{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1122-1BN40","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1122-1BN40","canonicalUrl":"https://aoctrl.com/siemens/3RH1122-1BN40","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1122-1BN40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary contactor, size S00, 3RH1122-1BN40, 2 NO instantaneous contacts, 10 A AC-12 rated, screw and snap-on mounting.","salesMarkdown":"It provides 2 normally open (NO) instantaneous contacts and no normally closed (NC) contacts, rated at 10 A in AC-12 duty (resistive control loads at 24 V). For inductive loads, the switching capacity drops: at 230 V it's rated 6 A, at 400 V it's 3 A, and at 690 V it's 1 A. The 2 NO contact configuration (with 0 NC) means this unit is a straight make-only block; if your circuit needs a break contact, you'd need a different variant or an add-on block. The coil closing and holding power is 3.2 W DC, a low draw that keeps the control transformer sizing tight. This auxiliary contactor is sized for the S00 frame, which means it occupies a 45 mm wide DIN-rail footprint with a depth of 72 mm and height of 57.5 mm. The screw and snap-on mounting lets you clip it directly onto the DIN rail without tools, or screw-fix it for vibration-prone locations. Side clearance of 0 mm means you can gang it next to other devices without spacing. The screw terminals accept solid conductors: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or 2x 4 mm². This covers most control wiring from signal-level to power-limited circuits.","metaTitle":"Siemens 3RH1122-1BN40 SIRIUS Auxiliary Contactor, 10 A AC-12","metaDescription":"Siemens SIRIUS 3RH1122-1BN40 auxiliary contactor, size S00. Rated 10 A AC-12, 2 NO contacts, 6 kV surge. Current production. Screw/snap-on mount. Sourced 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":"250 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 Degree Of Pollution 3 Rated Value":"690 V","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","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=536514&mlfb=3RH1122-1BN40","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1122-1BN40/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings for this auxiliary contactor?","answer":"It has 2 NO contacts rated 10 A in AC-12 duty, with a surge voltage resistance of 6 kV. The coil consumes 3.2 W DC. Operating temperature range is -25 to +60 °C."},{"question":"What wire sizes does the terminal accept?","answer":"The screw terminals accept solid conductors: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or 2x 4 mm²."},{"question":"What are the physical dimensions?","answer":"Width is 45 mm, height is 57.5 mm, and depth is 72 mm. It mounts on a DIN rail with 0 mm side clearance."},{"question":"Can this be mounted in any orientation?","answer":"Yes, it allows +/-180° rotation on a vertical mounting surface and can be tilted forward/backward by +/-22.5°."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1122-1BN40","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/3RH1122-1BN40 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}}