{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RB2036-1UB0-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RB2036-1UB0-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RB2036-1UB0-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RB2036-1UB0-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS solid-state overload relay, 3RB2036-1UB0-ZX95, Class 10E, 3-pole, screw terminals, ATEX Ex II (2) GD, 55 x 92 x 109 mm.","salesMarkdown":"The Siemens SIRIUS 3RB2036-1UB0-ZX95 is a solid-state overload relay for three-phase motor protection. It mounts directly onto a contactor (contactor mounting), saving DIN-rail space in the panel. The 55 mm width and 92 mm height keep the footprint compact for a 3-pole device. Trip Class 10E is the headline rating: it defines the thermal memory curve for motor starting. A Class 10E relay is a good fit for standard induction motors that start unloaded or with low-inertia loads — pumps, fans, compressors. It's not intended for high-inertia starts that need a longer trip class like 20 or 30. The auxiliary contacts are rated for switching: 2 A at 24 V, 4 A at 120 V, 3 A at 230 V. That covers typical PLC input or contactor coil signals. The 6 kV surge voltage rating and 2 kV burst immunity (IEC 61000-4-4, severity 3) mean it will hold up in industrial electrical environments without nuisance trips from transients. Terminals accept solid wire from 0.5 to 4 mm² (2x 0.5 to 2.5 mm²) and stranded up to 35 mm² (1x). That covers most motor power wiring up to about 15 kW depending on the contactor match. The screw-type terminals are standard for panel wiring. This overload relay is designed for motor control centers and individual motor starters in industrial automation. The ATEX Ex II (2) GD certification means it can be used in Zone 22 (dust) and Zone 2 (gas) areas when paired with an appropriate enclosure — common in food processing, chemical plants, and grain handling where explosive atmospheres are a risk. The 100 % relative humidity rating and -25 to +60 °C operating range suit it for washdown areas and outdoor cabinets, provided the enclosure keeps direct spray off the terminals. ## Integration notes The 109 mm depth is the dimension from the contactor face to the back of the relay — check clearance against the back panel or enclosure wall, especially in shallow cabinets. The solid-state design means no bimetals to age, so trip accuracy stays consistent over time. No power dissipation per pole (0.02 W) means negligible heat contribution inside the enclosure.","metaTitle":"Siemens 3RB2036-1UB0-ZX95 SIRIUS Solid-State Overload Relay,","metaDescription":"Siemens SIRIUS 3RB2036-1UB0-ZX95 solid-state overload relay, Class 10E, 3 poles, ATEX Ex II (2) GD, screw terminals, 55 mm wide, current production.","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","Stranded":"2x (max. 25 mm²), 1 ... 35 mm²","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":"Contactor mounting","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":"screw-type terminals","Substance Prohibitance (Date)":"07/01/2006","at AWG cables for main contacts":"2 x (max. 4), 1 x (18 ... 2)","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":"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=350466&mlfb=3RB2036-1UB0-ZX95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RB2036-1UB0-ZX95/alternatives.json"},"ai":{"faq":[{"question":"What is the depth of the 3RB2036-1UB0-ZX95?","answer":"The depth is 109 mm. This is the dimension from the contactor mounting face to the rear of the relay body."},{"question":"What solid wire sizes does the 3RB2036-1UB0-ZX95 accept?","answer":"The main circuit terminals accept solid wire from 0.5 to 4 mm² (2x 0.5 to 2.5 mm²). Auxiliary and control circuit terminals accept 2x 20 to 14 AWG."},{"question":"Will the 3RB2036-1UB0-ZX95 drop into a panel specified around a 3RT6023-1BW40?","answer":"The 3RB2036-1UB0-ZX95 is designed for contactor mounting, so it will physically attach to a compatible SIRIUS contactor. The 3RT6023-1BW40 is a contactor; if that contactor is the one in your panel, the 3RB2036 should mount onto it. Verify the contactor frame size matches the relay's mounting interface — the 3RB2036 is part of the SIRIUS family and fits the standard SIRIUS contactor range."},{"question":"What compliance documentation does Siemens provide for the 3RB2036-1UB0-ZX95?","answer":"The part carries ATEX certification PTB 06 ATEX 3001 Ex II (2) GD for use in explosive atmospheres. It also has a substance prohibitance date of 07/01/2006, indicating RoHS compliance. The surge voltage and EMC immunity ratings (6 kV, 2 kV burst) align with IEC 61000-4-4 and IEC 60947 standards. UL/CSA listing is typical for SIRIUS products but not explicitly confirmed in this listing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RB2036-1UB0-ZX95","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/3RB2036-1UB0-ZX95 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}}