{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RU1136-4EB0-ZW98","brand":"Siemens","brandSlug":"siemens","productSlug":"3RU1136-4EB0-ZW98","canonicalUrl":"https://aoctrl.com/siemens/3RU1136-4EB0-ZW98","factsUrl":"https://aoctrl.com/api/mcp/products/3RU1136-4EB0-ZW98","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS thermal overload relay, 3RU1136-4EB0-ZW98, Size S2, Trip Class 10, screw-type terminals, contactor mounting, IP20 front protection.","salesMarkdown":"Trip Class 10 is the deciding factor for motor protection coordination. It matches the thermal characteristic of most standard squirrel-cage induction motors during start-up, allowing them to accelerate without nuisance tripping while still protecting against overload. If your motor has a longer acceleration time (high-inertia loads like centrifuges), you'd need a Class 20 or 30 relay — but for the majority of conveyor, pump, and fan applications, Class 10 is the right call. The Size S2 form factor is the mechanical interface. It mounts directly onto the corresponding S2 contactor (e.g., the 3RT1036 series), so the assembly clips together without additional hardware. Auxiliary contact ratings are given for several control voltages: 1 A at 24 V, 3 A at 120 V, 2 A at 230 V, and 1 A at 400 V. The 3 A at 120 V rating is the one most often used in North American control panels; the 1 A at 24 V covers the DC control common in European designs. Power dissipation is 4.6 W per pole. In a multi-motor panel with several relays, that heat adds up — account for it in your enclosure thermal calculation to avoid derating adjacent components. Main circuit terminals accept stranded wire from 0.75 to 35 mm² (or 2x 0.75 to 25 mm²), and AWG from 18 to 1. Auxiliary circuit terminals take solid wire 2x 0.5 to 1.5 mm² or 2x 0.75 to 2.5 mm², and AWG 2x 20 to 16 or 2x 18 to 14. That covers the range from control wiring up to the motor feeder — no adapter lugs needed for standard installations. Clearance distances are specified: 0 mm upwards, forwards, backwards, and downwards, with 6 mm at the side. This means the relay can be stacked directly against adjacent devices vertically and horizontally as long as the side gap is maintained — typical for DIN-rail or mounting-plate layouts where space is at a premium. The 100% relative humidity rating during operation means it's suitable for unconditioned indoor environments — no condensation, but high ambient moisture is acceptable. Shock resistance is 8g for 10 ms, which covers most industrial vibration from contactors and motors in the same panel. The substance prohibition date of 07/01/2006 aligns with RoHS compliance for the European market.","metaTitle":"Siemens 3RU1136-4EB0-ZW98 SIRIUS Thermal Overload Relay, Siz","metaDescription":"Siemens 3RU1136-4EB0-ZW98 SIRIUS thermal overload relay, Size S2, Trip Class 10. Current production. Contactor mounting, screw terminals, IP20 front. ATEX certified. Source via RFQ","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Overload Relays"],"specifications":{"Depth":"118 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Width":"55 mm","Height":"105 mm","Upwards":"0 mm","at 24 V":"1 A","Forwards":"0 mm","Per Pole":"4.6 W","Stranded":"2x (0.75 ... 25 mm²), 0.75 ... 35 mm²","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":"S2","For Main Current Circuit":"screw-type terminals","Substance Prohibitance (Date)":"07/01/2006","at AWG cables for main contacts":"2x (18 ... 3), 1x (18 ... 1)","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","at 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":"S2","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":"13.8 W","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"22 ... 32 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=903&mlfb=3RU1136-4EB0-ZW98","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RU1136-4EB0-ZW98/alternatives.json"},"ai":{"faq":[{"question":"What contactor does this relay mount on?","answer":"This Size S2 relay mounts directly onto the corresponding S2 contactor frame, such as the 3RT1036 series. The contactor-mounting fastening method means no separate base or wiring between the relay and contactor — it clips on and the main circuit passes through the relay's current transformers."},{"question":"What are the key auxiliary contact ratings?","answer":"The auxiliary contacts are rated 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 trip-indication and control signals. The 3 A at 120 V rating is the highest and covers most North American control circuits."},{"question":"What compliance documentation is available?","answer":"The relay carries ATEX certification (DMT 98 ATEX G 001) for use in potentially explosive atmospheres, and the substance prohibition date of 07/01/2006 indicates RoHS compliance. The IP20 front protection and 6 kV surge voltage resistance are standard for industrial control panels."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RU1136-4EB0-ZW98","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/3RU1136-4EB0-ZW98 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}}