{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1911-2GA04","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1911-2GA04","canonicalUrl":"https://aoctrl.com/siemens/3RH1911-2GA04","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1911-2GA04","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary switch block, 3RH1911-2GA04, 44E 4NC per EN 50011, spring-loaded terminals, 10 A max, IP20 front, 46 mm depth, 36.5 mm width, 37.5 mm height, snap-on mounting.","salesMarkdown":"The Siemens SIRIUS 3RH1911-2GA04 is a 4-pole auxiliary switch block with a 44E contact configuration — 4 normally closed contacts — laid out per EN 50011. It snaps onto a contactor relay or power contactor in the SIRIUS family, extending the auxiliary contact set without extra wiring space. The spring-loaded terminals accept 2x (0.5 to 2.5 mm²) stranded without ferrules, or 2x (0.5 to 1.5 mm²) with core-end processing, matching the standard panel-building practice for control circuits. The 46 mm depth and 36.5 mm width keep the block within the footprint of the base contactor, so it does not push the DIN-rail layout wider. The block carries a maximum thermal current of 10 A, but the real-world switching capacity depends on voltage and load type. At 24 V it handles 6 A (AC-15) or 10 A (resistive); at 230 V the AC-15 rating drops to 6 A, and at 400 V it is 3 A. For DC switching the numbers tighten further — 0.3 A at 220 V DC, 0.26 A at 600 V DC. These are the values that govern whether the block closes the cycle on a solenoid valve or a small contactor coil. Mechanical service life is rated at 10 million operating cycles typical, and contact reliability is specified at 1 faulty switching per 100 million operations at 17 V, 1 mA — relevant for low-energy PLC inputs where contact oxidation can cause intermittent faults. Snap-on mounting onto a SIRIUS contactor relay or power contactor. The block shares the same DIN-rail clip as the base device — no additional rail space consumed. The 37.5 mm height keeps it below the arc chamber of most contactors in the series.","metaTitle":"Siemens 3RH1911-2GA04 Auxiliary Switch Block, 44E 4NC, Sprin","metaDescription":"Siemens SIRIUS 3RH1911-2GA04 auxiliary switch block, 44E 4NC, spring-loaded terminals, 10 A max, IP20. Phased-out; successor 3RH2911-2GA04. Sourced to order.","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","During Storage":"-55 ... +80 °C","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"snap-on mounting","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":"0","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 (Operating 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,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=131640&mlfb=3RH1911-2GA04","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1911-2GA04/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RH1911-2GA04 and how do I get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is the closest functional replacement for 3RH1911-2GA04?","answer":"The manufacturer-designated successor is the SIRIUS 3RH2911-2GA04, a 4-pole auxiliary switch block with the same 44E contact configuration and spring-loaded terminals."},{"question":"What does the note 'with 3RH1' mean on this component line?","answer":"The note indicates this auxiliary switch block is designed for use with SIRIUS 3RH1 contactor relays and compatible power contactors in the same series."},{"question":"What are the key dimensions of 3RH1911-2GA04?","answer":"Depth is 46 mm, width is 36.5 mm, and height is 37.5 mm."},{"question":"What compliance documentation does Siemens provide for 3RH1911-2GA04?","answer":"The part carries a rated insulation voltage of 690 V AC at pollution degree 3, surge voltage resistance of 6 kV, and IP20 front protection. Specific RoHS, REACH, or UL documentation should be confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1911-2GA04","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/3RH1911-2GA04 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}}