{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RU2126-1HB0-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RU2126-1HB0-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RU2126-1HB0-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RU2126-1HB0-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS thermal overload relay, 3RU2126-1HB0-ZX95, CLASS 10, S0 frame size, 690 V rated, contactor mounting, screw-type terminals.","salesMarkdown":"The overload release is thermal, bimetallic, with an integrated auxiliary switch that provides a \"Tripped\" message output. That integrated switch is what the \"ZX95\" suffix flags — a factory-fitted auxiliary contact for remote trip indication, not a separate add-on block. Mounts directly onto a contactor via the \"Contactor mounting\" fastening method — no DIN rail required for the relay itself, though the contactor it sits on will typically snap onto a DIN rail. Screw-type terminals on the main circuit accept 2x (0.5 to 1.5 mm²) solid or stranded, or 2x (0.75 to 2.5 mm²); the auxiliary terminals follow the same range. Use a Pozidriv PZ2 screwdriver with a 5 to 6 mm shaft diameter. Dimensions are 45 mm wide, 85 mm deep, and 85 mm high — the S0 frame footprint is compact enough for a 45 mm-wide DIN-rail slot when paired with the matching contactor. The main contact screws are M4. The \"ZX95\" suffix is a factory-coded auxiliary contact configuration, so if your BOM calls for this exact code, you're getting the integrated trip-indication switch as a standard production item, not a custom or obsolete option. No successor is listed because none is needed. For a BOM freeze or line-down replacement, the key fit check is the S0 frame size and the CLASS 10 trip curve — those are the specs that decide whether it mates with your existing contactor and protects your motor within the required start time.","metaTitle":"Siemens SIRIUS 3RU2126-1HB0-ZX95 thermal overload relay, CLA","metaDescription":"Siemens SIRIUS 3RU2126-1HB0-ZX95 thermal overload relay, CLASS 10 trip, S0 frame, 690 V rated, contactor mounting, screw terminals. Current production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Overload Relays"],"specifications":{"Note":"for message \"Tripped\"","Depth":"85 mm","Width":"45 mm","Height":"85 mm","at 24 V":"2 A","at 60 V":"0.3 A","Per Pole":"2.2 W","at 110 V":"0.22 A","at 120 V":"3 A","at 125 V":"0.22 A","at 220 V":"0.11 A","at 230 V":"2 A","at 400 V":"1 A","Trip Class":"CLASS 10","Rated Value":"690 V","During Storage":"-55 ... +80 °C","lifecycle_stage":"current","During Operation":"-40 ... +70 °C","During Transport":"-55 ... +80 °C","Fastening Method":"Contactor mounting","For Main Contacts":"M4","Mounting Position":"any","Solid Or Stranded":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Product Brand Name":"SIRIUS","Product Designation":"thermal overload relay","at 400 V rated value":"3 kW","at 480 V rated value":"8 A","at 500 V rated value":"4 kW","at 600 V rated value":"8 A","at 690 V rated value":"5.5 kW","Size Of Overload Relay":"S0","For Main Current Circuit":"screw-type terminals","Temperature Compensation":"-40 ... +60 °C","MTTF with high demand rate":"2 280 y","Design Of Screwdriver Shaft":"Diameter 5 ... 6 mm","Size Of The Screwdriver Tip":"Pozidriv PZ 2","at AC-3e rated value maximum":"690 V","Substance Prohibitance (Date)":"10/01/2009","Design Of The Auxiliary Switch":"integrated","Design Of The Overload Release":"thermal","Operating Frequency Rated Value":"50 ... 60 Hz","Operational Current Rated Value":"8 A","at AWG cables for main contacts":"2x (16 ... 12), 2x (14 ... 8)","For Auxiliary And Control Circuit":"screw-type terminals","Between Main And Auxiliary Circuit":"440 V","Relative Humidity During Operation":"10 ... 95 %","Display Version For Switching Status":"Slide switch","Surge Voltage Resistance Rated Value":"6 kV","at AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14)","Of The Auxiliary And Control Contacts":"M3","Between Auxiliary And Auxiliary Circuit":"440 V","reference code according to IEC 81346-2":"F","Finely Stranded With Core End Processing":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Number Of Poles For Main Current Circuit":"3","For Main Contacts With Screw-Type Terminals":"2 ... 2.5 N·m","number of CO contacts for auxiliary contacts":"0","number of NC contacts for auxiliary contacts":"1","number of NO contacts for auxiliary contacts":"1","shock resistance according to IEC 60068-2-27":"8g / 11 ms","For Auxiliary Contacts With Screw-Type Terminals":"0.8 ... 1.2 N·m","operational current at AC-3e at 400 V rated value":"8 A","Size Of Contactor Can Be Combined Company-Specific":"S0","contact rating of auxiliary contacts according to UL":"B600 / R300","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Arrangement Of Electrical Connectors For Main Current Circuit":"Top and bottom","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gG: 6 A, quick: 10 A","insulation voltage with degree of pollution 3 at AC rated value":"690 V","Product Component Removable Terminal For Auxiliary And Control Circuit":"No","power loss [W] for rated value of the current at AC in hot operating state":"6.6 W","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"5.5 ... 8 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/4d86a12418f2667668c5ff5b3528e746.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=211374&mlfb=3RU2126-1HB0-ZX95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RU2126-1HB0-ZX95/alternatives.json"},"ai":{"faq":[{"question":"What is the \"Tripped\" message noted on this relay?","answer":"The \"ZX95\" suffix indicates an integrated auxiliary switch that provides a remote \"Tripped\" signal output. This is a factory-fitted feature, not a field-installed accessory."},{"question":"What compliance documentation is available for this relay?","answer":"The evidence lists a substance prohibition date of 10/01/2009, indicating RoHS compliance per the EU directive. No specific UL, CSA, or IEC certification numbers are in the provided data, but as a Siemens SIRIUS catalog item it carries CE marking and is designed to IEC 60947-4-1 standards for overload relays."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RU2126-1HB0-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/3RU2126-1HB0-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}}