{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2911-2GA31-ZW97","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2911-2GA31-ZW97","canonicalUrl":"https://aoctrl.com/siemens/3RH2911-2GA31-ZW97","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2911-2GA31-ZW97","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary switch block, 3RH2911-2GA31-ZW97, 3 NO + 1 NC, spring-loaded terminals, 10 A max, snap-on mounting for 3RH2140 and 3RH2440 contactor relays.","salesMarkdown":"The Siemens SIRIUS 3RH2911-2GA31-ZW97 is a front-mounted auxiliary switch block for contactor relays, delivering 3 normally-open and 1 normally-closed contact set (3 NO + 1 NC) with spring-loaded terminals. It snaps onto 3RH2140 and 3RH2440 contactor relays only — physically coded so it won't mate with the wrong frame. Rated 10 A maximum, with the AC-15 switching capability at 690 V rated at 1 A, this block handles pilot-duty and control-circuit loads in a panel. Surge voltage withstand is 6 kV, which covers most installation categories up to 400 V line-to-line. Mechanical life is 10 million cycles typical, so it outlasts most contactor relays it rides on. Snap-on mounting to the contactor relay front — no tools, but the physical coding means it only fits 3RH2140 and 3RH2440 frames. Spring-loaded terminals accept 2x (0.5 to 2.5 mm²) without ferrules, or 2x (0.5 to 1.5 mm²) with ferrules. AWG equivalent is 2x (20 to 14). Strip length is not stated, but 8 mm is typical for spring-cage blocks in this class.","metaTitle":"Siemens 3RH2911-2GA31-ZW97 Auxiliary Switch, 3NO+1NC, Spring","metaDescription":"Siemens SIRIUS 3RH2911-2GA31-ZW97 auxiliary switch block, 3 NO + 1 NC contacts, 10 A max, spring-loaded terminals, snap-on mount for 3RH2140/3RH2440 contactor relays. IP20 front. S","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Note":"with 3RH2","Depth":"47.7 mm","Width":"36 mm","title":"3RH2911-2GA31-ZW97","Height":"41.5 mm","Maximum":"10 A","at 24 V":"6 A","at 60 V":"2 A","at 110 V":"1 A","at 125 V":"6 A","at 220 V":"0.3 A","at 230 V":"6 A","at 250 V":"6 A","at 400 V":"3 A","description":"auxiliary switch, on the front, 3 NO + 1 NC, 53/54, 61/62, 73/74, 83/84, current path: 1 NO, 1 NC, 1 NO, 1 NO, spring-loaded terminal, physically coded, only with contactor relays 3RH2140 and 3RH2440 combinable (according to EN 50011), multi-unit packaging, pack = 100 units","During Storage":"-55 ... +80 °C","Leading Contact":"0","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"snap-on mounting","Lagging Switching":"0","Product Brand Name":"SIRIUS","Suitability For Use":"Contactor relay","at 24 V rated value":"10 A","at 60 V rated value":"4.7 A","at 110 V rated value":"3 A","at 220 V rated value":"1.2 A","at 440 V rated value":"0.5 A","at 600 V rated value":"0.26 A","Instantaneous Contact":"3","With Core End Processing":"2x (0.5 ... 1.5 mm²)","Without Core End Processing":"2x (0.5 ... 2.5 mm²)","at AC-15 at 690 V rated value":"1 A","protection class IP on the front":"IP20","Surge Voltage Resistance Rated Value":"6 kV","at AWG cables for auxiliary contacts":"2x (20 ... 14)","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","Mechanical Service Life (Switching Cycles) 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"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/3316908064d0ea408cf7cb90aad5df95.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=129856&mlfb=3RH2911-2GA31-ZW97"},"ai":{"faq":[{"question":"What contactor relays does this auxiliary switch fit?","answer":"It is physically coded to mount only on Siemens 3RH2140 and 3RH2440 contactor relays. It will not snap onto other frames."},{"question":"What is the maximum current rating for this switch block?","answer":"The maximum continuous current is 10 A. For AC-15 inductive pilot duty at 690 V, the rated operational current is 1 A."},{"question":"Where can I buy 3RH2911-2GA31-ZW97 and get current pricing?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2911-2GA31-ZW97","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/3RH2911-2GA31-ZW97 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}