{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2131-2FB40-1AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2131-2FB40-1AA0","canonicalUrl":"https://aoctrl.com/siemens/3RH2131-2FB40-1AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2131-2FB40-1AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary contactor, size S00, 3RH2131-2FB40-1AA0, 24 VDC coil, 3 NO instantaneous contacts, screw and snap-on mounting for 35 mm DIN rail.","salesMarkdown":"The Siemens 3RH2131-2FB40-1AA0 is a SIRIUS auxiliary contactor in size S00, carrying 3 normally open instantaneous contacts and a 24 VDC coil with an integrated diode surge suppressor. Rated operational current varies with voltage: 10 A at 24 V and 230 V, 3 A at 110 V and 400 V, 2 A at 500 V, 1 A at 690 V, 4.7 A at 60 V, 1.2 A at 220 V, 0.5 A at 440 V, and 0.26 A at 600 V. These figures define the contact load capacity across control and auxiliary circuits in different supply regimes. Mechanical endurance: 30 million cycles. Maximum switching frequency at AC: 10,000 1/h. Arcing time: 10 to 15 ms. Closing power of magnet coil at DC: 4 W. The product carries a substance prohibition date of 10/01/2009, indicating RoHS compliance per the original directive. Pollution degree 3 suits industrial environments with conductive or dry non-conductive pollution. ## Panel Fit & Integration Dimensions: 73 mm deep, 45 mm wide, 70 mm high. The 45 mm width occupies one standard 45 mm slot on a DIN rail — important for panel fill-factor planning. The integrated diode surge suppressor on the DC coil eliminates the need for external free-wheeling diode wiring — one less component to install and verify in the panel.","metaTitle":"Siemens 3RH2131-2FB40-1AA0 SIRIUS Auxiliary Contactor, 24 VD","metaDescription":"Siemens SIRIUS auxiliary contactor 3RH2131-2FB40-1AA0, size S00, 24 VDC coil, 3 NO contacts, 45 mm wide. Current production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"73 mm","Width":"45 mm","at AC":"10 000 1/h","at DC":"38 ... 65 ms","title":"3RH2131-2FB40-1AA0","Height":"70 mm","Upwards":"10 mm","Forwards":"10 mm","Downwards":"10 mm","Arcing Time":"10 ... 15 ms","At The Side":"6 mm","Rated Value":"24 V","description":"Contactor relay, 3 NO + 1 NC, 24 V DC, with integrated diode, Size S00, Spring-type terminal upright mounting position","Initial Value":"0.8","During Storage":"-55 ... +80 °C","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm DIN rail","Full-Scale Value":"1.1","Mounting Position":"standing, on horizontal mounting surface","Size Of Contactor":"S00","Solid Or Stranded":"2x (0,5 ... 4 mm²)","Product Brand Name":"SIRIUS","Degree Of Pollution":"3","Product Designation":"Auxiliary contactor","at 24 V rated value":"10 A","at 60 V rated value":"4.7 A","Of Contactor Typical":"30 000 000","at 110 V rated value":"3 A","at 220 V rated value":"1.2 A","at 230 V rated value":"10 A","at 400 V rated value":"3 A","at 440 V rated value":"0.5 A","at 500 V rated value":"2 A","at 600 V rated value":"0.26 A","at 690 V rated value":"1 A","Instantaneous Contact":"3","Relative Humidity Minimum":"10 %","Substance Prohibitance (Date)":"10/01/2009","Design Of The Surge Suppressor":"diode","Product Extension Auxiliary Switch":"Yes","closing power of magnet coil at DC":"4 W","holding power of magnet coil at DC":"4 W","Surge Voltage Resistance Rated Value":"6 kV","operating frequency at DC-12 maximum":"1 000 1/h","operating frequency at DC-13 maximum":"1 000 1/h","operational current at AC-12 maximum":"10 A","for AWG cables for auxiliary contacts":"2x (20 ... 12)","reference code according to IEC 81346-2":"K","Finely Stranded With Core End Processing":"2x (0.5 ... 2.5 mm²)","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","with low demand rate according to SN 31920":"40 %","Finely Stranded Without Core End Processing":"2x (0.5 ... 2.5 mm²)","with high demand rate according to SN 31920":"73 %","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","contact rating of auxiliary contacts according to UL":"A600 / Q600","Identification Number And Letter For Switching Elements":"31 E","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","Type Of Electrical Connection For Auxiliary And Control Circuit":"spring-loaded terminals","insulation voltage with degree of pollution 3 at AC rated value":"690 V","Of The Contactor With Added Electronically Optimized Auxiliary Switch Block Typical":"5 000 000","Design Of The Fuse Link For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 10 A","design of the miniature circuit breaker for short-circuit protection of the auxiliary circuit up to 230 V":"C characteristic: 6 A; 0.4 kA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/01c144ecb54290d222581212bb298ad2.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=646424&mlfb=3RH2131-2FB40-1AA0"},"ai":{"faq":[{"question":"What is the depth of 3RH2131-2FB40-1AA0?","answer":"The depth is 73 mm."},{"question":"What is the width of 3RH2131-2FB40-1AA0?","answer":"The width is 45 mm."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2131-2FB40-1AA0","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/3RH2131-2FB40-1AA0 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}}