{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2122-1UB40-0KV0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2122-1UB40-0KV0","canonicalUrl":"https://aoctrl.com/siemens/3RH2122-1UB40-0KV0","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2122-1UB40-0KV0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary contactor, 3RH2122-1UB40-0KV0, 24 VDC coil, 2 NO instantaneous contacts, 10 A rated switching current, screw and snap-on 35 mm DIN rail mounting, size S00.","salesMarkdown":"## SIRIUS auxiliary contactor, 24 VDC coil, 2 NO contacts The 3RH2122-1UB40-0KV0: It's built on the size S00 contactor frame, which is the compact footprint in the SIRIUS family for auxiliary switching up to 10 A. ## DIN rail mount, 73 mm depth, size S00 Clearance requirements: 10 mm upward, forward, and downward; 6 mm at the sides. ## Built-in varistor, 30 million mechanical cycles The surge suppressor is integrated as a varistor across the coil, which absorbs the inductive kickback from the 24 V DC coil. Coil closing power at DC is 4 W. The contactor is rated for 30 million mechanical operations typical, with pollution degree 3 for industrial environments. Relative humidity minimum 10%. Substance prohibitance date 10/01/2009 aligns with RoHS compliance. The product extension for auxiliary switches is supported.","metaTitle":"Siemens 3RH2122-1UB40-0KV0 SIRIUS Auxiliary Contactor","metaDescription":"Siemens 3RH2122-1UB40-0KV0 SIRIUS auxiliary contactor, 24 VDC coil, 2 NO contacts, 10 A rated switching current, screw and snap-on DIN rail mounting.","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":"3RH2122-1UB40-0KV0","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, integrated varistor Size S00, screw terminal Package label according to VW equipment regulation","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":"+/-180° rotation possible on vertical mounting surface; can be tilted forward and backward by +/- 22.5° on vertical 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","Design Of The Surge Suppressor":"with varistor","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 ... 16), 2x (18 ... 14), 2x 12","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":"22 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":"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/55c5ce2a35ad143c4de74c8801235881.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=643515&mlfb=3RH2122-1UB40-0KV0"},"ai":{"faq":[{"question":"How do I get pricing and availability for 3RH2122-1UB40-0KV0?","answer":"Submit a request with your BOM quantity for current pricing and lead time confirmation."},{"question":"What is the switching capacity at different voltages?","answer":"At 400 V it's 3 A, at 500 V it's 2 A, at 690 V it's 1 A."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2122-1UB40-0KV0","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/3RH2122-1UB40-0KV0 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}}