{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RU1116-1JB1","brand":"Siemens","brandSlug":"siemens","productSlug":"3RU1116-1JB1","canonicalUrl":"https://aoctrl.com/siemens/3RU1116-1JB1","factsUrl":"https://aoctrl.com/api/mcp/products/3RU1116-1JB1","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS thermal overload relay, 3RU1116-1JB1, size S00, CLASS 10, screw terminals, 690 V AC-3, IP20 front, ATEX.","salesMarkdown":"The Siemens 3RU1116-1JB1 is a SIRIUS thermal overload relay in size S00, designed to protect motors against overcurrent and phase failure by monitoring the current draw and tripping a contactor when the thermal load exceeds the CLASS 10 curve — meaning it will trip within 10 seconds at 7.2× the set current, which is the standard for standard-duty induction motors driving pumps, fans, and conveyors. The CLASS 10 trip class means this relay is sized for motors that accelerate quickly — it allows a brief inrush without nuisance tripping but clears fast enough to protect the motor winding during a stall. If your motor has a long acceleration time (high-inertia loads like centrifuges), you would need a CLASS 20 or CLASS 30 relay instead. That is the heat you need to vent inside the enclosure — in a dense panel with multiple relays side by side, derating or spacing may be needed to keep the internal ambient below the -20 to +70 °C operating range. Surge voltage resistance is rated at 6 kV, which aligns with IEC 60947-1 overvoltage category III for industrial control circuits — it can handle switching transients from contactor coils and nearby drives without flashover. ## Where it is used This class of thermal overload relay is the standard protection device for three-phase induction motors in industrial automation — found in motor control centers, conveyor drives, pump stations, and compressor skids. The ATEX approval (DMT 98 ATEX G 001) extends its use into potentially explosive atmospheres (Zone 1 or Zone 2 gas groups), so it can be specified for chemical, oil and gas, or grain-handling installations where the relay sits in a certified enclosure. Mounts stand-alone or directly onto a SIRIUS contactor of matching size S00. The mounting position allows rotation of ±135° on a vertical surface and tilting of ±45° forward/backward — useful when fitting into tight or angled panel layouts. The main circuit uses screw-type terminals accepting solid conductors: 2× (0.5 to 1.5 mm²) or 2× (0.75 to 2.5 mm²), and finely stranded with ferrule the same range. AWG equivalents: 1× (20 to 16), 1× (18 to 14), 1× 12. The auxiliary contacts (0 built-in) are not present on this variant — if you need auxiliary signaling, you add a separate auxiliary switch block. Operating temperature range -20 to +70 °C, storage and transport -55 to +80 °C. Withstands 100 % relative humidity during operation (non-condensing). Shock resistance 8g for 10 ms. Maximum operating altitude 2 000 m without derating. The part carries ATEX certification for gas atmospheres (DMT 98 ATEX G 001).","metaTitle":"Siemens 3RU1116-1JB1 SIRIUS thermal overload relay, CLASS 10","metaDescription":"Siemens SIRIUS 3RU1116-1JB1 thermal overload relay, size S00, CLASS 10 trip, 690 V max, ATEX approved, IP20 front, current production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Overload Relays"],"specifications":{"Depth":"78 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Width":"45 mm","Height":"87 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":"stand-alone installation","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":"S00","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":"1x (20 ... 16), 1x (18 ... 14), 1x 12","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), 2x (0.75 ... 2.5 mm²)","Number of poles for main current circuit":"3","at AWG conductors for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14)","For Auxiliary And Control Current Circuit":"screw-type terminals","Number of NC contacts for auxiliary contacts":"1","Number of NO contacts for auxiliary contacts":"1","Size of contactor can be combined company-specific":"S00","Removable Terminal For Auxiliary And Control Circuit":"No","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","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=323196&mlfb=3RU1116-1JB1","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RU1116-1JB1/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings for this thermal overload relay?","answer":"CLASS 10 trip curve, maximum AC-3 voltage 690 V, power dissipation 6.6 W total, surge voltage resistance 6 kV, IP20 front protection, ATEX approved for gas atmospheres."},{"question":"What is the physical size and mounting requirement?","answer":"Size S00, dimensions 45 mm wide × 87 mm high × 78 mm deep. Mounts stand-alone or on a matching S00 contactor, with ±135° rotation and ±45° tilt on a vertical surface."},{"question":"What wire sizes does the screw terminal accept?","answer":"Solid: 2× (0.5 to 1.5 mm²) or 2× (0.75 to 2.5 mm²). Finely stranded with ferrule: same range. AWG: 1× (20 to 16), 1× (18 to 14), 1× 12."},{"question":"Does this relay have built-in auxiliary contacts?","answer":"No, this variant has 0 auxiliary contacts built in. An external auxiliary switch block must be added if signaling is needed."},{"question":"What compliance certifications does it carry?","answer":"ATEX certification DMT 98 ATEX G 001 for gas atmospheres. Reference code per DIN EN 81346-2 is F."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RU1116-1JB1","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/3RU1116-1JB1 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}}