{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2911-1HA02-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2911-1HA02-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RH2911-1HA02-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2911-1HA02-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary switch block, 3RH2911-1HA02-ZX95, 2 NC contacts, 10 A rated, screw-type terminals, snap-on mounting for 3RT2 contactors and 3RH2 contactor relays.","salesMarkdown":"The Siemens 3RH2911-1HA02-ZX95 is a front-mounted auxiliary switch block from the SIRIUS family, carrying two normally-closed (NC) contacts. It snaps onto 3RT2 power contactors and 3RH2 contactor relays, adding isolated signal feedback or interlock paths without extra panel wiring. The screw-type terminals accept 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²) with core end processing, and the AWG equivalent is 2x (20 to 16) or 2x (18 to 14). The maximum thermal current is 10 A, but the real-world switching capability depends on voltage and load type. At 24 V it switches 6 A; at 230 V it handles 6 A; at 400 V it drops to 3 A. For DC loads the curve is steeper: 10 A at 24 V, 4.7 A at 60 V, 1.2 A at 220 V, and 0.26 A at 600 V. The AC-15 rating at 690 V is 1 A — that's the inductive load rating for solenoid valves or contactor coils at higher voltages. The insulation rating is 690 V AC with pollution degree 3, and surge withstand is 6 kV, so it's fine for standard 400 V panels with decent clearance. Snap-on mounting means no tools needed — it clips directly onto the contactor or relay front. The block dimensions are 36 mm wide, 37.5 mm tall, and 43.7 mm deep, so it adds about 44 mm to the contactor depth.","metaTitle":"Siemens 3RH2911-1HA02-ZX95 SIRIUS Auxiliary Switch, 2 NC, 10","metaDescription":"Siemens SIRIUS 3RH2911-1HA02-ZX95 auxiliary switch block, 2 NC contacts, rated 10 A, screw terminals, snap-on for 3RT2/3RH2 contactors. Active production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Note":"with 3RH2","Depth":"43.7 mm","Width":"36 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","Leading Contact":"0","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"snap-on mounting","Lagging Switching":"0","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=230180&mlfb=3RH2911-1HA02-ZX95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH2911-1HA02-ZX95/alternatives.json"},"ai":{"faq":[{"question":"What contact configuration does this switch block have?","answer":"It has two normally-closed (NC) contacts, arranged as 1 NC and 1 NC on separate current paths. There are no leading, lagging, or instantaneous contacts on this variant."},{"question":"What is the maximum current rating and how does it vary with voltage?","answer":"The maximum thermal current is 10 A. For AC loads at 24 V it switches 6 A, at 230 V it handles 6 A, and at 400 V it drops to 3 A. For DC loads at 24 V it switches 10 A, at 60 V it handles 4.7 A, and at 220 V it drops to 1.2 A."},{"question":"Will this drop into a panel designed for 3RH2422-1AB00 without rewiring?","answer":"The 3RH2911-1HA02-ZX95 is a front-mounted auxiliary switch for 3RT2/3RH2 contactors, while the 3RH2422-1AB00 is a different contactor relay series. The mounting interface and terminal layout differ — verify the contactor frame compatibility before assuming a direct swap."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2911-1HA02-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/3RH2911-1HA02-ZX95 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}}