{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2122-1BB40-1AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2122-1BB40-1AA0","canonicalUrl":"https://aoctrl.com/siemens/3RH2122-1BB40-1AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2122-1BB40-1AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RH2122-1BB40-1AA0 auxiliary contactor, Size S00, 24 V DC coil, 10 A rated operational current, 2 instantaneous contacts, screw and snap-on DIN rail mounting.","salesMarkdown":"## SIRIUS auxiliary contactor, Size S00, 24 V DC coil The Siemens 3RH2122-1BB40-1AA0 is a SIRIUS auxiliary contactor in the compact Size S00 footprint, designed for switching control circuits and signaling loads in industrial panels. The 2 instantaneous contacts handle auxiliary switching tasks such as interlocking, status feedback, or extending the contactor's own signal count via the auxiliary switch extension capability. ## Switching performance and environmental limits Rated switching frequency is 10,000 operating cycles per hour at AC, with arcing time between 10 and 15 ms and a DC switching delay of 7 to 13 ms — figures that matter when coordinating with fast PLC scan cycles or safety circuits. ## Lifecycle and sourcing — active production, quoted to order RoHS compliance is documented with a substance prohibitance date of October 1, 2009, covering the EU RoHS directive scope. Sourced through authorized distribution channels; volume pricing and lead time are confirmed at RFQ against your BOM quantity.","metaTitle":"Siemens 3RH2122-1BB40-1AA0 SIRIUS Auxiliary Contactor","metaDescription":"Siemens 3RH2122-1BB40-1AA0 SIRIUS auxiliary contactor, Size S00, 24 V DC coil, 10 A rated current, 2 instantaneous contacts. Active production, sourced to","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":"7 ... 13 ms","title":"3RH2122-1BB40-1AA0","Height":"57.5 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, 2 NO + 2 NC, 24 V DC, Size S00, screw 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 standard mounting rail","Full-Scale Value":"1.1","Mounting Position":"standing, on horizontal mounting surface","Size Of Contactor":"S00","Solid Or Stranded":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), 2x 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":"2","Relative Humidity Minimum":"10 %","Substance Prohibitance (Date)":"10/01/2009","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","at AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 2x 12","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","reference code according to IEC 81346-2":"K","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)","with low demand rate according to SN 31920":"40 %","with high demand rate according to SN 31920":"73 %","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","contact rating of auxiliary contacts according to UL":"A600 / Q600","Identification Number And Letter For Switching Elements":"21","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":"screw-type 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/18957cddbbe0e59a412d9a4c991e3ef8.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=440836&mlfb=3RH2122-1BB40-1AA0"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2122-1BB40-1AA0","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/3RH2122-1BB40-1AA0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:47:38.189Z","lastPublished":"2026-07-22T19:47:38.189Z","indexable":true}}