{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2122-2BB40-ZW96","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2122-2BB40-ZW96","canonicalUrl":"https://aoctrl.com/siemens/3RH2122-2BB40-ZW96","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2122-2BB40-ZW96","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RH2122-2BB40-ZW96, Size S00 auxiliary contactor, 24 VDC coil, 2 NO instantaneous contacts, screw and snap-on mounting for 35 mm DIN rail.","salesMarkdown":"It carries two normally-open instantaneous contacts, rated for 10 A at 24 V and 10 A at 230 V, with a 24 VDC coil that pulls 4 W to close and holds at 4 W. It mounts via screw or snap-on onto a standard 35 mm DIN rail, and the S00 footprint — 45 mm wide, 70 mm tall, 73 mm deep — means it takes up a single 45 mm slot in a panel. The 24 VDC coil is the control voltage — that's what the PLC output or pushbutton circuit must supply. The 4 W holding power is low enough to be driven by a standard 24 VDC power supply without a separate interposing relay, but the coil's closing power is also 4 W, so there's no inrush spike to worry about. The contact ratings at different voltages tell you what load it can switch at each voltage level: 10 A at 24 V, 10 A at 230 V, 3 A at 400 V, 1 A at 690 V. These are the thermal current ratings for the contacts in AC duty — the actual switching capacity for motor or inductive loads will be lower, but for control-circuit isolation or signaling these are the numbers to match against your load. Storage range extends to -55 to +80 °C, which covers shipping and warehouse conditions. For a procurement buyer filling a BOM line, this is a straightforward RFQ item: the part is specified, the ratings are clear, and there's no lifecycle risk. The SIRIUS series is widely stocked, so the lead time should be standard for the line — no special factory order required unless volumes are high. Width is 45 mm.","metaTitle":"Siemens 3RH2122-2BB40-ZW96 SIRIUS Auxiliary Contactor, 24 VD","metaDescription":"Siemens SIRIUS 3RH2122-2BB40-ZW96 auxiliary contactor, size S00, 24 VDC coil, 2 NO contacts, screw/snap-on 35mm DIN rail. Rated 10 A at 24 V. Active production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"73 mm","Width":"45 mm","at AC":"10 000 1/h","at DC":"7 ... 13 ms","Height":"70 mm","Upwards":"10 mm","Forwards":"10 mm","Downwards":"10 mm","Arcing Time":"10 ... 15 ms","At The Side":"6 mm","Rated Value":"24 V","Initial Value":"0.8","During Storage":"-55 ... +80 °C","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail","Full-Scale Value":"1.1","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","Solid Or Stranded":"2x (0,5 ... 4 mm²)","Product Brand Name":"SIRIUS","Degree Of Pollution":"3","Product Designation":"Auxiliary contactor","at 24 V rated value":"10 A","at 60 V rated value":"4.7 A","Of Contactor Typical":"30 000 000","at 110 V rated value":"3 A","at 220 V rated value":"1.2 A","at 230 V rated value":"10 A","at 400 V rated value":"3 A","at 440 V rated value":"0.5 A","at 500 V rated value":"2 A","at 600 V rated value":"0.26 A","at 690 V rated value":"1 A","Instantaneous Contact":"2","Relative Humidity Minimum":"10 %","Substance Prohibitance (Date)":"10/01/2009","Product Extension Auxiliary Switch":"Yes","closing power of magnet coil at DC":"4 W","holding power of magnet coil at DC":"4 W","Surge Voltage Resistance Rated Value":"6 kV","at AWG cables for auxiliary contacts":"2x (20 ... 12)","operating frequency at DC-12 maximum":"1 000 1/h","operating frequency at DC-13 maximum":"1 000 1/h","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 ... 2.5 mm²)","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","with low demand rate according to SN 31920":"40 %","Finely Stranded Without Core End Processing":"2x (0.5 ... 2.5 mm²)","with high demand rate according to SN 31920":"73 %","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","contact rating of auxiliary contacts according to UL":"A600 / Q600","Identification Number And Letter For Switching Elements":"22 E","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","Type Of Electrical Connection For Auxiliary And Control Circuit":"spring-loaded 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","design of the miniature circuit breaker for short-circuit protection of the auxiliary circuit up to 230 V":"C characteristic: 6 A; 0.4 kA"}},"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=519863&mlfb=3RH2122-2BB40-ZW96","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH2122-2BB40-ZW96/alternatives.json"},"ai":{"faq":[{"question":"What are the key dimensions for panel layout?","answer":"The part measures 45 mm wide, 70 mm tall, and 73 mm deep. Clearance requirements are 10 mm upwards, 10 mm forwards, 10 mm downwards, and 6 mm to the side."},{"question":"What is the coil voltage and power consumption?","answer":"The coil is rated for 24 VDC, with a closing power of 4 W and a holding power of 4 W."},{"question":"What contact configuration does this auxiliary contactor have?","answer":"It has 2 normally-open (NO) instantaneous contacts."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2122-2BB40-ZW96","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/3RH2122-2BB40-ZW96 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}}