm below, 10 mm at the sides, and 0 mm behind — the back sits flush against the rail. ## Class 10 overload — what the trip curve means That's the standard for standard-duty motor starting: the inrush transient clears before the bimetal heats up, but a sustained overload or phase-loss condition locks out fast enough to protect the winding insulation. The release is temperature-compensated across the -20 to +60 °C operating range. ## What's in the box — supplied subassemblies This order code ships as a factory-assembled unit containing a 3RT2038-1NB30 contactor and a 3RA2931-1AA00 link module. The main-circuit terminals are screw-type. The control coil is rated 20–33 V at 50/60 Hz, drawing 2 VA. The circuit-breaker size is S2, matching the load feeder size.","metaTitle":"Siemens 3RA2130-4KA38-0NB3 SIRIUS Motor Starter, 73 A AC-3","metaDescription":"Siemens 3RA2130-4KA38-0NB3 SIRIUS direct-on-line starter, 73 A at 400 V AC-3, Class 10, S2 size. Active production — quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Starters"],"specifications":{"Depth":"150 mm","Width":"55 mm","title":"3RA2130-4KA38-0NB3","Height":"274 mm","Upwards":"50 mm","Forwards":"32 mm","at 50 Hz":"2 VA","at 60 Hz":"2 VA","Backwards":"0 mm","Downwards":"10 mm","Trip Class":"CLASS 10","At The Side":"10 mm","Rated Value":"20 ... 33 V","description":"Load feeder fuseless, Direct-on-line starting 400 V AC, Size S2 62... 65 A 20... 33 V AC/DC screw terminal for installation on standard mounting rail (also fulfills type of coordination 1) Type of coordination 2, Iq = 100 kA 1 NO+1 NC (contactor) with circuit (integrated)","During Storage":"-50 ... +80 °C","lifecycle_stage":"current","During Operation":"-20 ... +60 °C","During Transport":"-50 ... +80 °C","Fastening Method":"screw and snap-on mounting to two 35 mm DIN rails","Mounting Position":"vertical, horizontal","PROFIsafe protocol":"No","Product Brand Name":"SIRIUS","Type Of Assignment":"2","Product Designation":"Direct (on-line) starter","Size Of Load Feeder":"S2","PROFINET IO protocol":"No","at 400 V rated value":"37 000 kW","at 480 V rated value":"65 A","at 50 Hz rated value":"20 ... 33 V","at 60 Hz rated value":"20 ... 33 V","at 600 V rated value":"62 A","Design Of The Product":"for standard rail or screw mounting","For Main Current Circuit":"screw-type terminals","Temperature Compensation":"-20 ... +60 °C","Of The Supplied Contactor":"3RT2038-1NB30","Of The Supplied Link Module":"3RA2931-1AA00","Size Of The Circuit-Breaker":"S2","at AC-3 rated value maximum":"690 V","at AC-3 at 400 V rated value":"73 A","Substance Prohibitance (Date)":"03/01/2017","at AC-3e at 400 V rated value":"73 A","Design Of The Overload Release":"thermal (bimetallic)","Design Of The Switching Contact":"electromechanical","Operating Frequency Rated Value":"50 ... 60 Hz","Design Of The Short-Circuit Trip":"magnetic","Of The Supplied Circuit-Breakers":"3RV2031-4KA10","degree of protection NEMA rating":"other","For Auxiliary And Control Circuit":"screw-type terminals","Product Extension Auxiliary Switch":"Yes","Relative Humidity During Operation":"10 ... 95 %","Without Load Current Share Typical":"2 W","holding power of magnet coil at DC":"1 W","Surge Voltage Resistance Rated Value":"6 kV","at AC in hot operating state per pole":"15.5 W","Number Of Poles For Main Current Circuit":"3","Product Function Short Circuit Protection":"Yes","apparent holding power of magnet coil at AC":"2 VA","protocol is supported AS-Interface protocol":"No","reference code according to IEC 81346-2:2019":"Q","shock resistance according to IEC 60068-2-27":"6g / 11 ms","Type Of Voltage Of The Control Supply Voltage":"AC/DC","at 400 V according to IEC 60947-4-1 rated value":"100 000 A","Inductive Power Factor With The Holding Power Of The Coil":"1","Mechanical Service Life (Operating Cycles) Of Contactor Typical":"10 000 000","Response Value Current Of Instantaneous Short-Circuit Trip Unit":"949 A","insulation voltage with degree of pollution 3 at AC rated value":"690 V","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"62 ... 65 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/86642f54a6bf57b6dc3543b485f3b1da.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=171663&mlfb=3RA2130-4KA38-0NB3"},"ai":{"faq":[{"question":"What compliance documentation does Siemens provide for 3RA2130-4KA38-0NB3?","answer":"The part carries a RoHS substance prohibition date of 03/01/2017, confirming compliance with the EU RoHS directive. REACH, UL, and IEC documentation is standard for the SIRIUS product family but is not itemized in the spec record."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2130-4KA38-0NB3","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/3RA2130-4KA38-0NB3 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}