{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1122-1BB40-0AA6","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1122-1BB40-0AA6","canonicalUrl":"https://aoctrl.com/siemens/3RH1122-1BB40-0AA6","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1122-1BB40-0AA6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RH1122-1BB40-0AA6 auxiliary contactor, 24 VDC coil, 4-pole (2 NO + 2 NC), size S00, screw and snap-on mounting, IP20 front.","salesMarkdown":"The Siemens 3RH1122-1BB40-0AA6 is a SIRIUS auxiliary contactor — a 4-pole switching block (2 NO + 2 NC instantaneous contacts) designed for control-circuit isolation, signal interlocking, and extending the auxiliary contact count on a motor contactor or as a standalone logic element in a panel. It is built to the S00 frame size, the smallest footprint in the SIRIUS contactor family, and is rated for a 24 V DC coil that draws 3.2 W on pickup and 3.2 W holding — a constant-hold coil, so no power savings from a DC economizer, but the steady draw simplifies the control transformer sizing. Terminals accept 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or 2x 4 mm² solid/stranded — the dual-wire entry per clamp is handy for daisy-chaining control voltage to multiple devices without extra terminal blocks. The 24 V DC rated current is 10 A — that's the continuous carry current for the auxiliary contacts at that voltage, not the motor-starting current. For AC loads, the 230 V rating is 6 A and the 400 V rating is 3 A, so it's sized for control transformers, solenoid valves, and contactor coils, not power circuits. At higher DC voltages the current drops sharply: 1 A at 110 V DC, 0.27 A at 220 V DC — the DC arc extinction limits the switching capacity, so if you're breaking a DC solenoid at 220 V, verify the load current is under 0.27 A. RoHS compliance date is July 1, 2006, which covers the EU RoHS directive; the part carries the substance prohibitance marking for that date.","metaTitle":"Siemens 3RH1122-1BB40-0AA6 SIRIUS Auxiliary Contactor, 24 VD","metaDescription":"Siemens SIRIUS 3RH1122-1BB40-0AA6 auxiliary contactor, 24 VDC coil, 4-pole (2 NO + 2 NC), size S00, IP20 front. Active 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","Rated Value":"24 V","Initial Value":"0.8","During Storage":"-55 ... +80 °C","Leading Contact":"0","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","During Transport":"-55 ... +80 °C","Fastening Method":"screw and snap-on mounting","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","Contact Reliability":"one incorrect switching operation of 100 million switching operations (17 V, 1 mA)","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","Substance Prohibitance (Date)":"07/01/2006","protection class IP on the front":"IP20","Product Extension Auxiliary Switch":"Yes","closing power of magnet coil at DC":"3.2 W","holding power of magnet coil at DC":"3.2 W","Surge Voltage Resistance Rated Value":"6 kV","at AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","operational current at AC-12 maximum":"10 A","reference code according to IEC 81346-2":"K","Finely Stranded With Core End Processing":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","Touch Protection Against Electrical Shock":"finger-safe","with low demand rate according to SN 31920":"40 %","Of Auxiliary Contacts Instantaneous Contact":"0","with high demand rate according to SN 31920":"75 %","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","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Required Spacing With Side-By-Side Mounting At The Side":"0 mm","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","Type Of Electrical Connection For Auxiliary And Control Circuit":"screw-type terminals","insulation voltage with degree of pollution 3 at AC rated value":"690 V","Of The Contactor With Added Electronically Optimized Auxiliary Switch Block Typical":"5 000 000","Design Of The Fuse Link For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 10 A"}},"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=110000&mlfb=3RH1122-1BB40-0AA6","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1122-1BB40-0AA6/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings I need to check for fit?","answer":"The coil is 24 V DC, 3.2 W. Contacts are 2 NO + 2 instantaneous. At 24 V DC the rated current is 10 A; at 230 V AC it's 6 A. The frame size is S00, width 45 mm, depth 72 mm."},{"question":"How does this compare to the 3RT1015-1BB42 contactor?","answer":"The 3RT1015-1BB42 is a main power contactor (motor switching), while the 3RH1122-1BB40-0AA6 is an auxiliary contactor for control circuits. They share the S00 frame size and 24 V DC coil voltage, so they mount on the same DIN rail and can be mechanically interlocked. But the 3RT1015 carries motor-rated AC-3 currents; the 3RH1122 is limited to auxiliary switching loads. They are not direct substitutes — one is for power, the other for control logic."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1122-1BB40-0AA6","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/3RH1122-1BB40-0AA6 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}}