{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1122-1BD40","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1122-1BD40","canonicalUrl":"https://aoctrl.com/siemens/3RH1122-1BD40","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1122-1BD40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary contactor, size S00, 3RH1122-1BD40, 42 V DC coil, 10 A AC-12 rated, 2 NO + 2 NC contacts, screw and snap-on mounting.","salesMarkdown":"Its 42 V DC coil pulls in at the rated voltage and holds at 3.2 W, typical for a 24–48 V DC control bus. The contact block carries 2 normally-open and 2 normally-closed instantaneous contacts, rated 10 A in AC-12 duty (resistive loads at up to 690 V). For DC switching, the 24 V rated current is 10 A, dropping to 1 A at 110 V and 0.27 A at 220 V — a curve that reflects the arc-quenching limits of a 4-contact block. Terminal capacity accepts solid conductors up to 4 mm² or stranded with ferrule, covering typical control wiring from 0.5 to 2.5 mm². Front face is IP20 — safe for finger-probe access inside a closed panel.","metaTitle":"Siemens 3RH1122-1BD40 SIRIUS Auxiliary Contactor, 10A AC-12,","metaDescription":"Siemens 3RH1122-1BD40 SIRIUS auxiliary contactor, size S00. 10A AC-12 rated, 42V DC coil, 2 NO + 2 NC contacts. Screw and snap-on mounting. Current production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"72 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), 2x 4 mm²","Width":"45 mm","Height":"57.5 mm","Maximum":"2 000 m","At The Side":"0 mm","Rated Value":"42 V","On The Front":"IP20","Initial Value":"0.8","Mounting type":"screw and snap-on mounting","During Storage":"-55 ... +80 °C","Leading Contact":"0","lifecycle_stage":"current","Auxiliary switch":"Yes","During Operation":"-25 ... +60 °C","During Transport":"-55 ... +80 °C","Full-scale value":"1.1","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":"Auxiliary contactor","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","Closing power of magnet coil at DC":"3.2 W","Holding power of magnet coil at DC":"3.2 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 (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","at AWG conductors for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","Contact reliability of auxiliary contacts":"1 faulty switching per 100 million (17 V, 1 mA)","For Auxiliary And Control Current Circuit":"screw-type terminals","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","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 10 A","Of The Contactor With Added Electronics-Compatible Auxiliary Switch Block Typical":"5 000 000"}},"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=510741&mlfb=3RH1122-1BD40","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1122-1BD40/alternatives.json"},"ai":{"faq":[{"question":"What is the rated switching current at 24 V DC for 3RH1122-1BD40?","answer":"At 24 V DC the contacts are rated 10 A. At 110 V DC it drops to 1 A, and at 220 V DC to 0.27 A — the DC derating curve is typical for a 4-pole contact block."},{"question":"What are the key ratings and approvals for 3RH1122-1BD40?","answer":"AC-12 maximum operating current is 10 A. Surge voltage resistance is 6 kV. Pollution degree 3. The product is part of the Siemens SIRIUS family and is designed for use in industrial control panels per IEC/EN 60947."},{"question":"Where can I buy 3RH1122-1BD40 and get current pricing?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an inquiry for a firm quote."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1122-1BD40","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/3RH1122-1BD40 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}}