{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RU2136-4DB0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RU2136-4DB0","canonicalUrl":"https://aoctrl.com/siemens/3RU2136-4DB0","factsUrl":"https://aoctrl.com/api/mcp/products/3RU2136-4DB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RU2136-4DB0 thermal overload relay, size S2, CLASS 10, 25 A at 600 V, 11 kW at 400 V, screw terminals, contactor mounting.","salesMarkdown":"## CLASS 10 trip and motor protection coordination The 3RU2136-4DB0: This coordinates with standard motor starting profiles — a motor that stalls or jams will be disconnected before the winding insulation reaches its thermal limit. Rated motor power at 400 V is 11 kW, at 500 V is 15 kW, and at 690 V is 22 kW. The continuous current rating at 480 V and 600 V is 25 A. These figures define the maximum motor frame size this relay protects in a given line voltage. ## Auxiliary contact signal ratings These ratings cover direct connection to 24 VDC PLC inputs as well as 120 V and 230 V AC control circuits — no interposing relay needed for most panels. Fastening method is contactor mounting — this relay snaps directly onto the matching SIRIUS contactor, not onto a DIN rail standalone. Dimensions are 105 mm depth, 55 mm width, 90 mm height. Temperature compensation is active from -40 to +60 °C, ensuring the trip curve stays accurate across the panel's ambient range.","metaTitle":"Siemens 3RU2136-4DB0 SIRIUS Overload Relay, CLASS 10, 25 A","metaDescription":"Siemens 3RU2136-4DB0 SIRIUS thermal overload relay, size S2, CLASS 10 trip, 25 A at 600 V, 11 kW at 400 V. Active production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Overload Relays"],"specifications":{"Note":"for message \"Tripped\"","Depth":"105 mm","Width":"55 mm","title":"3RU2136-4DB0","Height":"90 mm","at 24 V":"2 A","at 60 V":"0.3 A","Per Pole":"3.5 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","at 690 V":"0.75 A","Trip Class":"CLASS 10","Rated Value":"690 V","description":"Overload relay 18...25 A Thermal For motor protection Size S2, Class 10 Contactor mounting Main circuit: Screw Auxiliary circuit: Screw Manual-Automatic-Reset","During Storage":"-55 ... +80 °C","lifecycle_stage":"current","During Operation":"-40 ... +70 °C","During Transport":"-55 ... +80 °C","Fastening Method":"Contactor mounting","For Main Contacts":"M6","Mounting Position":"any","Solid Or Stranded":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Product Brand Name":"SIRIUS","Product Designation":"thermal overload relay","at 400 V rated value":"11 kW","at 480 V rated value":"25 A","at 500 V rated value":"15 kW","at 600 V rated value":"25 A","at 690 V rated value":"22 kW","Size Of Overload Relay":"S2","For Main Current Circuit":"screw-type terminals","Temperature Compensation":"-40 ... +60 °C","Design Of Screwdriver Shaft":"Diameter 5 ... 6 mm","Size Of The Screwdriver Tip":"Pozidriv PZ 2","at AC-3e rated value maximum":"690 V","Substance Prohibitance (Date)":"10/15/2014","Design Of The Auxiliary Switch":"integrated","Design Of The Overload Release":"thermal","Operating Frequency Rated Value":"50 ... 60 Hz","Operational Current Rated Value":"25 A","at AWG cables for main contacts":"2x (18 ... 2), 1x (18 ... 1)","For Auxiliary And Control Circuit":"screw-type terminals","Between Main And Auxiliary Circuit":"690 V","Relative Humidity During Operation":"10 ... 95 %","Display Version For Switching Status":"Slide switch","Surge Voltage Resistance Rated Value":"6 kV","at AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14)","Of The Auxiliary And Control Contacts":"M3","Between Auxiliary And Auxiliary Circuit":"415 V","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","For Main Contacts With Screw-Type Terminals":"3 ... 4.5 N·m","number of CO contacts for auxiliary contacts":"0","number of NC contacts for auxiliary contacts":"1","number of NO contacts for auxiliary contacts":"1","shock resistance according to IEC 60068-2-27":"8g / 11 ms","For Auxiliary Contacts With Screw-Type Terminals":"0.8 ... 1.2 N·m","operational current at AC-3e at 400 V rated value":"25 A","Size Of Contactor Can Be Combined Company-Specific":"S2","contact rating of auxiliary contacts according to UL":"B600 / R300","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Arrangement Of Electrical Connectors For Main Current Circuit":"Top and bottom","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse 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":"10.5 W","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"18 ... 25 A","Design Of The Miniature Circuit Breaker For Short-Circuit Protection Of The Auxiliary Switch Required":"6A (SCC less than equal to 0.5 kA; U less than equal to 260V)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$35.56","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/c063c21d45bb79954523f24f487aef5c.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=157472&mlfb=3RU2136-4DB0"},"ai":{"faq":[{"question":"What is the closest functional second-source for 3RU2136-4DB0?","answer":"The 3RV6021-4DA10 is a peer overload relay from the same SIRIUS family, but it is a different size (S0 vs S2) and has different mounting and current ranges. The 3RU2136-4DB0 is size S2, rated 25 A at 600 V, while the 3RV6021-4DA10 is size S0. They are not drop-in replacements without panel rework."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RU2136-4DB0","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/3RU2136-4DB0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}