{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1911-2HA12","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1911-2HA12","canonicalUrl":"https://aoctrl.com/siemens/3RH1911-2HA12","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1911-2HA12","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RH1911-2HA12 auxiliary switch block, 1 NO + 2 NC, spring-loaded terminals, 10 A maximum, 46 mm depth, IP20 front.","salesMarkdown":"The Siemens 3RH1911-2HA12 is a 4-pole auxiliary switch block from the SIRIUS family, configured as 1 normally open and 2 normally closed contacts (the fourth pole is unused in this variant). It snaps onto a DIN rail and connects via spring-loaded terminals, accepting 2x (0.5... 2.5 mm²) stranded without ferrules or 2x (0.5... 1.5 mm²) with core-end processing. The block is rated for use with contactor relays and power contactors in the same series. The maximum continuous current is 10 A, but the real load capability depends on voltage and duty. For AC-15 control-circuit duty at 690 V, the rated value is 1 A — that is the figure to use when switching contactor coils or solenoid valves on a 690 V line. The DC ratings follow a similar derating curve: 10 A at 24 V DC, dropping to 0.26 A at 600 V DC. Surge voltage resistance is rated at 6 kV, and insulation voltage at 690 V AC with pollution degree 3. Snap-on mounting to a DIN rail (EN 50012 profile). Dimensions: 46 mm depth, 36.5 mm width, 37.5 mm height. The spring-loaded terminals accept AWG 20–14 for auxiliary circuits. The block is designed to mount directly alongside SIRIUS contactors and contactor relays, sharing the same rail and wiring plane.","metaTitle":"Siemens 3RH1911-2HA12 Auxiliary Switch Block, 10 A, Spring-T","metaDescription":"Siemens 3RH1911-2HA12 SIRIUS auxiliary switch block, 1 NO + 2 NC, 10 A max, spring-loaded terminals, 46 mm depth. Phased-out; successor 3RH2911-2HA12. 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","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":"1","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,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=419104&mlfb=3RH1911-2HA12","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1911-2HA12/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RH1911-2HA12 and how do I get a price?","answer":"The 3RH1911-2HA12 is sourced 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."},{"question":"What is 3RH1911-2HA12's listed depth?","answer":"The depth is 46 mm, with a width of 36.5 mm and height of 37.5 mm."},{"question":"What is the note 'with 3RH1' on this component?","answer":"The note 'with 3RH1' indicates this auxiliary switch block is designed for use with SIRIUS 3RH1 contactor relays and power contactors, sharing the same mounting and wiring interface."},{"question":"What compliance documentation does this brand provide for 3RH1911-2HA12?","answer":"As a Siemens SIRIUS component, the 3RH1911-2HA12 is covered by the manufacturer's standard declarations for RoHS, REACH, and applicable IEC/UL standards. Specific certificates are available on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1911-2HA12","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/3RH1911-2HA12 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}}