{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1122-1BB40-0TK0-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1122-1BB40-0TK0-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RH1122-1BB40-0TK0-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1122-1BB40-0TK0-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RH1122-1BB40-0TK0-ZX95, auxiliary contactor, size S00, 24 VDC coil, 2 NO + 2 NC contacts, AC-12 rated 10 A, screw and snap-on mounting.","salesMarkdown":"The Siemens SIRIUS 3RH1122-1BB40-0TK0-ZX95 is an auxiliary contactor, size S00, with a 24 VDC coil and a contact configuration of 2 normally-open and 2 normally-closed instantaneous contacts. It carries a 10 A rating at AC-12 duty, which means it's suited for switching resistive loads and control circuits in a panel — the AC-12 rating covers the load curve for resistive and solid-state loads, not motor inrush. The coil pulls 3.2 W on both pick-up and hold, so there's no power drop after engagement; the DC holding power matches the closing power, which simplifies thermal budgeting in a crowded DIN-rail enclosure. Mounts via screw or snap-on onto a DIN rail — the 45 mm width and 57.5 mm height fit the standard S00 footprint, so it occupies the same slot as a S00 contactor. Clearance at the side is 0 mm, meaning it can sit flush against adjacent devices without derating for heat buildup at the sides. Wire capacity accepts 2x 0.5 to 1.5 mm², 2x 0.75 to 2.5 mm², or 2x 4 mm² solid, covering most control-circuit wiring gauges without needing ferrules. The auxiliary contacts are rated for AC-12 at 10 A, but the switching capacity drops with voltage: 6 A at 230 V, 3 A at 400 V, 2 A at 500 V, and 1 A at 690 V. For DC switching, the contacts handle 10 A at 24 V, 1 A at 110 V, and 0.27 A at 220 V. Mechanical life is typical 30 million operations, so it'll outlast most contactors it's paired with in cyclic service.","metaTitle":"Siemens 3RH1122-1BB40-0TK0-ZX95 SIRIUS Auxiliary Contactor,","metaDescription":"Siemens SIRIUS 3RH1122-1BB40-0TK0-ZX95 auxiliary contactor, 24 VDC coil, 10 A AC-12 rating, 2 NO + 2 NC contacts, size S00. Current production. 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":"24 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=248256&mlfb=3RH1122-1BB40-0TK0-ZX95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1122-1BB40-0TK0-ZX95/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional alternative to 3RH1122-1BB40-0TK0-ZX95?","answer":"The 3RH2122-1BA40 is a sibling in the same SIRIUS family, but it uses a different coil voltage (not 24 VDC) and has a different contact configuration — 3RH2122-1BA40 carries 2 NO + 2 NC as well, but verify the coil rating and any special suffix features before substituting. The 3RT1015-1BB42 and 3RT1016-1BB42 are power contactors, not auxiliary contactors, so they are not drop-in replacements for the auxiliary switching function."},{"question":"Where can I buy 3RH1122-1BB40-0TK0-ZX95 and how is it quoted?","answer":"This part is sourced to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time on your required quantity."},{"question":"What wire sizes does 3RH1122-1BB40-0TK0-ZX95 accept?","answer":"The terminals accept 2x 0.5 to 1.5 mm² solid, 2x 0.75 to 2.5 mm² solid, or 2x 4 mm² solid. No ferrules required for solid wire."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1122-1BB40-0TK0-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/3RH1122-1BB40-0TK0-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}}