{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1911-2GA40","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1911-2GA40","canonicalUrl":"https://aoctrl.com/siemens/3RH1911-2GA40","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1911-2GA40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary switch block, 3RH1911-2GA40, 4 NO (EN 50011), spring-loaded terminals, snap-on mounting, 10 A max, IP20 front.","salesMarkdown":"## Auxiliary switch block, 4 NO, spring terminals — lifecycle note The Siemens 3RH1911-2GA40 is a SIRIUS auxiliary switch block with 4 normally-open contacts arranged per EN 50011 (40 E contact designation). It snaps onto 3RH1 contactor relays and power contactors via the snap-on mounting feature, using spring-loaded terminals for the auxiliary and control circuits — no screwdriver needed for the wire connection, just strip and push. This is a phased-out product. The manufacturer lists the preferred successor as 3RH2911-2GA40. If your BOM is locked to the 3RH1911 footprint and terminal style, the successor uses the same snap-on mounting and spring-clamp interface — verify the contact arrangement matches your control scheme. Rated for 10 A maximum, with AC-15 utilization at 690 V rated at 1 A. Snap-on mounting directly onto the contactor relay or power contactor — no DIN rail required for the block itself. The spring-loaded terminals accept 2x (0.5... 1.5 mm²) with core-end processing, or 2x (0.5... 2.5 mm²) without. AWG equivalents: 2x (20... 14). Dimensions: 46 mm depth, 36.5 mm width, 37.5 mm height. The IP20 front protection means it's intended for enclosure interiors — not for exposed washdown areas. The 4 NO contacts carry rated currents at various voltages: 10 A at 24 V (rated value), 6 A at 24 V (other listing), 6 A at 125 V, 6 A at 230 V, 6 A at 250 V, 3 A at 400 V, 0.3 A at 220 V. The AC-15 rating at 690 V is 1 A. Surge voltage resistance is 6 kV; insulation voltage at pollution degree 3 is 690 V AC. Mechanical service life is 10 million switching cycles typical.","metaTitle":"Siemens 3RH1911-2GA40 Auxiliary Switch Block, 4 NO, Spring T","metaDescription":"Siemens SIRIUS 3RH1911-2GA40 auxiliary switch block, 4 NO (EN 50011), spring-loaded terminals, snap-on mounting. Phased-out; successor 3RH2911-2GA40. Sourced to order. Request a qu","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Note":"with 3RH1","Depth":"46 mm","Width":"36.5 mm","Height":"37.5 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","Mounting type":"snap-on mounting","During Storage":"-55 ... +80 °C","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Product brand name":"SIRIUS","Suitability for use":"Contactor relay and power contactor","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":"4","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 conductors 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","Insulation voltage with degree of pollution 3 at AC rated value":"690 V","Type of electrical connection for auxiliary and control current circuit":"spring-loaded terminals"}},"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=291896&mlfb=3RH1911-2GA40","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1911-2GA40/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source for 3RH1911-2GA40?","answer":"The manufacturer's official successor is 3RH2911-2GA40. That part also uses spring-loaded terminals and snap-on mounting, but verify the contact arrangement — the 3RH2911 family offers multiple NO/NC configurations."},{"question":"Where can I buy 3RH1911-2GA40 and how do I get a price?","answer":"This phased-out part is sourced through independent distribution against an RFQ. Submit a request for quote; availability and current pricing are confirmed at that time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1911-2GA40","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/3RH1911-2GA40 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}}