{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RB3036-2UX1","brand":"Siemens","brandSlug":"siemens","productSlug":"3RB3036-2UX1","canonicalUrl":"https://aoctrl.com/siemens/3RB3036-2UX1","factsUrl":"https://aoctrl.com/api/mcp/products/3RB3036-2UX1","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS solid-state overload relay, 3RB3036-2UX1, Trip Class 20E, 50 A thermal current, 690 V rated value, Size S2.","salesMarkdown":"The Siemens 3RB3036-2UX1 is a SIRIUS solid-state overload relay in Size S2, rated for 50 A thermal current at up to 690 V. Its electronic overload release uses straight-through transformers for the main current circuit, with Trip Class 20E — meaning it allows a 20-second thermal overload before tripping, sized for standard motor start profiles on pumps, fans, and conveyors without nuisance trips during acceleration. The auxiliary switch is integrated, and the relay signals a \"tripped\" message via the 97/98 contact. Switching capacity varies by voltage: 2 A at 24 V, 4 A at 120 V, 3 A at 230 V, and 0.3 A at 125 V — enough to drive a PLC input or indicator lamp directly. Compliance documentation includes RoHS substance prohibition dated October 15, 2014, and the relay is designed to IEC standards for vibration (1–6 Hz, 15 mm; 6–500 Hz, 20 m/s²) and shock (15g / 11 ms per IEC 60068-2-27). The screw terminals accept 2x (0.25–1.5 mm²) solid or stranded wire, terminated with a Pozidriv PZ2 driver (shaft diameter 5–6 mm).","metaTitle":"Siemens 3RB3036-2UX1 SIRIUS Solid-State Overload Relay, Trip","metaDescription":"Siemens 3RB3036-2UX1 SIRIUS solid-state overload relay, Trip Class 20E, 50 A thermal current, 690 V rated value. Active lifecycle, available to order. Quoted against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Overload Relays"],"specifications":{"Note":"for message \"tripped\"","Depth":"109 mm","Solid":"2x (0.25 ... 1.5 mm²)","Width":"55 mm","title":"3RB3036-2UX1","Height":"81 mm","at 24 V":"2 A","at 60 V":"0.55 A","Per Pole":"0.03 W","at 110 V":"0.3 A","at 120 V":"4 A","at 125 V":"0.3 A","at 220 V":"0.11 A","at 230 V":"3 A","Trip Class":"CLASS 20E","Rated Value":"690 V","description":"Overload relay 12.5...50 A Electronic For motor protection Size S2, Class 20E Stand-alone installation Main circuit: Straight-through transformer Auxiliary circuit: Spring-type terminal Manual-Automatic-Reset","During Storage":"-40 ... +80 °C","Thermal Current":"50 A","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","During Transport":"-40 ... +80 °C","Fastening Method":"stand-alone installation","Shock Resistance":"15g / 11 ms","Mounting Position":"any","Solid Or Stranded":"2x (0,25 ... 1,5 mm²)","Product Brand Name":"SIRIUS","Product Designation":"solid-state overload relay","Vibration Resistance":"1-6 Hz, 15 mm; 6-500 Hz, 20 m/s²; 10 cycles","at 480 V rated value":"50 A","at 600 V rated value":"50 A","Size Of Overload Relay":"S2","For Main Current Circuit":"straight-through transformers","Temperature Compensation":"-25 ... +60 °C","Design Of Screwdriver Shaft":"Diameter 5 to 6 mm","Size Of The Screwdriver Tip":"Pozidriv PZ 2","according to IEC 60068-2-27":"15g / 11 ms; Signaling contact 97 / 98 in position \"Tripped\": 8g / 11 ms","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":"electronic","Operating Frequency Rated Value":"50 ... 60 Hz","Operational Current Rated Value":"50 A","for AC motors at 500 V at 50 Hz":"11 ... 30 kW","for AC motors at 690 V at 50 Hz":"11 ... 45 kW","For Auxiliary And Control Circuit":"spring-loaded terminals","Between Main And Auxiliary Circuit":"690 V","Relative Humidity During Operation":"10 ... 95 %","With Type Of Assignment 2 Required":"gG: 200 A","Display Version For Switching Status":"Slide switch","Surge Voltage Resistance Rated Value":"6 kV","With Type Of Coordination 1 Required":"gG: 250 A","at AWG cables for auxiliary contacts":"1x (24 ... 16), 2x (24 ... 16)","for 3-phase motors at 400 V at 50 Hz":"7.5 ... 22 kW","Between Auxiliary And Auxiliary Circuit":"300 V","due to burst according to IEC 61000-4-4":"2 kV (power ports), 1 kV (signal ports) corresponds to degree of severity 3","reference code according to IEC 81346-2":"F","Finely Stranded With Core End Processing":"2x (0.25 ... 1.5 mm²)","Number Of Poles For Main Current Circuit":"3","Finely Stranded Without Core End Processing":"2x (0.25 ... 1.5 mm²)","number of CO contacts for auxiliary contacts":"0","number of NC contacts for auxiliary contacts":"1","number of NO contacts for auxiliary contacts":"1","operational current at AC-3e at 400 V rated value":"50 A","Size Of Contactor Can Be Combined Company-Specific":"S2","electrostatic discharge according to IEC 61000-4-2":"6 kV contact discharge / 8 kV air discharge","Type Of Voltage Supply Via Input/Output Link Master":"No","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","insulation voltage with degree of pollution 3 at AC rated value":"690 V","Product Component Removable Terminal For Auxiliary And Control Circuit":"Yes","power loss [W] for rated value of the current at AC in hot operating state":"0.1 W","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"12.5 ... 50 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/a857ceb44aa2d3852db9902860942358.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=420692&mlfb=3RB3036-2UX1"},"ai":{"faq":[{"question":"What is the closest functional second-source for the 3RB3036-2UX1?","answer":"The 3RU2116-1FC1 is a thermal bimetallic overload relay in the same SIRIUS Size S2 family. It shares the same mounting footprint and terminal layout, so it can drop into the same panel without rewiring. The key difference is release technology: the 3RB3036-2UX1 uses an electronic overload with Trip Class 20E, while the 3RU2116-1FC1 uses a bimetallic thermal element."},{"question":"What is the depth of the 3RB3036-2UX1?","answer":"The depth is 109 mm, with a width of 55 mm and height of 81 mm. These dimensions fit standard panel layouts and the Size S2 mounting pattern."},{"question":"What compliance documentation does Siemens provide for the 3RB3036-2UX1?","answer":"The relay complies with RoHS (substance prohibition dated October 15, 2014) and is designed to IEC 60068-2-27 for shock resistance. It operates within IEC standard vibration profiles and temperature ranges. Full compliance documentation is available from the manufacturer."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RB3036-2UX1","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/3RB3036-2UX1 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}}