{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1911-1HA01-ZW95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1911-1HA01-ZW95","canonicalUrl":"https://aoctrl.com/siemens/3RH1911-1HA01-ZW95","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1911-1HA01-ZW95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary switch, S00 size, snap-on front mount, 3RH1911-1HA01-ZW95, rated 6 A at 24 V, 10 A AC-12 max, IP20 front.","salesMarkdown":"## S00 Auxiliary Switch for Safety-Circuit Integration It carries a mirror contact per IEC 60947-4-1 when paired with a 3RT1 contactor, meaning the normally-closed (NC) contact position is mechanically linked to the main contacts — a requirement for safety-related feedback circuits that must detect contact welding. The front face is IP20, so the switch can sit on a panel door or enclosure cutout without additional finger protection. Rated operational current at AC-12 (resistive load) is 10 A maximum, with AC-15 (inductive, solenoid/contactor coil) ratings stepping down across the voltage range: 6 A at 24 V, 6 A at 230 V, 3 A at 400 V, and 1 A at 690 V. The 24 V and 230 V AC-15 ratings are identical at 6 A, which is unusual — verify the coil inrush if switching a large contactor bank at 230 V, as the 6 A figure is the steady-state rating. Snap-on front mounting onto the S00 contactor — no DIN rail required, no screws. The block adds 36.5 mm width, 41.5 mm depth, and 37.5 mm height to the assembly. Terminals accept 2 x (0.5 to 1.5 mm²) solid or 2 x (0.75 to 2.5 mm²) stranded with ferrules, or AWG 20–16 and 18–14. Wire both conductors in parallel for loop-through without a separate terminal strip. The IP20 front face means the switch can be mounted on a panel door that opens to the energized contactor — no additional cover required.","metaTitle":"Siemens 3RH1911-1HA01-ZW95 SIRIUS Auxiliary Switch, S00, 6 A","metaDescription":"Siemens SIRIUS 3RH1911-1HA01-ZW95 auxiliary switch for S00 contactors. Snap-on front mount, mirror contact per IEC 60947-4-1. Rated 6 A at 24 V, 10 A AC-12 max. IP20 front. Current","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":"0","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=56922&mlfb=3RH1911-1HA01-ZW95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1911-1HA01-ZW95/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional alternative to 3RH1911-1HA01-ZW95?","answer":"The 3RH2140-1BP40 is a functionally similar SIRIUS auxiliary switch but sized for the S2/S3 contactor frame, not S00. The 3RH1911-1HA01-ZW95 clips onto S00 contactors only; the 3RH2140 will not physically mount. For S00 applications, the 3RH1911-1HA01-ZW95 is the correct fit — no drop-in substitute exists in the 3RH2 family."},{"question":"What compliance documentation is available for 3RH1911-1HA01-ZW95?","answer":"The part carries a substance prohibitance date of 07/01/2006, aligning with RoHS compliance. Surge voltage resistance is rated at 6 kV. No UL or CSA listing is explicitly stated in the spec record; verify with the manufacturer for project-specific certification requirements."},{"question":"Where can I buy 3RH1911-1HA01-ZW95 and what is the lead time?","answer":"This part is sourced to order against an RFQ through independent industrial-automation distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a binding lead-time and price quote."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1911-1HA01-ZW95","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/3RH1911-1HA01-ZW95 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}}