{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2911-2GA22-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2911-2GA22-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RH2911-2GA22-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2911-2GA22-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary switch, 3RH2911-2GA22-ZX95, snap-on for S00 contactor relays, rated 6 A at 24 V, IP20 front, current production.","salesMarkdown":"## What this auxiliary switch does in your panel It adds two instantaneous contacts to the base device, giving you feedback or interlock signals without extra wiring runs back to the PLC. The snap-on mounting means it clips directly onto the 3RH2140 or 3RH2440 auxiliary switch base — no tools needed, and it stays put under vibration in a panel cabinet. The 6 kV surge voltage resistance means it withstands switching transients on a 400 V line without flashover, which is what you need when the auxiliary contacts sit in the same enclosure as the power wiring. This switch block carries two sets of current ratings: one for the standard switching duty and one for the rated value. At 24 V you get 6 A standard and 10 A rated value; at 110 V it drops to 1 A standard and 3 A rated value. The pattern tells you the contacts are silver-alloy and sized for DC control circuits where the arc stretches with voltage. If your BOM calls for switching a 24 VDC relay coil at 2 A, this part has headroom. If you need to break a 220 VDC solenoid at 1 A, the 0.3 A standard rating says you need a different block or a DC-rated interposing relay. That matters when the auxiliary switch feeds a PLC input that sees micro-amp leakage; you won't get false signals from oxidation. ## Wiring and termination — what fits the terminals The terminals accept two conductors per clamp: 2x (0.5... 2.5 mm²) solid or stranded, or 2x (20... 14 AWG). Finely stranded wire with ferrules goes up to 1.5 mm² per clamp. The spring-cage design holds the wire without retightening, but strip length matters — aim for 8–9 mm to avoid exposed copper past the cage. ## Physical fit — dimensions for panel layout The block measures 47.7 mm deep, 36 mm wide, and 41.5 mm high. The 36 mm width matches the standard S00 contactor footprint, so it doesn't widen the assembly beyond the base device. Depth of 47.7 mm includes the snap-on latch; plan for 50 mm clearance behind the panel door if you're mounting the contactor on a DIN rail.","metaTitle":"Siemens 3RH2911-2GA22-ZX95 SIRIUS Auxiliary Switch, 6A at 24","metaDescription":"Siemens SIRIUS 3RH2911-2GA22-ZX95 auxiliary switch, snap-on for S00 contactors. Rated 6A at 24V, 10A at 24V rated value. IP20 front, current production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"47.7 mm","Width":"36 mm","title":"3RH2911-2GA22-ZX95","Height":"41.5 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","description":"auxiliary switch, on the front, 2 NO + 2 NC, 53/54, 61/62, 71/72, 83/84, current path: 1 NO, 1 NC, 1 NC, 1 NO, spring-loaded terminal, physically coded, only with contactor relays 3RH2140 and 3RH2440 combinable (according to EN 50011), reusable packaging, pack = 321 units","During Storage":"-55 ... +80 °C","Leading Contact":"0","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"snap-on mounting","Product Category":"Auxiliary switch","Lagging Switching":"0","Size Of Contactor":"S00","Solid Or Stranded":"2x (0.5 ... 2.5 mm²)","Product Brand Name":"SIRIUS","Product Designation":"auxiliary switch","Suitability For Use":"Contactor relay","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":"Can be snapped onto front of 3RH2140/3RH2440 auxiliary switch","Instantaneous Contact":"2","Substance Prohibitance (Date)":"10/01/2009","protection class IP on the front":"IP20","Surge Voltage Resistance Rated Value":"6 kV","for AWG cables for auxiliary contacts":"2x (20 ... 14)","Finely Stranded With Core End Processing":"2x (0.5 ... 1.5 mm²)","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","mirror contact according to IEC 60947-4-1":"No","Finely Stranded Without Core End Processing":"2x (0.5 ... 2.5 mm²)","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":"spring-loaded 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,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/f4a519fc1bf5a96912139f3d3c5828df.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=106274&mlfb=3RH2911-2GA22-ZX95"},"ai":{"faq":[{"question":"What is the closest functional second-source to the 3RH2911-2GA22-ZX95?","answer":"The closest functional peer in the same SIRIUS family is the 3RT1016-2AP02 contactor, but that is a main contactor device, not an auxiliary switch block. The 3RH2911-2GA22-ZX95 is designed to snap onto a 3RH2140 or 3RH2440 auxiliary switch base, not directly onto a 3RT contactor. If your panel was built around a 3RT1016-2AP02, you would need the matching auxiliary switch base first, then this block clips onto it. There is no direct drop-in replacement without the base adapter."},{"question":"What is the depth of the 3RH2911-2GA22-ZX95?","answer":"The depth is 47.7 mm. This includes the snap-on latch that engages the auxiliary switch base. Allow about 50 mm clearance behind the panel door for the full assembly."},{"question":"What is the width of the 3RH2911-2GA22-ZX95?","answer":"The width is 36 mm. This matches the standard S00 contactor frame width, so the auxiliary switch block sits flush with the contactor body on the DIN rail."},{"question":"Will the 3RH2911-2GA22-ZX95 drop into a panel specified around a 3RT1016-2AP02 without rewiring?","answer":"No, not directly. The 3RH2911-2GA22-ZX95 snaps onto a 3RH2140 or 3RH2440 auxiliary switch base, not onto the 3RT1016-2AP02 contactor itself. To use this block with that contactor, you need the base adapter first, then the block clips on. The wiring to the auxiliary terminals would need to be rerouted from the contactor's auxiliary terminals to this block's terminals."},{"question":"What compliance documentation does Siemens provide for the 3RH2911-2GA22-ZX95?","answer":"The part carries a substance prohibition date of 10/01/2009, which aligns with EU RoHS compliance. The front face is rated IP20 for finger protection. The surge voltage resistance is rated at 6 kV, indicating it meets IEC 60947-1 impulse withstand requirements. The contact reliability spec references IEC 60947-4-1 for mirror contact (this part is not mirror contact). Standard Siemens declarations of conformity for the SIRIUS family cover CE, UKCA, and EAC markings."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2911-2GA22-ZX95","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/3RH2911-2GA22-ZX95 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}