{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1131-1JB40","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1131-1JB40","canonicalUrl":"https://aoctrl.com/siemens/3RH1131-1JB40","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1131-1JB40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS coupling relay, 3RH1131-1JB40, 24 V DC, 3 NO contacts, 10 A rated, Size S00, screw and snap-on mounting, IP20 front.","salesMarkdown":"The Siemens SIRIUS 3RH1131-1JB40 is a coupling relay for switching auxiliary circuits — a 24 V DC coil drives three normally-open (3 NO) instantaneous contacts rated 10 A at 24 V. The Size S00 footprint (45 mm wide, 57.5 mm tall, 72 mm deep) fits the standard SIRIUS contactor relay family, mounting by screw or snap-on onto DIN rail. Coil hold power is 2.3 W DC, with an integrated diode surge suppressor across the coil — no external flyback diode needed for DC switching. The 10 A at 24 V rating defines the maximum continuous thermal current for the auxiliary contacts at the coil voltage — this is the figure to check against the load current of pilot lights, PLC inputs, or small contactor coils the relay will switch. The 3 NO instantaneous contacts switch without delay; there are no delayed, lagging, or make-before-break contacts on this variant. The leading contact count is zero, meaning all three contacts close simultaneously within the contactor's mechanical tolerance. Terminals accept solid conductors: 2x 0.5…1.5 mm², 2x 0.75…2.5 mm², or 2x 4 mm² — sufficient for standard control wiring in panels. The front protection class is IP20, which is typical for enclosed panel-mount devices; no IP rating for the housing sides is stated, so the relay relies on the enclosure for environmental protection. Mount the 3RH1131-1JB40 on DIN rail using the integrated snap-on feature, or secure it with screws through the mounting slots. The Size S00 profile (45 mm wide) matches the footprint of SIRIUS contactors like the 3RT201 or 3RT202 series, so the coupling relay can be ganged directly alongside or stacked with a contactor on the same DIN rail without losing alignment. Shock resistance is 10g for 5 ms and 5g for 10 ms — sufficient for most industrial panel applications, but not rated for extreme vibration environments such as direct engine mounting without additional damping. RoHS compliance date is stated as 1 July 2006, confirming the relay meets the original RoHS directive.","metaTitle":"Siemens 3RH1131-1JB40 SIRIUS Coupling Relay, 24 V DC, 3 NO,","metaDescription":"Siemens SIRIUS 3RH1131-1JB40 coupling relay, 24 V DC coil, 3 NO contacts rated 10 A. Size S00, screw/snap-on mount, IP20 front. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"72 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), 2x 4 mm²","Width":"45 mm","Height":"57.5 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)":"01.07.2006 00:00:00","Design Of The Surge Suppressor":"with diode","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","reference code acc. to IEC 81346-2":"K","Surge Voltage Resistance Rated Value":"6 kV","at AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","operational current at AC-12 maximum":"10 A","with low demand rate acc. to SN 31920":"40 %","with high demand rate acc. to SN 31920":"75 %","Finely Stranded With Core End Processing":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","Touch Protection Against Electrical Shock":"finger-safe","Of Auxiliary Contacts Instantaneous Contact":"0","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","B10 value with high demand rate acc. to SN 31920":"1 000 000; With 0.3 x Ie","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":"screw-type 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=69375&mlfb=3RH1131-1JB40","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1131-1JB40/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings of 3RH1131-1JB40?","answer":"24 V DC coil, 3 NO contacts rated 10 A at 24 V. Size S00, 45 mm wide, screw/snap-on DIN rail mount, IP20 front protection."},{"question":"Where can I buy 3RH1131-1JB40?","answer":"This part is sourced and quoted to order against an RFQ through independent industrial distribution channels. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm offer."},{"question":"Will 3RH1131-1JB40 drop into a panel specified for 3RH2122-1WB40?","answer":"Both are Size S00 SIRIUS coupling relays with the same 45 mm width and snap-on DIN rail mounting, so the mechanical fit is identical. The 3RH2122-1WB40 uses a different coil voltage and contact configuration — verify those match your circuit before swapping."},{"question":"What compliance documentation is available for 3RH1131-1JB40?","answer":"RoHS compliance is confirmed per the 1 July 2006 date code. The relay carries the Siemens SIRIUS brand and is designed to IEC 60947 standards. For specific UL, CSA, or CE certificates, request the manufacturer declaration with your RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1131-1JB40","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/3RH1131-1JB40 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}}