{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RU1116-0KB0-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RU1116-0KB0-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RU1116-0KB0-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RU1116-0KB0-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RU1116-0KB0-ZX95 thermal overload relay, Size S00, Class 10, 3-pole, screw terminals, IP20 front, ATEX certified.","salesMarkdown":"The auxiliary contacts are rated at 1 A at 24 V, 3 A at 120 V, 2 A at 230 V, and 1 A at 400 V — these are the switching capacities for the N/O and N/C signalling contacts that feed the PLC or motor starter feedback loop. The 6 kV surge voltage resistance (rated value) means the auxiliary circuit can handle transient overvoltages typical in industrial control panels without flashover. Power dissipation is 1.9 W per pole, so at full load the relay dumps about 5.7 W into the enclosure. In a densely packed panel with multiple starters, that heat adds up — plan for ventilation or derating if ambient inside the cabinet exceeds 40 °C. The ATEX certification (DMT 98 ATEX G 001) allows installation in potentially explosive gas atmospheres, which is a key differentiator for chemical, oil and gas, or grain handling applications. The relay fastens via contactor mounting — it snaps directly onto the matching SIRIUS contactor (e.g., 3RT2 series in Size S00). The mounting position is flexible: it can be mounted on a vertical surface with ±135° rotation or ±45° tilt forward/backward. Clearance requirements are tight: 0 mm upwards, forwards, backwards, and downwards; only 6 mm at the side is needed. This zero-clearance stacking on four sides means you can pack starters side-by-side without breathing room, which is useful for high-density MCC designs. Dimensions are 45 mm wide, 87 mm high, and 78 mm deep — the depth is the critical dimension when planning the depth of the enclosure backplate to cover clearance for the contactor/relay assembly. ## Wiring and conductor sizes The screw terminals accept solid conductors: 2x (0.5 to 1.5 mm²) and 2x (0.75 to 2.5 mm²). For finely stranded wire with ferrule processing, the same cross-section ranges apply. For AWG, the auxiliary contacts accept 2x (20 to 16) and 2x (18 to 14). The relay is rated for 100 % relative humidity during operation, so condensation-prone environments are acceptable as long as the IP20 front is respected. The relay carries a substance prohibition date of 07/01/2006, aligning with RoHS compliance. Shock resistance is rated at 8g for 10 ms, suitable for standard industrial vibration environments. The ATEX certification (DMT 98 ATEX G 001) is a key compliance document for hazardous-area installations.","metaTitle":"Siemens 3RU1116-0KB0-ZX95 SIRIUS Thermal Overload Relay, Cla","metaDescription":"Siemens 3RU1116-0KB0-ZX95 SIRIUS thermal overload relay, Size S00, Class 10 trip, IP20 front, ATEX certified. Active production. Sourced 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","Upwards":"0 mm","at 24 V":"1 A","Forwards":"0 mm","Per Pole":"1.9 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":"S00","For Main Current Circuit":"screw-type terminals","Substance Prohibitance (Date)":"07/01/2006","protection class IP on the front":"IP20","For Auxiliary And Control Circuit":"screw-type terminals","Relative Humidity During Operation":"100 %","Surge Voltage Resistance Rated Value":"6 kV","for AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14)","reference code according to IEC 81346-2":"F","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","Size Of Contactor Can Be Combined Company-Specific":"S00","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":"5.7 W","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"0.9 ... 1.25 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=116713&mlfb=3RU1116-0KB0-ZX95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RU1116-0KB0-ZX95/alternatives.json"},"ai":{"faq":[{"question":"What is the 3RU1116-0KB0-ZX95 used for?","answer":"It is a thermal overload relay for protecting three-phase motor circuits against overload and phase loss, typically mounted directly to a SIRIUS contactor in a motor starter assembly."},{"question":"What compliance documentation does Siemens provide for this relay?","answer":"The relay carries RoHS compliance (substance prohibition date 07/01/2006) and ATEX certification (DMT 98 ATEX G 001) for use in potentially explosive gas atmospheres."},{"question":"Where can I buy the 3RU1116-0KB0-ZX95 and how is it quoted?","answer":"This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm quotation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RU1116-0KB0-ZX95","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/3RU1116-0KB0-ZX95 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}}