{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2911-2NP22-0MC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2911-2NP22-0MC0","canonicalUrl":"https://aoctrl.com/siemens/3RH2911-2NP22-0MC0","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2911-2NP22-0MC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3RH2911-2NP22-0MC0 auxiliary switch block, solid-state compatible, 2 NO + 2 NC contacts, spring-loaded terminals, snap-on mounting, IP20 front, 47.7 mm depth.","salesMarkdown":"## What this auxiliary switch block does The Siemens 3RH2911-2NP22-0MC0 is a front-mounted auxiliary switch block for contactors, delivering 2 normally-open and 2 normally-closed contacts in a 36 mm wide housing that snaps onto the contactor without tools. It's designed for solid-state compatible switching — one NO and one NC contact are optimised for low-level signals, meaning a PLC input reading a 5 V, 1 mA signal won't see intermittent opens over the block's 5 million mechanical cycle life. ## Wiring and termination reality No screwdriver needed for termination; strip, push, and the cage holds. The contact arrangement is labelled 53/54 (NO), 61/62 (NC), 71/72 (NC), 83/84 (NO) on the block face, matching standard Siemens numbering. Leading and lagging contacts are both zero — all four switch simultaneously. ## Where it mounts and what it tolerates Snap-on mounting to the contactor front — no DIN rail required. The block fits Siemens 3RT102 and 3RT103 contactors via adapter kits 3RT2926-4NA00 or 3RT2936-4NA00 respectively. Rated insulation voltage 690 V at pollution degree 3, surge voltage resistance 6 kV.","metaTitle":"Siemens 3RH2911-2NP22-0MC0 Auxiliary Switch, 2NO+2NC","metaDescription":"Siemens 3RH2911-2NP22-0MC0 auxiliary switch block, 2 NO + 2 NC contacts, spring-loaded terminals. Solid-state compatible. IP20 front. Snap-on mount.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"47.7 mm","Width":"36 mm","title":"3RH2911-2NP22-0MC0","Height":"41.5 mm","at 24 V":"0.3 A","at 60 V":"0.3 A","description":"auxiliary switch, solid-state compatible, on the front, 2 NO + 2 NC, 53/54, 61/62, 71/72, 83/84, current path: 1 NO (solid-state compatible), 1 NC, 1 NC, 1 NO (solid-state compatible), spring-loaded terminal, for 3RT102..-.X...-0LA(0.2) with adapter 3RT2926-4NA00 and for 3RT103..-.X...-0LA(0.2) with adapter 3RT2936-4NA00","During Storage":"-55 ... +80 °C","Leading Contact":"0","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"snap-on mounting","Lagging Switching":"0","Suitability For Use":"Contactor relay and power contactor","Instantaneous Contact":"2","With Core End Processing":"2x (0.5 ... 1.5 mm²)","Without Core End Processing":"2x (0.5 ... 2.5 mm²)","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":"one incorrect switching operation of 100 million switching operations (5 V, 1 mA)","Mechanical Service Life (Switching Cycles) Typical":"5 000 000","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/ed1cd062589d9fdea718a2b13f66310e.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1458579&mlfb=3RH2911-2NP22-0MC0"},"ai":{"faq":[{"question":"Does 3RH2911-2NP22-0MC0 have solid-state compatible contacts?","answer":"Yes. Two of the four contacts (one NO and one NC) are rated for solid-state switching, with a contact reliability of one incorrect switching operation per 100 million operations at 5 V, 1 mA — this means PLC inputs and low-power logic signals will not experience intermittent opens during the block's service life."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2911-2NP22-0MC0","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/3RH2911-2NP22-0MC0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:47:38.189Z","lastPublished":"2026-07-22T19:47:38.189Z","indexable":true}}