{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RU1126-1JB0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RU1126-1JB0","canonicalUrl":"https://aoctrl.com/siemens/3RU1126-1JB0","factsUrl":"https://aoctrl.com/api/mcp/products/3RU1126-1JB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS Size S0 thermal overload relay, 3-pole, CLASS 10, contactor-mount, screw terminals, IP20 front, ATEX certified, 96 mm depth.","salesMarkdown":"## Integration & Wiring Main current circuit uses screw-type terminals accepting 2× (0.5…1.5 mm²) and 2× (0.75…2.5 mm²) solid or finely stranded with ferrule, or AWG equivalents 2× (16…12) and 2× (14…8). Auxiliary and control circuit terminals share the same screw-type format and wire ranges. Clearance distances: 0 mm upwards, forwards, backwards, and downwards — so the relay can be stacked directly against adjacent components without extra air gap. Side clearance is 6 mm. Power dissipation per pole is 2.2 W, totaling 6.6 W across three poles at full load — factor that into the panel thermal budget if mounting in a sealed enclosure. Relative humidity during operation can reach 100 %, making it suitable for unconditioned plant-floor environments. Shock resistance rated at 8g for 10 ms, which covers most industrial vibration profiles from conveyors and compressors. The relay carries ATEX certification (DMT 98 ATEX G 001) for use in potentially explosive atmospheres when paired with an appropriate contactor and enclosure. Substance prohibitance date of 01.07.2006 aligns with RoHS compliance.","metaTitle":"Siemens 3RU1126-1JB0 SIRIUS Thermal Overload Relay, CLASS 10","metaDescription":"Siemens 3RU1126-1JB0 SIRIUS Size S0 thermal overload relay, CLASS 10 trip, 3-pole, contactor-mount, IP20 front, ATEX certified. Sourced to order against RFQ.","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","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)":"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","Relative Humidity During Operation":"100 %","reference code acc. to IEC 81346-2":"F","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 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":"7 ... 10 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=212649&mlfb=3RU1126-1JB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RU1126-1JB0/alternatives.json"},"ai":{"faq":[{"question":"What is 3RU1126-1JB0's depth?","answer":"The depth is 96 mm, with a width of 45 mm and height of 97 mm — standard S0 frame dimensions that match the corresponding SIRIUS contactor footprint."},{"question":"What wire sizes does the 3RU1126-1JB0 accept?","answer":"Main and auxiliary screw terminals accept 2× (0.5…1.5 mm²) and 2× (0.75…2.5 mm²) solid or finely stranded with ferrule, or AWG equivalents 2× (16…12) and 2× (14…8)."},{"question":"Will 3RU1126-1JB0 drop into a panel wired for 3RU2116-1FC1?","answer":"Both are SIRIUS Size S0 thermal overload relays with the same mounting footprint and contactor interface, so physical replacement without rewiring the main circuit is possible. However, the 3RU2116-1FC1 has a different current setting range — verify the motor FLA falls within the 3RU1126-1JB0's adjustment window before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RU1126-1JB0","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/3RU1126-1JB0 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}}