{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1122-2JB40-0LA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1122-2JB40-0LA0","canonicalUrl":"https://aoctrl.com/siemens/3RH1122-2JB40-0LA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1122-2JB40-0LA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary contactor, 3RH1122-2JB40-0LA0, Size S00, 24 VDC coil, 4-pole (2 NO + 2 NC), screw and snap-on mounting, IP20 front.","salesMarkdown":"The Siemens 3RH1122-2JB40-0LA0 is a SIRIUS auxiliary contactor in the Size S00 frame, designed for switching control and signaling circuits rather than motor loads directly. It carries a 24 V DC coil with a built-in diode surge suppressor, and its contact arrangement is 2 normally-open plus 2 normally-closed instantaneous contacts. Rated operational currents vary by voltage and duty: 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, 2 A at 500 V, and 1 A at 690 V — these are the values to use when sizing for your specific control voltage. The coil draws 11 W on pickup and holds at 4 W. The 45 mm width and 60 mm height are standard for the S00 frame; depth is 73 mm including terminals. Terminals accept solid or stranded wire from 0.25 to 2.5 mm² (2 conductors per clamp). The front face carries an IP20 protection class, meaning finger-safe but not washdown-rated — keep it inside the enclosure. Shock resistance is 10g / 5 ms and 5g / 10 ms. Contact reliability is rated at one incorrect switching operation per 100 million cycles at 17 V, 1 mA — useful for low-signal applications. RoHS compliance date is July 1, 2006. Surge voltage resistance is rated at 6 kV.","metaTitle":"Siemens 3RH1122-2JB40-0LA0 SIRIUS Auxiliary Contactor, 24 VD","metaDescription":"Siemens 3RH1122-2JB40-0LA0 SIRIUS auxiliary contactor, 24 VDC coil, Size S00, 4-pole, screw/snap-on mount, IP20 front. Sourced to order against RFQ.","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":"-40 ... +70 °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":"2","For Auxiliary Contacts":"0","Make-Before-Break Switching":"0","Substance Prohibitance (Date)":"07/01/2006","Design Of The Surge Suppressor":"diode","protection class IP on the front":"IP20","Product Extension Auxiliary Switch":"Yes","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","operational current at AC-12 maximum":"10 A","for AWG cables for auxiliary contacts":"2x (24 ... 14)","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":"2","Type Of Voltage Of The Control Supply Voltage":"DC","Identification Number And Letter For Switching Elements":"21 E","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Required Spacing With Side-By-Side Mounting At The Side":"0 mm","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","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","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"}},"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=145537&mlfb=3RH1122-2JB40-0LA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1122-2JB40-0LA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RH1122-2JB40-0LA0 and how do I get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Submit an RFQ for current availability and pricing — confirmed at quote time."},{"question":"What is the closest functional alternative to 3RH1122-2JB40-0LA0?","answer":"The 3RH2122-1BA40 is a similar SIRIUS auxiliary contactor in the same S00 frame, but it uses an AC coil rather than the 24 VDC coil of the 3RH1122-2JB40-0LA0. The DC coil version includes a built-in diode suppressor; the AC version does not. Panel footprint and terminal layout are the same, so it drops in without rewiring if the coil voltage and type match your circuit."},{"question":"What is the depth of 3RH1122-2JB40-0LA0?","answer":"The depth is 73 mm, with a width of 45 mm and height of 60 mm — standard S00 frame dimensions."},{"question":"What wire sizes does 3RH1122-2JB40-0LA0 accept?","answer":"Each terminal accepts 2 conductors of solid or stranded wire from 0.25 to 2.5 mm²."},{"question":"Will 3RH1122-2JB40-0LA0 drop into a panel specified for 3RH2122-1BA40?","answer":"Yes, the physical footprint and mounting are identical — same S00 frame, same 45 mm width, same DIN-rail snap-on. The difference is the coil: the 3RH1122-2JB40-0LA0 is 24 VDC with a built-in diode suppressor, while the 3RH2122-1BA40 is an AC coil. If your control circuit is 24 VDC, this is a direct mechanical replacement."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1122-2JB40-0LA0","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/3RH1122-2JB40-0LA0 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}}