{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1122-2VB40-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1122-2VB40-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RH1122-2VB40-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1122-2VB40-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS coupling relay, 3RH1122-2VB40-ZX95, 24 VDC coil, 10 A rated, size S00, screw and snap-on mounting, IP20 front.","salesMarkdown":"The Siemens 3RH1122-2VB40-ZX95 is a SIRIUS coupling relay designed for switching auxiliary circuits in control panels. Front-side protection is IP20, so it's intended for enclosed panel installation where personnel don't contact live parts. The built-in diode surge suppressor handles the inductive kickback, so you don't need an external flyback diode across the coil — verify polarity matches the diode orientation before wiring. Contact ratings are given per voltage: 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, 2 A at 500 V, and 1 A at 690 V. For a 24 VDC control circuit, the full 10 A is available; at higher AC voltages the current derates due to arc extinction limits. That's a dry-circuit rating — it will switch low-level signals from sensors or PLC outputs without needing a minimum wetting current. The relay measures 45 mm wide, 60 mm high, and 73 mm deep. Shock resistance is 10g for 5 ms and 5g for 10 ms. The screw terminals accept solid or stranded conductors from 0.25 to 2.5 mm² (2 x 2.5 mm² per clamp).","metaTitle":"Siemens 3RH1122-2VB40-ZX95 SIRIUS Coupling Relay, 24 VDC, 10","metaDescription":"Siemens SIRIUS 3RH1122-2VB40-ZX95 coupling relay for auxiliary circuits. 24 VDC coil, 10 A rated current, size S00, IP20 front. Current production. Quoted to order.","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":"0.85","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":"1.85","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":"Coupling relay for switching auxiliary circuits","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)":"07/01/2006","Design Of The Surge Suppressor":"diode","protection class IP on the front":"IP20","Product Extension Auxiliary Switch":"No","closing power of magnet coil at DC":"1.4 W","holding power of magnet coil at DC":"1.4 W","Surge Voltage Resistance Rated Value":"6 kV","operational current at AC-12 maximum":"10 A","for AWG cables for auxiliary contacts":"2x (24 ... 14)","reference code according to IEC 81346-2":"K","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","with low demand rate according to SN 31920":"40 %","Finely Stranded Without Core End Processing":"2x (0.25 ... 2.5 mm²)","Of Auxiliary Contacts Instantaneous Contact":"0","with high demand rate according to SN 31920":"75 %","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","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","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","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=415575&mlfb=3RH1122-2VB40-ZX95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1122-2VB40-ZX95/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings for 3RH1122-2VB40-ZX95?","answer":"24 V DC coil, 10 A rated current at 24 V, size S00, IP20 front, 73 mm depth, screw/snap-on mounting, with built-in diode surge suppression."},{"question":"How do I get pricing and availability for 3RH1122-2VB40-ZX95?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Submit an RFQ for current pricing and availability confirmation."},{"question":"Will 3RH1122-2VB40-ZX95 drop into a panel specified for 3RH2122-1WB40?","answer":"Both are SIRIUS S00 size relays with similar footprint, but the 3RH2122-1WB40 has a different coil voltage and contact configuration. Check the coil rating and contact arrangement against your panel wiring before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1122-2VB40-ZX95","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/3RH1122-2VB40-ZX95 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}}