{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1122-1BC40","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1122-1BC40","canonicalUrl":"https://aoctrl.com/siemens/3RH1122-1BC40","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1122-1BC40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary contactor, size S00, 3RH1122-1BC40, 10 A AC-12 rated, 24 VDC coil 3.2 W, screw and snap-on DIN rail mount, 45 mm width.","salesMarkdown":"## Auxiliary contactor for SIRIUS S00 — 3RH1122-1BC40 It carries a maximum operating current of 10 A at AC-12 duty — that's the resistive load rating for control transformers and indicator lamps, not motor inrush. The DC coil pulls 3.2 W on closing and holds at the same 3.2 W, so the control transformer sizing is straightforward: no inrush spike to derate for. The AC-12 rating of 10 A is the key selection figure — it governs switching of resistive control loads. For inductive loads like contactor coils or solenoid valves, you'd derate per the manufacturer's curve; the listed values at 230 V (6 A) and 400 V (3 A) give a rough guide for mixed-duty circuits. The 24 VDC coil is continuous-rated at 3.2 W, so the power supply must sustain that hold current without droop. Shock resistance at 10g / 5 ms and 5g / 10 ms means it survives shipping and moderate machine vibration, but not hammer-mill duty. Screw and snap-on mounting onto DIN rail. The terminal block accepts solid conductors: 2x 0.5...1.5 mm², 2x 0.75...2.5 mm², or 2x 4 mm².","metaTitle":"Siemens 3RH1122-1BC40 SIRIUS Auxiliary Contactor, 10 A AC-12","metaDescription":"Siemens SIRIUS 3RH1122-1BC40 auxiliary contactor, size S00. 10 A AC-12 rated, 24 VDC coil, 3.2 W hold. Screw/snap-on DIN rail mount. 45 mm wide. 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":"30 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=75002&mlfb=3RH1122-1BC40","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1122-1BC40/alternatives.json"},"ai":{"faq":[{"question":"What is 3RH1122-1BC40's listed depth?","answer":"The depth is 72 mm, with a width of 45 mm and height of 57.5 mm — the standard S00 footprint for DIN-rail mounting."},{"question":"What wire sizes does the 3RH1122-1BC40 accept?","answer":"The screw terminals accept solid conductors: 2x 0.5...1.5 mm², 2x 0.75...2.5 mm², or 2x 4 mm². That covers most control wiring up to 4 mm²."},{"question":"What compliance documentation does Siemens provide for 3RH1122-1BC40?","answer":"The part carries the SIRIUS brand and is designed for IEC/EN 60947-5-1 compliance. Standard documentation includes a CE declaration, RoHS and REACH statements, and the product datasheet. Specific certificates (UL, CSA, EAC) depend on the variant and should be confirmed at order."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1122-1BC40","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/3RH1122-1BC40 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}}