{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2122-1KJ80","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2122-1KJ80","canonicalUrl":"https://aoctrl.com/siemens/3RH2122-1KJ80","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2122-1KJ80","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS coupling relay, size S00, 2 NO instantaneous contacts, 72 V DC coil with integrated suppressor diode, screw and snap-on mounting on 35 mm DIN rail.","salesMarkdown":"The Siemens 3RH2122-1KJ80 is a SIRIUS coupling relay designed for switching auxiliary circuits in control panels. It carries two instantaneous normally-open contacts, each rated for 10 A at 24 V and 10 A at 230 V, with a 72 V DC coil that includes an integrated suppressor diode. The coil draws 2.8 W at closing. The 10 A rating at 24 V and at 230 V tells you the contacts handle resistive loads up to that current across a wide voltage range — useful for pilot lamps, solenoid valves, and small contactor coils. At 60 V the rating drops to 4.7 A, at 110 V to 3 A, and at 400 V to 3 A; the curve reflects the AC-1 duty class typical for auxiliary relays. The mechanical life of 30 000 000 operations means this relay is built for high-cycle applications like pick-and-place lines or conveyor interlocks where the contacts cycle many times per shift. The relay measures 45 mm wide, 57.5 mm high, and 73 mm deep — the S00 footprint. Wire connection accepts 2 x (0.5 to 1.5 mm²), 2 x (0.75 to 2.5 mm²), or 2 x 4 mm² solid or stranded conductors.","metaTitle":"Siemens 3RH2122-1KJ80 SIRIUS Coupling Relay, 2 NO Contacts,","metaDescription":"Siemens 3RH2122-1KJ80 SIRIUS coupling relay, size S00, 2 instantaneous NO contacts, 72 V DC coil with suppressor diode. Rated 10 A at 24 V, 10 A at 230 V. Screw and snap-on mountin","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 ... 20 ms","title":"3RH2122-1KJ80","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":"72 V","description":"Coupling contactor relay, 2 NO + 2 NC, DC 72 V, 0.7... 1.25* US, with integrated suppressor diode, Size S00, screw terminal suitable for PLC outputs","Initial Value":"0.7","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":"1.25","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":"Coupling relay for switching auxiliary circuits","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":"suppressor diode","Product Extension Auxiliary Switch":"No","closing power of magnet coil at DC":"2.8 W","holding power of magnet coil at DC":"2.8 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":"22 E","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","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","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/8fae062fe3b09913984392492d6ec2a5.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=503271&mlfb=3RH2122-1KJ80"},"ai":{"faq":[{"question":"What are the key ratings of 3RH2122-1KJ80?","answer":"It has 2 instantaneous NO contacts rated 10 A at 24 V and 10 A at 230 V, with a 72 V DC coil and integrated suppressor diode. Mechanical life is 30 000 000 operations."},{"question":"How do I get pricing and availability for 3RH2122-1KJ80?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What compliance documentation does 3RH2122-1KJ80 have?","answer":"The part carries a RoHS compliance date of 10/01/2009. The SIRIUS series typically meets IEC and UL standards, but specific approvals for this variant should be verified from the manufacturer's documentation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2122-1KJ80","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/3RH2122-1KJ80 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}}