{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RU1126-1JD0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RU1126-1JD0","canonicalUrl":"https://aoctrl.com/siemens/3RU1126-1JD0","factsUrl":"https://aoctrl.com/api/mcp/products/3RU1126-1JD0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS thermal overload relay, 3RU1126-1JD0, CLASS 10, S0 frame, contactor mounting, IP20 front, ATEX certified.","salesMarkdown":"## SIRIUS thermal overload relay, S0 frame, CLASS 10 It carries ATEX certification (DMT 98 ATEX G 001), confirming suitability for explosive-gas atmospheres — a key differentiator for chemical, oil-and-gas, or grain-handling installations where standard overload relays would not be permitted. Mounts directly onto a Siemens contactor (S0 frame) — no separate DIN-rail bracket needed. The mounting position allows rotation of ±135° on a vertical surface and tilting of ±45° front-to-back, giving panel builders flexibility in tight layouts. Side clearance of 6 mm is required for heat dissipation; zero clearance needed above, below, forward, or backward. Main circuit connections use screw-type terminals accepting 2× (0.5…2.5 mm²) solid or 2× (16…12 AWG) stranded. Finely stranded conductors with ferrules can be 2× (0.5…1.5 mm²). The auxiliary contact block is not integrated (0 auxiliary contacts), so an external block is needed if you require status feedback. ## Environmental and electrical ratings Operates from -20 to +70 °C, stores and transports from -55 to +80 °C. Withstands 100 % relative humidity during operation and shock loads of 8g for 10 ms — robust enough for machine-mounted applications near vibrating equipment. Power dissipation at AC in hot operating state is 6.6 W total, or 2.2 W per pole. Auxiliary contact ratings: 1 A at 24 V, 3 A at 120 V, 2 A at 230 V, 1 A at 400 V — all AC. For DC control circuits: 0.22 A at 110 V or 125 V, 0.11 A at 220 V.","metaTitle":"Siemens 3RU1126-1JD0 SIRIUS Thermal Overload Relay, CLASS 10","metaDescription":"Siemens 3RU1126-1JD0 SIRIUS thermal overload relay, CLASS 10 trip, S0 frame, 690V AC-3 max, 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 ... 2.5 mm²)","Width":"45 mm","Height":"97 mm","Maximum":"2 000 m","Upwards":"0 mm","at 24 V":"1 A","Forwards":"0 mm","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","On The Front":"IP20","Mounting type":"Contactor mounting","During Storage":"-55 ... +80 °C","lifecycle_stage":"current","During Operation":"-20 ... +70 °C","During Transport":"-55 ... +80 °C","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","For Auxiliary Contacts":"0","Size of overload relay":"S0","For Main Current Circuit":"screw-type terminals","at AC-3 rated value maximum":"690 V","at AC in hot operating state":"6.6 W","Relative humidity during operation":"100 %","at AWG conductors for main contacts":"2x (16 ... 12), 2x (14 ... 8)","Surge voltage resistance rated value":"6 kV","Reference code acc. to DIN EN 81346-2":"F","at AC in hot operating state per pole":"2.2 W","Finely Stranded With Core End Processing":"2x (0.5 ... 1.5 mm²)","Number of poles for main current circuit":"3","at AWG conductors for auxiliary contacts":"2x (20 ... 14)","For Auxiliary And Control Current Circuit":"Cage Clamp terminals","Finely Stranded Without Core End Processing":"2x (0.5 ... 1.5 mm²)","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","Removable Terminal For Auxiliary And Control Circuit":"No","Insulation voltage with degree of pollution 3 rated value":"690 V","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 6 A, quick: 10 A","Adjustable pick-up 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=265887&mlfb=3RU1126-1JD0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RU1126-1JD0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 3RU1126-1JD0 and get a price?","answer":"This part is sourced to order against an RFQ through independent distribution. Submit an RFQ for current availability and pricing — confirmed at quote time."},{"question":"What is the trip class of the 3RU1126-1JD0?","answer":"It is a CLASS 10 overload relay, meaning it will trip within 10 seconds at 7.2× the set current — the standard for standard-start induction motors."},{"question":"What compliance documentation does the 3RU1126-1JD0 carry?","answer":"It carries ATEX certification (DMT 98 ATEX G 001) for explosive-gas atmospheres. The front face is IP20 rated. Reference code per DIN EN 81346-2 is F."},{"question":"Will the 3RU1126-1JD0 drop into a panel specified around a 3RT6023-1AB00 contactor?","answer":"Yes — the 3RU1126-1JD0 is designed for direct contactor mounting on S0-frame Siemens contactors, which includes the 3RT6023-1AB00. No rewiring of the main circuit is needed if the existing contactor is an S0 frame."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RU1126-1JD0","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/3RU1126-1JD0 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}}