{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RB2036-1QW1","brand":"Siemens","brandSlug":"siemens","productSlug":"3RB2036-1QW1","canonicalUrl":"https://aoctrl.com/siemens/3RB2036-1QW1","factsUrl":"https://aoctrl.com/api/mcp/products/3RB2036-1QW1","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS solid-state overload relay, 3RB2036-1QW1, 3-pole, Trip Class 10E, ATEX Ex II (2) GD, 1 NC auxiliary contact, screw-type terminals, 55 x 92 x 109 mm.","salesMarkdown":"The Siemens SIRIUS 3RB2036-1QW1 is a 3-pole solid-state overload relay for motor protection in three-phase circuits. It carries ATEX Ex II (2) GD certification, meaning it can be used in Zone 1 gas and Zone 21 dust hazardous areas when paired with an appropriate motor and enclosure. That's the main differentiator from a standard thermal overload — it's spec'd into Ex-rated panels from the start. The Trip Class 10E is the headline rating: it defines the thermal memory curve for motor starting. If your motor accelerates in under 10 seconds, this class matches. For longer starts (high-inertia loads like fans or centrifuges), you'd need a Class 20 or 30 relay — but that's a different order code. The auxiliary contact block provides 1 NC contact and 0 CO contacts. That NC is wired into the contactor coil circuit to drop the motor on overload. No spare CO for a remote signal unless you add an auxiliary contact block externally. Wire termination is screw-type on the control side, accepting solid conductors from 0.5 to 4 mm² (or 2× 0.5 to 2.5 mm²). The main current circuit uses straight-through transformers — the motor leads pass through the relay's integral current transformers, so no separate CTs are needed. Surge voltage resistance is rated at 6 kV, and burst immunity meets IEC 61000-4-4 severity level 3 (2 kV on power ports, 1 kV on signal ports). That's enough for most industrial panels without additional suppression. Stand-alone installation means it doesn't require a dedicated mounting base — just screw it to the panel plate or DIN rail adapter. This relay goes into motor control centers (MCCs) and standalone starter enclosures protecting three-phase induction motors up to the current range of the straight-through transformer window. The ATEX approval makes it a natural fit for chemical, oil & gas, grain handling, and pharmaceutical lines where Ex-rated equipment is mandatory. The 100% humidity tolerance during operation means it holds up in washdown areas and outdoor cabinets without conformal coating worries.","metaTitle":"Siemens 3RB2036-1QW1 SIRIUS solid-state overload relay, Clas","metaDescription":"Siemens SIRIUS 3RB2036-1QW1 solid-state overload relay, 3 poles, Trip Class 10E, ATEX Ex II (2) GD, 1 NC contact, screw terminals, 55 mm wide. Current production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Overload Relays"],"specifications":{"Depth":"109 mm","Solid":"0.5 ... 4 mm², 2x (0.5 ... 2.5 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 10E","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":"screw-type terminals","Relative Humidity During Operation":"100 %","Surge Voltage Resistance Rated Value":"6 kV","at AWG cables for auxiliary contacts":"2x (20 ... 14)","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":"0.5 ... 2.5 mm², 2x (0.5 ... 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":"6 ... 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=84375&mlfb=3RB2036-1QW1","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RB2036-1QW1/alternatives.json"},"ai":{"faq":[{"question":"What compliance documentation does this relay carry?","answer":"It carries ATEX Ex II (2) GD certification (PTB 06 ATEX 3001), RoHS compliance with a substance prohibition date of July 1, 2006, and EMC immunity per IEC 61000-4-4 severity level 3."},{"question":"What wire sizes does the control circuit accept?","answer":"Screw-type terminals accept solid conductors from 0.5 to 4 mm², or 2× 0.5 to 2.5 mm². Finely stranded with ferrule: 0.5 to 2.5 mm², or 2× 0.5 to 1.5 mm². AWG for auxiliary contacts: 2× 20 to 14."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RB2036-1QW1","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/3RB2036-1QW1 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}}