{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1911-2FA31-ZW98","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1911-2FA31-ZW98","canonicalUrl":"https://aoctrl.com/siemens/3RH1911-2FA31-ZW98","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1911-2FA31-ZW98","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary switch block, 3RH1911-2FA31-ZW98, 3 NO + 1 NC, spring-loaded terminals, size S00, snap-on mounting.","salesMarkdown":"It snaps onto the contactor via the standard DIN-rail mounting method, occupying a 36.5 mm width and 46 mm depth on the rail. Spring-loaded terminals accept 2x (0.5... 1.5 mm²) with ferrules or 2x (0.5... 2.5 mm²) solid, or 2x (20... 14) AWG — no screwdriver torque needed, which speeds panel wiring. The contacts carry a maximum of 10 A, but the real-world rating depends on the voltage and load type. At 24 V the rated operational current is 10 A; at 230 V AC it's 6 A; at 400 V it drops to 3 A. For DC switching, the 24 V DC rating is 6 A, and at 110 V DC it's 1 A — the arc extinction limits current as voltage rises. Multi-unit packaging of 60 pieces is the standard delivery unit for this variant. If your design is still in development, the 3RH2 successor should be evaluated for drop-in compatibility. Snap-on mounting onto 35 mm DIN rail per EN 50022, size S00 footprint — the block adds 36.5 mm to the contactor width and 46 mm depth from the rail. Mechanical service life is 10 million switching cycles typical, which matches the base contactor's auxiliary block endurance.","metaTitle":"Siemens 3RH1911-2FA31-ZW98 SIRIUS Auxiliary Switch Block, 3","metaDescription":"Siemens SIRIUS 3RH1911-2FA31-ZW98 auxiliary switch block. 3 NO + 1 NC contacts, spring-loaded terminals, snap-on for S00 contactors. 10 A max, 690 V insulation. Phased-out; success","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":"3","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=192342&mlfb=3RH1911-2FA31-ZW98","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1911-2FA31-ZW98/alternatives.json"},"ai":{"faq":[{"question":"What replaces 3RH1911-2FA31-ZW98?","answer":"The official Siemens successor is the SIRIUS 3RH2 series auxiliary switch block. The specific order code for the replacement should be verified against your contactor model and contact configuration."},{"question":"Will this fit a 3RT1015-1BB42 contactor?","answer":"Both are SIRIUS size S00 products with snap-on mounting onto 35 mm DIN rail. The 3RH1911-2FA31-ZW98 is designed for SIRIUS contactor relays and power contactors in size S00, which includes the 3RT1015 series. The block adds 3 NO + 1 NC auxiliary contacts via spring-loaded terminals, whereas the 3RT1015-1BB42 uses screw-type terminals for its main circuit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1911-2FA31-ZW98","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/3RH1911-2FA31-ZW98 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}}