{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RB2046-1EB0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RB2046-1EB0","canonicalUrl":"https://aoctrl.com/siemens/3RB2046-1EB0","factsUrl":"https://aoctrl.com/api/mcp/products/3RB2046-1EB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS solid-state overload relay, 3RB2046-1EB0, CLASS 10E, 3-pole, screw terminals, ATEX Ex II (2) GD, 124 × 70 × 106 mm.","salesMarkdown":"The Siemens 3RB2046-1EB0 is a SIRIUS solid-state overload relay — the part that sits between your contactor and motor, watching current and tripping on overload before the winding gets cooked. That's the standard speed for most general-purpose motor starts — fast enough to protect, slow enough to let an induction motor get up to speed. That saves panel space, but it also means you pick your contactor first, then this relay clips onto it. Depth is 124 mm, width 70 mm, height 106 mm. Solid conductor range for main circuit is 0.5 to 4 mm². The auxiliary contact ratings are given at several voltages — for instance, 2 A at 24 V, 4 A at 120 V, 3 A at 230 V. That's the switching capacity of the built-in signal contact, so if you're feeding a PLC input at 24 V, you've got 2 A to work with — plenty for a typical digital input card. At 230 V it drops to 3 A, which is still fine for a contactor coil or indicator lamp. This relay carries ATEX approval PTB 06 ATEX 3001 Ex II (2) GD. The 100 % relative humidity rating during operation means it can handle condensing environments — think washdown areas or outdoor cabinets in humid climates, as long as the enclosure keeps direct water off it. Shock resistance is 15 g for 11 ms, so it's fine for mounting on a machine frame that sees vibration.","metaTitle":"Siemens 3RB2046-1EB0 SIRIUS Solid-State Overload Relay, CLAS","metaDescription":"Siemens SIRIUS 3RB2046-1EB0 solid-state overload relay, CLASS 10E, 3-pole, 124 mm depth. ATEX Ex II (2) GD. Active production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Overload Relays"],"specifications":{"Depth":"124 mm","Solid":"0.5 ... 4 mm², 2x (0.5 ... 2.5 mm²)","Width":"70 mm","Height":"106 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 (10 ... 50 mm²), 10 ... 70 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":"2x (10 ... 1/0), 1x (10 ... 2/0)","For Auxiliary And Control Circuit":"screw-type terminals","Relative Humidity During Operation":"100 %","Surge Voltage Resistance Rated Value":"8 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":"S3","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":"1 000 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":"25 ... 100 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=11475&mlfb=3RB2046-1EB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RB2046-1EB0/alternatives.json"},"ai":{"faq":[{"question":"What compliance documentation does 3RB2046-1EB0 carry?","answer":"It carries ATEX approval PTB 06 ATEX 3001 Ex II (2) GD, RoHS compliance (substance prohibition date 07/01/2006), surge voltage resistance rated 8 kV, and IEC 61000-4-4 burst immunity at severity level 3. The product brand is SIRIUS by Siemens."},{"question":"What is the depth of the 3RB2046-1EB0?","answer":"The depth is 124 mm, width 70 mm, height 106 mm. That depth is the overall dimension including the relay body — important for enclosure depth clearance."},{"question":"What wire sizes does the 3RB2046-1EB0 accept?","answer":"For the main current circuit, solid conductors from 0.5 to 4 mm² (or 2 × 0.5 to 2.5 mm²) and stranded from 10 to 70 mm². Auxiliary and control circuits use screw terminals accepting 0.5 to 4 mm² solid or 0.5 to 2.5 mm² finely stranded with ferrule."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RB2046-1EB0","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/3RB2046-1EB0 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}}