{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RB2036-2UX1","brand":"Siemens","brandSlug":"siemens","productSlug":"3RB2036-2UX1","canonicalUrl":"https://aoctrl.com/siemens/3RB2036-2UX1","factsUrl":"https://aoctrl.com/api/mcp/products/3RB2036-2UX1","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS solid-state overload relay, 3RB2036-2UX1, CLASS 20E, 3 poles, 1 NC auxiliary contact, spring-loaded terminals, ATEX Ex II (2) GD, stand-alone installation.","salesMarkdown":"The Siemens 3RB2036-2UX1 is a SIRIUS solid-state overload relay for three-phase motor protection, rated CLASS 20E trip class. It provides motor overload and phase-loss protection for induction motors, with a single NC (normally-closed) auxiliary contact for fault signaling. The relay is approved for ATEX Ex II (2) GD, meaning it can be used in potentially explosive atmospheres where gas and dust are present, per the PTB 06 ATEX 3001 certification. The CLASS 20E trip class means the relay allows a 20-second thermal overload before tripping at 7.2× rated current — suitable for standard motor start profiles where the inrush does not exceed that window. For auxiliary contact switching, the NC contact is rated 2 A at 24 V, 4 A at 120 V, and 3 A at 230 V, covering typical PLC input or contactor coil circuits. The 6 kV surge voltage resistance (IEC 61000-4-5) and 2 kV burst immunity on power ports (severity 3) ensure the relay holds up in industrial panels with switching transients. The main current circuit uses straight-through transformers; auxiliary and control connections are spring-loaded terminals accepting 2x (0.25...1.5 mm²) solid or finely stranded wire (AWG 24...16). Shock rated 15g / 11 ms.","metaTitle":"Siemens 3RB2036-2UX1 SIRIUS Solid-State Overload Relay, CLAS","metaDescription":"Siemens 3RB2036-2UX1 SIRIUS solid-state overload relay, CLASS 20E trip class, 3 poles, 1 NC contact, ATEX Ex II (2) GD, current production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Overload Relays"],"specifications":{"Depth":"109 mm","Solid":"2x (0.25 ... 1.5 mm²)","Width":"55 mm","Height":"92 mm","Upwards":"0 mm","at 24 V":"2 A","at 60 V":"0.55 A","Forwards":"0 mm","Per Pole":"0.02 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","Backwards":"0 mm","Downwards":"0 mm","Trip Class":"CLASS 20E","At The Side":"6 mm","During Storage":"-40 ... +80 °C","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","Product Brand Name":"SIRIUS","Type Of Protection":"PTB 06 ATEX 3001 Ex II (2) GD","Product Designation":"solid-state overload relay","For Main Current Circuit":"straight-through transformers","Substance Prohibitance (Date)":"07/01/2006","For Auxiliary And Control Circuit":"spring-loaded terminals","Relative Humidity During Operation":"100 %","Surge Voltage Resistance Rated Value":"6 kV","at AWG cables for auxiliary contacts":"2x (24 ... 16)","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","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","electrostatic discharge according to IEC 61000-4-2":"6 kV contact discharge / 8 kV air discharge","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","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":"0.05 W","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"12.5 ... 50 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=23899&mlfb=3RB2036-2UX1","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RB2036-2UX1/alternatives.json"},"ai":{"faq":[{"question":"What compliance documentation does the 3RB2036-2UX1 carry?","answer":"It is ATEX certified PTB 06 ATEX 3001 Ex II (2) GD for explosive atmospheres, RoHS compliant with a substance prohibition date of 07/01/2006, and meets IEC 61000-4-4 burst immunity at severity 3. The reference code per IEC 81346-2 is F."},{"question":"Where can I buy the 3RB2036-2UX1?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm quote."},{"question":"What is the trip class of the 3RB2036-2UX1?","answer":"The trip class is CLASS 20E, meaning it allows a 20-second thermal overload at 7.2× rated current before tripping."},{"question":"What are the auxiliary contact ratings on the 3RB2036-2UX1?","answer":"The single NC auxiliary contact is rated 2 A at 24 V, 4 A at 120 V, 3 A at 230 V, 0.55 A at 60 V, 0.3 A at 110 V, 0.3 A at 125 V, and 0.11 A at 220 V."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RB2036-2UX1","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/3RB2036-2UX1 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}}