{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1911-2HA22","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1911-2HA22","canonicalUrl":"https://aoctrl.com/siemens/3RH1911-2HA22","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1911-2HA22","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary switch block, 3RH1911-2HA22, 2 NO + 2 NC, spring-type terminals, 10 A max, 46×36.5×37.5 mm, snap-on mounting for 3RH1 contactors.","salesMarkdown":"It snaps onto 3RH1 contactor relays and power contactors — no tools needed for mounting. Rated for a maximum of 10 A, with DC-13 switching capability at 24 V rated at 10 A, 60 V at 4.7 A, 110 V at 3 A, and 220 V at 1.2 A. The AC-15 rating at 690 V is 1 A. Surge voltage resistance is 6 kV, insulation voltage 690 V at pollution degree 3. The compact footprint — 46 mm deep, 36.5 mm wide, 37.5 mm high — leaves room on the DIN rail for additional control gear. Snap-on mounting onto the contactor body means no extra panel space is consumed. ## Wiring and integration notes Spring-loaded terminals accept 2x (0.5 to 2.5 mm²) without core-end processing, or 2x (0.5 to 1.5 mm²) with ferrules. AWG equivalents are 2x (20 to 14). Mechanical service life is 10 million switching cycles typical. The block carries 2 instantaneous contacts and is designed for use with contactor relays and power contactors in the SIRIUS family.","metaTitle":"Siemens 3RH1911-2HA22 Auxiliary Switch Block, 2NO+2NC, Sprin","metaDescription":"Siemens SIRIUS 3RH1911-2HA22 auxiliary switch block, 2NO+2NC, spring-type terminals, 10 A max. Phased-out; successor 3RH2911-2HA22. Sourced to order against RFQ.","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":"2","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=79263&mlfb=3RH1911-2HA22","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1911-2HA22/alternatives.json"},"ai":{"faq":[{"question":"What is the direct replacement for 3RH1911-2HA22?","answer":"The preferred successor is 3RH2911-2HA22. That is the drop-in replacement for new designs or BOM updates."},{"question":"Where can I buy 3RH1911-2HA22?","answer":"As a phased-out part, the 3RH1911-2HA22 is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What are the key ratings of 3RH1911-2HA22?","answer":"Maximum current is 10 A. DC-13 ratings include 10 A at 24 V, 4.7 A at 60 V, 3 A at 110 V, and 1.2 A at 220 V. AC-15 at 690 V is 1 A. Surge voltage resistance is 6 kV, insulation voltage 690 V at pollution degree 3."},{"question":"Will 3RH1911-2HA22 fit a panel designed for 3RH2122-1WB40?","answer":"No — the 3RH1911-2HA22 is a snap-on auxiliary switch block for 3RH1 contactors, while the 3RH2122-1WB40 is a coupling relay with screw terminals and a different mounting profile (screw and snap-on onto 35 mm DIN rail, 73 mm deep vs 46 mm). They are not mechanically interchangeable without panel modification."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1911-2HA22","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/3RH1911-2HA22 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}}