{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1122-1BB40-0TK1-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1122-1BB40-0TK1-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RH1122-1BB40-0TK1-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1122-1BB40-0TK1-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary contactor, size S00, 3RH1122-1BB40-0TK1-ZX95, 24 VDC coil, 10 A at 24 V, screw and snap-on mounting, IP20 front.","salesMarkdown":"It's a control-circuit switching device, not a main power contactor — it handles signal-level loads like PLC inputs, relay coils, and indicator lamps. The 24 VDC coil pulls in at the rated value and holds at 3.2 W, so it's a known load on a 24 VDC power supply. The 10 A rating at 24 V (AC-12 maximum) covers most control-circuit duty. Mounts via screw or snap-on to DIN rail. Zero side clearance needed — you can stack it tight against adjacent devices. ## Wiring and connection specs Terminals accept solid wire: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), and 2x 4 mm². That covers standard control wiring up to 12 AWG. Depth is 72 mm, which is typical for S00 auxiliary contactors — leaves enough room for wiring fingers in a shallow enclosure. ## Switching ratings across voltages The auxiliary contacts are rated for switching at multiple control voltages: 10 A at 24 V, 1 A at 110 V, 0.27 A at 220 V, 6 A at 230 V, 3 A at 400 V, 2 A at 500 V, and 1 A at 690 V. The contactor has 2 instantaneous contacts and no delayed or leading/lagging switching — it's a straightforward on/off auxiliary block.","metaTitle":"Siemens 3RH1122-1BB40-0TK1-ZX95 SIRIUS Auxiliary Contactor,","metaDescription":"Siemens SIRIUS auxiliary contactor 3RH1122-1BB40-0TK1-ZX95, size S00, 24 VDC coil, 10 A rated at 24 V. Current production. Snap-on mounting, IP20 front. Order to RFQ.","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 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=159532&mlfb=3RH1122-1BB40-0TK1-ZX95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1122-1BB40-0TK1-ZX95/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings I need to know for BOM fit?","answer":"The key specs are: 24 VDC coil, 10 A at 24 V (AC-12 max), size S00 form factor, 45 mm wide, screw/snap-on mounting, IP20 front. It's an auxiliary contactor — use it for control circuits, not motor power switching."},{"question":"How does this compare to a 3RT1015 contactor for panel drop-in?","answer":"The 3RT1015 is a main power contactor (motor switching), while this 3RH1122 is an auxiliary contactor (control signaling). They share the S00 footprint, so the 3RH1122 can mount alongside or be ganged with a 3RT1015 on the same DIN rail. But they're not direct substitutes — the 3RH1122 handles lower currents and is meant for auxiliary circuits, not motor loads."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1122-1BB40-0TK1-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/3RH1122-1BB40-0TK1-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}}