{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RU1126-1CB0-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RU1126-1CB0-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RU1126-1CB0-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RU1126-1CB0-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS thermal overload relay, 3RU1126-1CB0-ZX95, Size S0, 3-pole, Class 10 trip, screw-type terminals, IP20 front, ATEX approved.","salesMarkdown":"## SIRIUS 3RU1126-1CB0-ZX95 — thermal overload relay, Size S0, Class 10 The relay mounts directly to a contactor via the fastening method, eliminating separate panel wiring for the power circuit. Mounts directly onto a contactor — no separate DIN-rail footprint needed for the power loop. The mounting position allows the vertical mounting surface to be rotated ±135° or tilted ±45° front/back, giving panel layout flexibility. Screw-type terminals on both main and auxiliary circuits; accepts 2× (0.5…1.5 mm²) or 2× (0.75…2.5 mm²) solid or finely stranded with ferrule, and 2× (16…12) or 2× (14…8) AWG on the mains. Auxiliary contacts similarly rated. ## Environmental and approvals Withstands 100 % relative humidity during operation. Shock resistance rated at 8g for 10 ms. Surge voltage resistance rated at 6 kV. Protection class IP20 on the front — suitable for enclosed panels where no water ingress is expected. Carries ATEX approval DMT 98 ATEX G 001, allowing use in potentially explosive gas atmospheres. The IEC 81346-2 reference code is F. Substance prohibition date per RoHS is July 1, 2006. ## Auxiliary contact ratings and power dissipation Auxiliary contact ratings: 1 A at 24 V, 0.22 A at 110 V, 3 A at 120 V, 0.22 A at 125 V, 0.11 A at 220 V, 2 A at 230 V, 1 A at 400 V. Power dissipation per pole is 1.9 W — three poles total 5.7 W, which must be considered in enclosure thermal calculations.","metaTitle":"Siemens 3RU1126-1CB0-ZX95 SIRIUS Thermal Overload Relay, Cla","metaDescription":"Siemens 3RU1126-1CB0-ZX95 SIRIUS thermal overload relay, Size S0, Class 10 trip. 3 poles, screw terminals, IP20 front. ATEX approved. Active production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Overload Relays"],"specifications":{"Depth":"96 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Width":"45 mm","Height":"97 mm","Upwards":"0 mm","at 24 V":"1 A","Forwards":"0 mm","Per Pole":"1.9 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","Backwards":"0 mm","Downwards":"0 mm","Trip Class":"CLASS 10","At The Side":"6 mm","During Storage":"-55 ... +80 °C","lifecycle_stage":"current","During Operation":"-20 ... +70 °C","During Transport":"-55 ... +80 °C","Fastening Method":"Contactor mounting","Shock Resistance":"8g / 10 ms","Mounting Position":"with vertical mounting surface +/-135° rotatable, with vertical mounting surface +/- 45° tiltable to the front and back","Product Brand Name":"SIRIUS","Type Of Protection":"DMT 98 ATEX G 001","Product Designation":"thermal overload relay","Size Of Overload Relay":"S0","For Main Current Circuit":"screw-type terminals","Substance Prohibitance (Date)":"07/01/2006","at AWG cables for main contacts":"2x (16 ... 12), 2x (14 ... 8)","protection class IP on the front":"IP20","For Auxiliary And Control Circuit":"screw-type terminals","Relative Humidity During Operation":"100 %","Surge Voltage Resistance Rated Value":"6 kV","at AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14)","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","Touch Protection Against Electrical Shock":"finger-safe","number of CO contacts for auxiliary contacts":"0","number of NC contacts for auxiliary contacts":"1","number of NO contacts for auxiliary contacts":"1","Size Of Contactor Can Be Combined Company-Specific":"S0","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/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":"5.7 W","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"1.8 ... 2.5 A"}},"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=255713&mlfb=3RU1126-1CB0-ZX95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RU1126-1CB0-ZX95/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RU1126-1CB0-ZX95 and how do I get a price?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is the closest functional equivalent to 3RU1126-1CB0-ZX95?","answer":"The 3RU2116-1FC1 is a peer in the same SIRIUS overload relay family. Both are Size S0, 3-pole, Class 10 devices with screw terminals. The 3RU1126-1CB0-ZX95 carries the ATEX approval, which the 3RU2116-1FC1 may not. Panel fit is the same footprint — no rewiring needed for a drop-in swap if the terminal assignments match."},{"question":"What compliance documentation does this relay provide?","answer":"ATEX approval DMT 98 ATEX G 001 for explosive gas atmospheres. RoHS compliance with substance prohibition date July 1, 2006. IEC 81346-2 reference code F. The IP20 front protection is standard for enclosed industrial panels."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RU1126-1CB0-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/3RU1126-1CB0-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}}