{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1131-2KB40-2AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1131-2KB40-2AA0","canonicalUrl":"https://aoctrl.com/siemens/3RH1131-2KB40-2AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1131-2KB40-2AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary contactor, 3RH1131-2KB40-2AA0, 24 V DC coil, 3 instantaneous NO contacts, size S00, IP20 front, screw and snap-on mounting.","salesMarkdown":"It carries three instantaneous normally-open contacts, each rated for 10 A at 24 V, 6 A at 230 V, and 1 A at 690 V, so it handles everything from a PLC input to a small contactor coil. It mounts on a DIN rail or with screws, and the size S00 footprint (45 mm wide, 60 mm tall, 73 mm deep) fits the standard SIRIUS contactor grid — same panel cutout as a 3RT10 contactor. The 24 V DC coil is the standard control voltage for most industrial PLCs and safety relays — no extra power supply needed if your cabinet already runs 24 VDC. The 3 NO contacts are instantaneous (no make-before-break or delayed action), so they switch at the same moment the coil picks up, which matters when you need simultaneous signal feedback or interlocks. The contact reliability spec — one incorrect switching operation per 100 million at 17 V, 1 mA — means these contacts are reliable even at dry-circuit levels, so they can switch PLC inputs without gold-plating. Pollution degree 3 is typical for industrial control panels.","metaTitle":"Siemens 3RH1131-2KB40-2AA0 SIRIUS Auxiliary Contactor, 24 V","metaDescription":"Siemens SIRIUS 3RH1131-2KB40-2AA0 auxiliary contactor, 24 V DC coil, 3 NO contacts, size S00, IP20, screw/snap-on mounting. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"73 mm","Solid":"2x (0.25 ... 2.5 mm²)","Width":"45 mm","Height":"60 mm","Rated Value":"24 V","Initial Value":"0.7","During Storage":"-55 ... +80 °C","Leading Contact":"0","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","During Transport":"-55 ... +80 °C","Fastening Method":"screw and snap-on mounting","Full-Scale Value":"1.25","Shock Resistance":"10g / 5 ms and 5g / 10 ms","Delayed Switching":"0","Lagging Switching":"0","Mounting Position":"+/-180° rotation possible on vertical mounting surface; can be tilted forward and backward by +/- 22.5° on vertical mounting surface","Size Of Contactor":"S00","Product Brand Name":"SIRIUS","Contact Reliability":"one incorrect switching operation of 100 million switching operations (17 V, 1 mA)","Degree Of Pollution":"3","Product Designation":"Auxiliary contactor","at 24 V rated value":"10 A","Of Contactor Typical":"30 000 000","at 110 V rated value":"1 A","at 220 V rated value":"0.27 A","at 230 V rated value":"6 A","at 400 V rated value":"3 A","at 500 V rated value":"2 A","at 690 V rated value":"1 A","Instantaneous Contact":"3","For Auxiliary Contacts":"0","Make-Before-Break Switching":"0","Substance Prohibitance (Date)":"07/01/2006","Design Of The Surge Suppressor":"with varistor","protection class IP on the front":"IP20","Product Extension Auxiliary Switch":"No","closing power of magnet coil at DC":"11 W","holding power of magnet coil at DC":"4 W","Surge Voltage Resistance Rated Value":"6 kV","at AWG cables for auxiliary contacts":"2x (24 ... 14)","operational current at AC-12 maximum":"10 A","reference code according to IEC 81346-2":"K","Finely Stranded With Core End Processing":"2x (0.25 ... 1.5 mm²)","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","Touch Protection Against Electrical Shock":"finger-safe","with low demand rate according to SN 31920":"40 %","Finely Stranded Without Core End Processing":"2x (0.25 ... 2.5 mm²)","Of Auxiliary Contacts Instantaneous Contact":"0","with high demand rate according to SN 31920":"75 %","number of NC contacts for auxiliary contacts":"1","number of NO contacts for auxiliary contacts":"3","Type Of Voltage Of The Control Supply Voltage":"DC","Identification Number And Letter For Switching Elements":"31 E","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Required Spacing With Side-By-Side Mounting At The Side":"0 mm","Type Of Electrical Connection For Auxiliary And Control Circuit":"Cage Clamp terminals","insulation voltage with degree of pollution 3 at AC rated value":"690 V","Design Of The Fuse Link For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 10 A"}},"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=128729&mlfb=3RH1131-2KB40-2AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1131-2KB40-2AA0/alternatives.json"},"ai":{"faq":[{"question":"Will this part fit in a panel designed for a 3RT10 contactor?","answer":"Yes — the size S00 footprint (45 mm wide, 60 mm tall, 73 mm deep) is the same as the 3RT10 contactor series. It mounts on DIN rail or with screws, and the mounting position can be rotated or tilted for tight layouts."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1131-2KB40-2AA0","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/3RH1131-2KB40-2AA0 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}}