{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1131-2HB40-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1131-2HB40-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RH1131-2HB40-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1131-2HB40-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RH1131-2HB40-ZX95 coupling relay, S00 size, 24 V DC coil, 3 NO instantaneous contacts, 10 A rated current, screw and snap-on mounting.","salesMarkdown":"The Siemens 3RH1131-2HB40-ZX95 is a SIRIUS coupling relay designed for switching auxiliary circuits in control panels. It's the relay you grab when a PLC output needs to drive a contactor coil, or when you need to isolate a low-current signal from a higher-power load. The 24 V DC coil pulls in at 0.7 of rated voltage and holds at 2.3 W — same power closing and holding, so no thermal derating worry on sustained energization. Three NO instantaneous contacts handle the switching, rated 10 A at 24 V, 6 A at 230 V, and 3 A at 400 V. That covers most auxiliary loads — indicator lamps, small contactor coils, solenoid valves — without needing a separate interposing relay. No make-before-break or delayed contacts here; it's straight on/off switching. ## Panel Integration — DIN Rail and Wiring Mounts via screw and snap-on to standard DIN rail. Terminals accept 2x 0.25 to 2.5 mm² solid wire (or 24 to 14 AWG). IP20 on the front keeps fingers out, but it's not sealed; mount inside an enclosure rated for the environment. Shock resistance is 10g for 5 ms and 5g for 10 ms — tough enough for conveyor lines and machine tools.","metaTitle":"Siemens 3RH1131-2HB40-ZX95 SIRIUS Coupling Relay, 24 V DC, 1","metaDescription":"Siemens SIRIUS 3RH1131-2HB40-ZX95 coupling relay for auxiliary circuits. 24 V DC coil, 10 A rated current, 3 NO contacts, S00 size. Current production. DIN rail mount. IP20. RFQ fo","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":"Coupling relay for switching auxiliary circuits","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","protection class IP on the front":"IP20","Product Extension Auxiliary Switch":"No","closing power of magnet coil at DC":"2.3 W","holding power of magnet coil at DC":"2.3 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=361497&mlfb=3RH1131-2HB40-ZX95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1131-2HB40-ZX95/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings for this coupling relay?","answer":"24 V DC coil rated at 2.3 W closing and holding. Three NO instantaneous contacts rated 10 A at 24 V, 6 A at 230 V, 3 A at 400 V. Mechanical life of 30 million operations typical. Contact reliability of 1 failure per 100 million operations at 17 V, 1 mA."},{"question":"What wire sizes does the 3RH1131-2HB40-ZX95 accept?","answer":"Terminals accept 2x 0.25 to 2.5 mm² solid wire, or 2x 24 to 14 AWG."},{"question":"What compliance documentation is available for this part?","answer":"RoHS compliance is confirmed with a substance prohibition date of July 1, 2006. The part carries IP20 front protection and pollution degree 3 rating for industrial environments."},{"question":"Will the 3RH1131-2HB40-ZX95 drop into a panel specified for a 3RT1015 contactor?","answer":"The 3RH1131 is a coupling relay in the S00 frame size, same as the 3RT1015 contactor series. Both use the same DIN rail footprint and terminal spacing, so it will physically fit in the same panel location. However, the 3RH1131 is an auxiliary relay with 3 NO contacts, not a power contactor — verify the load requirements match the 10 A rating before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1131-2HB40-ZX95","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/3RH1131-2HB40-ZX95 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}}