{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1911-1FA22-ZW98","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1911-1FA22-ZW98","canonicalUrl":"https://aoctrl.com/siemens/3RH1911-1FA22-ZW98","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1911-1FA22-ZW98","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary switch, 3RH1911-1FA22-ZW98, for S00 contactor relays and power contactors, snap-on front mounting, 2 NO contacts, rated 6 A at 24 V, IP20 front protection.","salesMarkdown":"## Snap-on auxiliary switch for S00 contactors It adds two instantaneous NO contacts to the base device, expanding the control circuit without increasing the panel footprint. Rated 6 A at both 24 V and 230 V, with a maximum AC-12 operational current of 10 A. The AC-15 rating at 690 V is 1 A, covering typical control-circuit loads like PLC inputs and relay coils. The switch carries a mirror contact feature per IEC 60947-4-1 when used with 3RT1 contactors, meaning the NO contact cannot remain closed if the main contactor welds — a safety requirement for drives and motor starters where welded contacts must not go undetected. Dimensions are 41.5 mm deep by 36.5 mm wide by 37.5 mm high, fitting the standard S00 envelope. Snap-on mounting onto the contactor front means no DIN rail space is consumed — useful when the panel is already dense. The auxiliary contacts are rated for a range of control voltages: 6 A at 24 V, 2 A at 48 V and 60 V, 1 A at 110 V, 0.9 A at 125 V, 0.3 A at 220 V and 250 V, and 3 A at 400 V. These cover common AC and DC control circuits found in industrial panels. For DC switching, ratings include 10 A at 24 V, 4.7 A at 60 V, 3 A at 110 V, 1.2 A at 220 V, 0.5 A at 440 V, and 0.26 A at 600 V. ## Installation and wiring Snaps onto the front of S00 contactors — no tools, no DIN rail. Terminals accept 2 x (0.5 to 1.5 mm²) solid or stranded, or 2 x (0.75 to 2.5 mm²) with ferruled ends. AWG equivalents are 2 x (20 to 16) and 2 x (18 to 14). The switch is rated for use with contactor relays and power contactors — not as a standalone device. Substance prohibitance date is July 1, 2006, indicating RoHS compliance from that date forward. The switch carries mirror contact certification per IEC 60947-4-1 when paired with 3RT1 contactors.","metaTitle":"Siemens 3RH1911-1FA22-ZW98 SIRIUS Auxiliary Switch, 6 A at 2","metaDescription":"Siemens SIRIUS 3RH1911-1FA22-ZW98 auxiliary switch for S00 contactors. Snap-on front mount, 2 NO contacts, rated 6 A at 24 V. Current lifecycle stage, available to order. Request a","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"41.5 mm","Width":"36.5 mm","Height":"37.5 mm","at 24 V":"6 A","at 48 V":"2 A","at 60 V":"2 A","at 110 V":"1 A","at 125 V":"0.9 A","at 220 V":"0.3 A","at 230 V":"6 A","at 250 V":"0.3 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 Category":"Auxiliary switch","Size Of Contactor":"S00","Solid Or Stranded":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Product Brand Name":"SIRIUS","Product Designation":"auxiliary switch","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","Design Of The Product":"for snapping onto the front","Instantaneous Contact":"2","Substance Prohibitance (Date)":"07/01/2006","protection class IP on the front":"IP20","Surge Voltage Resistance Rated Value":"6 kV","for AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14)","Finely Stranded With Core End Processing":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","mirror contact according to IEC 60947-4-1":"Yes; with 3RT1","operational current at AC-15 at 690 V rated value":"1 A","Mechanical Service Life (Operating Cycles) Typical":"10 000 000","operational current of auxiliary contacts at AC-12 maximum":"10 A","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","number of CO contacts of auxiliary contacts instantaneous contact":"0","AWG number as coded connectable conductor cross section for auxiliary contacts":"20 ... 14"}},"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=517301&mlfb=3RH1911-1FA22-ZW98","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1911-1FA22-ZW98/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between 3RH1911-1FA22-ZW98 and 3RH2122-1BA40?","answer":"The 3RH2122-1BA40 is a larger auxiliary switch block for S2/S3 contactors, not S00. The 3RH1911-1FA22-ZW98 snaps onto S00 frames only — it will not physically mount on the larger contactor series without an adapter."},{"question":"What compliance documentation does this switch carry?","answer":"RoHS compliance is indicated by the substance prohibitance date of July 1, 2006. The mirror contact feature is certified per IEC 60947-4-1 when used with 3RT1 contactors."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1911-1FA22-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/3RH1911-1FA22-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}}