{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RU1126-1GB0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RU1126-1GB0","canonicalUrl":"https://aoctrl.com/siemens/3RU1126-1GB0","factsUrl":"https://aoctrl.com/api/mcp/products/3RU1126-1GB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS thermal overload relay, 3RU1126-1GB0, Size S0, 3-pole, Class 10, screw-type terminals, IP20 front protection.","salesMarkdown":"Rated for a 3-pole main circuit with screw-type terminals that accept 2x (0.5... 1.5 mm²) solid or 2x (0.75... 2.5 mm²) stranded — common wire sizes for motor starters up to the S0 frame. The auxiliary and control circuit also uses screw terminals, same wire range. The relay occupies a 45 mm wide footprint on the DIN rail, 97 mm tall, 96 mm deep. Zero clearance needed upwards, forwards, backwards, or downwards — it can butt against other components without derating. Side clearance of 6 mm is required for heat dissipation; each pole dissipates 2.2 W at full load, so don't pack it tighter than that. It handles 100 % relative humidity (condensing) and shrugs off 8g shocks for 10 ms — fine for most industrial environments including conveyors and pumps. It carries ATEX approval (DMT 98 ATEX G 001) for use in potentially explosive atmospheres, plus surge voltage resistance rated at 6 kV. Fastens directly to a contactor via the contactor mounting method — no adapter plate. Mounting position allows vertical surface with ±135° rotation or ±45° tilt front-to-back, giving flexibility in tight cabinets. The S0 size is the most common frame for motor starters up to around 18.5 kW at 400 V.","metaTitle":"Siemens 3RU1126-1GB0 SIRIUS Thermal Overload Relay, Class 10","metaDescription":"Siemens 3RU1126-1GB0 SIRIUS thermal overload relay, Size S0, Class 10 trip, 3-pole, screw terminals, IP20 front. Current production. Quoted 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":"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","Backwards":"0 mm","Downwards":"0 mm","Trip Class":"CLASS 10","At The Side":"6 mm","lifecycle_stage":"current","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)":"01.07.2006 00:00:00","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","Ambient Temperature During Storage":"-55 ... +80 °C","Relative Humidity During Operation":"100 %","reference code acc. to IEC 81346-2":"F","Ambient Temperature During Operation":"-20 ... +70 °C","Ambient Temperature During Transport":"-55 ... +80 °C","Surge Voltage Resistance Rated Value":"6 kV","at 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)","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","operating voltage at AC-3 rated value maximum":"690 V","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 Function 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":"4.5 ... 6.3 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=282904&mlfb=3RU1126-1GB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RU1126-1GB0/alternatives.json"},"ai":{"faq":[{"question":"What is the trip class of the 3RU1126-1GB0?","answer":"It is a Class 10 overload relay, meaning it trips within 10 seconds at 7.2× the current setting."},{"question":"What wire sizes does the 3RU1126-1GB0 accept?","answer":"Main and auxiliary screw terminals accept 2x (0.5 to 1.5 mm²) solid or 2x (0.75 to 2.5 mm²) stranded, plus AWG equivalents."},{"question":"Where can I buy the 3RU1126-1GB0 and get current pricing?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What compliance documentation does the 3RU1126-1GB0 carry?","answer":"It carries ATEX approval DMT 98 ATEX G 001, RoHS compliance from July 1, 2006, and surge voltage resistance rated at 6 kV."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RU1126-1GB0","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/3RU1126-1GB0 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}}