{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RU1116-1BB1","brand":"Siemens","brandSlug":"siemens","productSlug":"3RU1116-1BB1","canonicalUrl":"https://aoctrl.com/siemens/3RU1116-1BB1","factsUrl":"https://aoctrl.com/api/mcp/products/3RU1116-1BB1","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS thermal overload relay, 3RU1116-1BB1, CLASS 10, size S00, screw terminals, 690 V AC-3 max, IP20, ATEX.","salesMarkdown":"## Siemens 3RU1116-1BB1 SIRIUS thermal overload relay The CLASS 10 trip class is the critical selection parameter: it matches the thermal curve to standard NEMA design B and IEC motors, allowing the starting inrush to pass while protecting against sustained overloads. The relay's size S00 frame occupies a 45 mm width and 87 mm height with a 78 mm depth — this is the smallest SIRIUS frame, suited for compact panels where space is tight. The screw-type terminals for the main current circuit accept solid conductors from 1× (20…16) AWG and finely stranded with ferrule from 2× (0.5…1.5 mm²) up to 2× (0.75…2.5 mm²). Auxiliary contact ratings are voltage-dependent: 3 A at 120 V, 2 A at 230 V, and 1 A at 400 V — so the control circuit voltage determines the switching capacity, not the other way around. ## Deployment context and environmental limits This relay is intended for stand-alone installation inside an IP20-rated enclosure — the front face is finger-safe, but the terminals require the panel door to be closed during operation. It can be mounted on a vertical surface with ±135° rotation and ±45° tilt forward/back, giving flexibility in tight cabinets. It withstands 8g shocks for 10 ms and operates at altitudes up to 2,000 m without derating. The ATEX certification DMT 98 ATEX G 001 qualifies it for use in potentially explosive gas atmospheres — a key differentiator for chemical, oil and gas, or grain handling applications. ## Power dissipation and thermal management In hot operating state at AC, the relay dissipates 5.7 W total, or 1.9 W per pole. This is modest for a size S00 device, but in a densely packed panel with multiple relays side-by-side, the cumulative heat must be considered. The side clearance requirement is 6 mm — adequate airflow for natural convection.","metaTitle":"Siemens 3RU1116-1BB1 SIRIUS Thermal Overload Relay, CLASS 10","metaDescription":"Siemens 3RU1116-1BB1 SIRIUS thermal overload relay, CLASS 10 trip, size S00, 690V max, IP20, ATEX certified. Active production. Quoted to order against RFQ.","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":"5.7 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":"1.9 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":"1.4 ... 2 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=189152&mlfb=3RU1116-1BB1","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RU1116-1BB1/alternatives.json"},"ai":{"faq":[{"question":"What is the trip class of the 3RU1116-1BB1?","answer":"The trip class is CLASS 10, meaning it will trip within 10 seconds at 7.2× the current setting. This is the standard for protecting general-purpose induction motors."},{"question":"What compliance certifications does the 3RU1116-1BB1 carry?","answer":"It carries ATEX certification DMT 98 ATEX G 001 for use in explosive gas atmospheres, and is IP20 rated for finger-safe front protection. It also meets the surge voltage resistance of 6 kV per IEC 60947."},{"question":"Where can I buy the 3RU1116-1BB1 and how is it quoted?","answer":"The 3RU1116-1BB1 is sourced through authorized distribution channels. It is quoted to order against an RFQ, with availability and current pricing confirmed at quote time. No minimum order quantity restrictions apply for standard orders."},{"question":"What is the closest functional alternative to the 3RU1116-1BB1?","answer":"The 3RT2526-1AD00 and 3RT2526-1AB00 are contactors in the same SIRIUS family and size S00 frame, but they are contactors, not overload relays. The 3RU1116-1BB1 is the dedicated thermal overload relay that pairs with those contactors. For a direct functional second-source, the 3RU1116-1BB1 itself is the current production part — no direct substitute is listed as an official cross-reference."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RU1116-1BB1","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/3RU1116-1BB1 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}}