{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1122-2JC40","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1122-2JC40","canonicalUrl":"https://aoctrl.com/siemens/3RH1122-2JC40","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1122-2JC40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS coupling relay, 3RH1122-2JC40, Size S00, 2 NO + 2 NC, 10 A AC-12, screw and snap-on mounting, 73 mm depth.","salesMarkdown":"The Siemens 3RH1122-2JC40 is a SIRIUS coupling relay — a Size S00 contactor-form relay designed for switching auxiliary circuits, not motor loads. Its job is to pass control signals (pilot devices, PLC outputs, safety circuit commands) to the coil of a larger contactor or to a load in a 24–690 VAC control scheme. That matters when you're squeezing it into a crowded panel alongside the main contactor it drives. The relay carries 2 normally-open and 2 normally-closed instantaneous contacts. The headline rating is 10 A at AC-12 — that's the resistive-load switching capacity at 24 V. But the real-world switching capability depends on the voltage you're working at: 6 A at 230 V, 3 A at 400 V, 2 A at 500 V, and 1 A at 690 V (–). At 110 V it's 1 A; at 220 V, 0.27 A. These are the AC-15/DC-13 style ratings for inductive loads — the numbers that govern whether the relay holds up switching a contactor coil or a solenoid valve. The coil itself is DC-operated with an integrated diode surge suppressor. Closing and holding power are both 2.3 W DC — a steady-state draw that stays constant, so no inrush spike to budget for in your 24 VDC supply. The coil holds at 24 V nominal; the operating range covers -25 to +60 °C ambient. The screw terminals accept 2x (0.25 to 2.5 mm²) solid or stranded wire. Front protection is IP20; side clearances are 0 mm, meaning you can butt it against adjacent devices without derating. Shock resistance is 10g / 5 ms and 5g / 10 ms.","metaTitle":"Siemens 3RH1122-2JC40 SIRIUS Coupling Relay, 2 NO + 2 NC, 10","metaDescription":"Siemens SIRIUS 3RH1122-2JC40 coupling relay for switching auxiliary circuits. Size S00, 2 NO + 2 NC contacts, 10 A at AC-12. Screw/snap-on mount, 73 mm depth. Current production. Q","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","Maximum":"2 000 m","At The Side":"0 mm","Rated Value":"30 V","On The Front":"IP20","Initial Value":"0.7","Mounting type":"screw and snap-on mounting","During Storage":"-55 ... +80 °C","Leading Contact":"0","lifecycle_stage":"current","Auxiliary switch":"No","During Operation":"-25 ... +60 °C","During Transport":"-55 ... +80 °C","Full-scale value":"1.25","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","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","Design of the surge suppressor":"with diode","Closing power of magnet coil at DC":"2.3 W","Holding power of magnet coil at DC":"2.3 W","Operating current at AC-12 maximum":"10 A","Surge voltage resistance rated value":"6 kV","Reference code acc. to DIN EN 61346-2":"K","Reference code acc. to DIN EN 81346-2":"K","with low demand rate acc. to SN 31920":"40 %","with high demand rate acc. to SN 31920":"75 %","Finely Stranded With Core End Processing":"2x (0.25 ... 1.5 mm²)","at AWG conductors for auxiliary contacts":"2x (24 ... 14)","Contact reliability of auxiliary contacts":"1 faulty switching per 100 million (17 V, 1 mA)","For Auxiliary And Control Current Circuit":"Cage Clamp terminals","Finely Stranded Without Core End Processing":"2x (0.25 ... 2.5 mm²)","Of Auxiliary Contacts Instantaneous Contact":"0","Number of NC contacts for auxiliary contacts":"2","Number of NO contacts for auxiliary contacts":"2","with degree of pollution 3 at AC rated value":"690 V","Type of voltage of the control supply voltage":"DC","Identification number and letter for switching elements":"22 E","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=364365&mlfb=3RH1122-2JC40","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1122-2JC40/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3RH1122-2JC40?","answer":"Submit an RFQ through this listing. Pricing and stock are confirmed at quote time through independent distribution channels."},{"question":"What is 3RH1122-2JC40's listed depth?","answer":"The depth is 73 mm. Combined with the 45 mm width and 60 mm height, it fits the standard S00 contactor footprint."},{"question":"What wire sizes does the 3RH1122-2JC40 accept?","answer":"The screw terminals accept 2x (0.25 to 2.5 mm²) solid or stranded conductors."},{"question":"Will 3RH1122-2JC40 drop into a panel specified around 3RH2122-1WB40 without rewiring?","answer":"Both are Size S00 SIRIUS coupling relays with the same 45 mm width and screw/snap-on mounting, so the mechanical fit and DIN-rail footprint are identical. The 3RH1122-2JC40 carries 2 NO + 2 NC instantaneous contacts; verify the contact configuration matches your circuit before swapping, as the 3RH2122 series may differ in contact arrangement or integrated surge suppression."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1122-2JC40","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/3RH1122-2JC40 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}}