{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1122-2UB40","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1122-2UB40","canonicalUrl":"https://aoctrl.com/siemens/3RH1122-2UB40","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1122-2UB40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary contactor, size S00, 24 V DC coil, 2 N/O + 2 N/C contacts, screw/snap-on mounting, IP20 front, 73 mm depth.","salesMarkdown":"The Siemens 3RH1122-2UB40 is a SIRIUS auxiliary contactor in size S00 — a compact 45 mm wide block that snaps onto DIN rail and wires up clean with screw terminals accepting 0.25 to 2.5 mm² solid or stranded. The 24 V DC coil pulls 3.2 W to close and holds at the same power, so no extra heat sink in a crowded panel. Rated for 10 A at 24 V (resistive), 6 A at 230 V, and 3 A at 400 V — these are the switching ratings that decide whether it handles your control or small motor circuit. The IP20 front protection keeps fingers out but expects the panel to provide the rest of the ingress protection. Shock resistance is 10g for 5 ms and 5g for 10 ms — fine for machine-mounted contactors near presses or conveyors as long as they aren't directly on a hammering die. Fastening method is screw and snap-on mounting — the 45 mm width clips onto standard DIN rail without tools. Depth is 73 mm, height 60 mm — leaves room in a 200 mm deep cabinet for wiring gutters.","metaTitle":"Siemens 3RH1122-2UB40 SIRIUS Auxiliary Contactor, 24 V DC, 1","metaDescription":"Siemens 3RH1122-2UB40 SIRIUS auxiliary contactor, 24 V DC coil, rated 10 A at 24 V, size S00, IP20, snap-on DIN rail. Active production. 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":"0.8","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":"1.1","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)":"01.07.2006 00:00:00","Design Of The Surge Suppressor":"with varistor","protection class IP on the front":"IP20","Product Extension Auxiliary Switch":"Yes","closing power of magnet coil at DC":"3.2 W","holding power of magnet coil at DC":"3.2 W","reference code acc. to IEC 81346-2":"K","Surge Voltage Resistance Rated Value":"6 kV","at AWG cables for auxiliary contacts":"2x (24 ... 14)","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 (0.25 ... 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","Finely Stranded Without Core End Processing":"2x (0.25 ... 2.5 mm²)","Of Auxiliary Contacts Instantaneous Contact":"0","number of NC contacts for auxiliary contacts":"2","number of NO contacts for auxiliary contacts":"2","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":"22 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=6162&mlfb=3RH1122-2UB40","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1122-2UB40/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings of the 3RH1122-2UB40?","answer":"24 V DC coil, 3.2 W holding power, rated 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, 2 A at 500 V, 1 A at 690 V. Mechanical life 30 million operations, contact reliability 1 failure per 100 million at 17 V, 1 mA. Size S00, 45 mm wide, IP20 front."},{"question":"Where can I buy the 3RH1122-2UB40?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1122-2UB40","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/3RH1122-2UB40 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}}