{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2422-1XF40-0LA2","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2422-1XF40-0LA2","canonicalUrl":"https://aoctrl.com/siemens/3RH2422-1XF40-0LA2","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2422-1XF40-0LA2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS contactor relay, size S00, 2 instantaneous contacts, 72-125 VDC coil with varistor, screw and snap-on mounting on 35 mm DIN rail, for railway applications.","salesMarkdown":"## Mounting and clearances for panel integration Fastens via screw or snap-on onto 35 mm DIN rail per EN 60715, size S00 footprint — 90 mm wide, 58 mm tall, 73 mm deep. The depth number (73 mm) is the dimension from the DIN-rail face to the furthest projection; verify it clears your enclosure door or busbar shroud. That covers most cabinet layouts without derating, but the arcing time of 10-15 ms and DC switching times of 25-45 ms assume free air circulation around the arc chamber. ## Contact ratings across the voltage range The contacts are rated for switching at multiple voltage levels: 10 A at 24 V and 230 V, 4.7 A at 60 V, 3 A at 110 V and 400 V, 2 A at 500 V, 1.2 A at 220 V, 1 A at 690 V, 0.5 A at 440 V, and 0.26 A at 600 V. These are the maximum continuous currents at each voltage — the limiting factor is arc extinction, not thermal rise, so stay within the listed value for the voltage you're switching.","metaTitle":"Siemens 3RH2422-1XF40-0LA2 SIRIUS Contactor Relay, 72-125 VD","metaDescription":"Siemens SIRIUS 3RH2422-1XF40-0LA2 contactor relay for railway applications. Rated 72-125 VDC coil, 2 instantaneous contacts, varistor suppression. Screw/snap-on 35 mm DIN rail. Act","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"73 mm","Width":"90 mm","at DC":"25 ... 45 ms","title":"3RH2422-1XF40-0LA2","Height":"58 mm","Upwards":"10 mm","Forwards":"10 mm","Downwards":"10 mm","Arcing Time":"10 ... 15 ms","At The Side":"6 mm","Rated Value":"72 ... 125 V","description":"Contactor relay latched railway, 2 NO + 2 NC, 72..125 V DC, 0.7... 1.25* Us, with integr. varistor, Size S00, screw terminal Suitable for PLC outputs","Initial Value":"0.7","During Storage":"-55 ... +80 °C","lifecycle_stage":"current","During Operation":"-40 ... +70 °C","Fastening Method":"screw and snap-on mounting onto 35 mm DIN 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, 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","Inrush Current Peak":"1.1 A","Product Designation":"Contactor relay for railway applications","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","Side-By-Side Mounting":"Yes","Locked-Rotor Current Peak":"0.04 A","Relative Humidity Minimum":"10 %","Holding Current Mean Value":"7 mA","Substance Prohibitance (Date)":"10/01/2009","Design Of The Surge Suppressor":"Varistor","Duration Of Inrush Current Peak":"50 µs","Locked-Rotor Current Mean Value":"0.04 A","Duration Of Locked-Rotor Current":"250 ms","Product Extension Auxiliary Switch":"Yes","closing power of magnet coil at DC":"4.5 W","holding power of magnet coil at DC":"0.75 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":"31 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","AWG number as coded connectable conductor cross section for auxiliary contacts":"20 ... 12","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","residual current of the electronics for control with signal <0> at DC at 24 V maximum permissible":"10 mA","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/5d2caaaf3af2c6fe1090db61d462149c.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1029400&mlfb=3RH2422-1XF40-0LA2"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3RH2422-1XF40-0LA2?","answer":"Sourced and quoted to order against an RFQ through independent distribution; availability and current pricing are confirmed at quote time."},{"question":"Will 3RH2422-1XF40-0LA2 drop into a panel specified around 3RH2122-1BW40 without rewiring?","answer":"Both are SIRIUS size S00 contactor relays on the same 35 mm DIN-rail footprint, so the mechanical fit and terminal layout are identical — no rewiring needed for the mounting or wire terminations. The difference is the coil voltage: 3RH2422-1XF40-0LA2 is 72-125 VDC, while the 3RH2122 variants are typically lower DC voltages; verify the coil supply matches before swapping."},{"question":"What compliance documentation does this brand provide for 3RH2422-1XF40-0LA2?","answer":"RoHS compliance is confirmed per the substance prohibition date of 10/01/2009. The SIRIUS series carries CE marking and typically supports UL/CSA certification per the manufacturer's declaration — request the specific declaration of conformity for your project's jurisdiction."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2422-1XF40-0LA2","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/3RH2422-1XF40-0LA2 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}}