{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1911-1FA02-ZW97","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1911-1FA02-ZW97","canonicalUrl":"https://aoctrl.com/siemens/3RH1911-1FA02-ZW97","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1911-1FA02-ZW97","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary switch block, 3RH1911-1FA02-ZW97, 2 NC contacts per EN 50005, screw-type terminals, size S00, snap-on mounting, 10 A maximum, IP20 front.","salesMarkdown":"It mounts via snap-on fastening onto a DIN rail, occupying a width of 36.5 mm, depth of 41.5 mm, and height of 37.5 mm. The screw-type terminals accept 2x (0.5 to 1.5 mm²) and 2x (0.75 to 2.5 mm²) conductors with core-end processing, or 2x (20 to 16) and 2x (18 to 14) AWG for auxiliary circuits. ## Rated operational currents — what the voltages mean The maximum continuous current is 10 A, but the actual rating depends on the circuit voltage and duty. At 24 V AC/DC the switch block carries 6 A; at 125 V it carries 6 A; at 230 V it carries 6 A; at 400 V it carries 3 A. For DC switching at higher voltages, the ratings drop significantly: 2 A at 60 V, 1 A at 110 V, and 0.3 A at 220 V — reflecting the arc-extinction limits of the 2 NC contact set. The AC-15 rated operational current at 690 V is 1 A, which is the figure to use when switching inductive loads (solenoids, contactor coils) at that voltage level. ## Lifecycle status and sourcing reality This order code is a phased-out product per the manufacturer's listing. The official successor is the SIRIUS 3RH2 series. The 3RH2 successor shares the same S00 frame size, screw-terminal format, and snap-on DIN-rail mounting, but verify the contact configuration and terminal layout against your panel design before substituting. ## Mechanical and electrical endurance ## Environmental and insulation ratings The front face carries IP20 protection (finger-safe), while the overall unit operates from -25 °C to +60 °C and can be stored from -55 °C to +80 °C. Insulation voltage is rated at 690 V AC with pollution degree 3, and surge voltage resistance is 6 kV — figures that confirm suitability for 400 V line-to-line control panels with adequate clearance and creepage.","metaTitle":"Siemens 3RH1911-1FA02-ZW97 Auxiliary Switch Block, 2 NC, 10","metaDescription":"Siemens SIRIUS 3RH1911-1FA02-ZW97 auxiliary switch block, 2 NC contacts, 10 A max, screw terminals, snap-on mounting. Phased-out; successor is 3RH2. 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":"41.5 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), 2x (0.75 ... 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 ... 16), 2x (18 ... 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":"screw-type 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=318168&mlfb=3RH1911-1FA02-ZW97","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1911-1FA02-ZW97/alternatives.json"},"ai":{"faq":[{"question":"What is the note 'with 3RH1' on this component?","answer":"The note indicates this auxiliary switch block is designed for use with 3RH1 contactor relays and compatible S00-frame power contactors in the SIRIUS family."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1911-1FA02-ZW97","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/3RH1911-1FA02-ZW97 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}}