{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RB2046-1EX1","brand":"Siemens","brandSlug":"siemens","productSlug":"3RB2046-1EX1","canonicalUrl":"https://aoctrl.com/siemens/3RB2046-1EX1","factsUrl":"https://aoctrl.com/api/mcp/products/3RB2046-1EX1","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS solid-state overload relay, 3RB2046-1EX1, 3-pole, CLASS 10E, ATEX Ex II (2) GD, spring-loaded terminals, 124 mm depth.","salesMarkdown":"The Siemens 3RB2046-1EX1 is a SIRIUS solid-state overload relay — a 3-pole device that protects motors against overload and phase failure by monitoring current through straight-through transformers. The auxiliary circuit uses spring-loaded terminals (cage-clamp style), accepting 2x (0.25... 1.5 mm²) solid or finely stranded wire with ferrule. That's a clean, no-torque termination — fast for panel building, and stays tight under vibration. It carries ATEX approval PTB 06 ATEX 3001 Ex II (2) GD, so it can be installed in Zone 2 gas and Zone 22 dust hazardous areas when paired with an appropriate motor and enclosure. The surge voltage resistance is rated 8 kV, and it withstands 2 kV burst on power ports per IEC 61000-4-4 severity level 3 — solid for industrial environments with switching transients. Mounts in any position — stand-alone installation, no DIN rail required. Dimensions: 70 mm wide, 106 mm tall, 124 mm deep. That zero-clearance top and bottom means you can stack it tight in a panel without worrying about airflow for heat dissipation — the solid-state design keeps self-heating low at 0.02 W per pole. Operating temperature range is -25 to +60 °C, storage and transport -40 to +80 °C, with 100% relative humidity allowed during operation — no derating needed in condensing environments. Auxiliary contact ratings: 1 NC contact (no NO). Switching capacity: 4 A at 120 V, 3 A at 230 V, 2 A at 24 V, 0.55 A at 60 V, 0.3 A at 110/125 V, 0.11 A at 220 V. That covers most PLC input and contactor coil loads — just watch the 24 V DC rating if you're driving multiple small relays.","metaTitle":"Siemens 3RB2046-1EX1 SIRIUS solid-state overload relay, CLAS","metaDescription":"Siemens 3RB2046-1EX1 SIRIUS solid-state overload relay, CLASS 10E, 3 poles, ATEX Ex II (2) GD, spring terminals. Active production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Overload Relays"],"specifications":{"Depth":"124 mm","Solid":"2x (0.25 ... 1.5 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","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":"spring-loaded terminals","Relative Humidity During Operation":"100 %","Surge Voltage Resistance Rated Value":"8 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":"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=522706&mlfb=3RB2046-1EX1","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RB2046-1EX1/alternatives.json"},"ai":{"faq":[{"question":"What wire size does the spring terminal accept?","answer":"The spring-loaded terminals accept 2x (0.25... 1.5 mm²) solid or finely stranded wire with ferrule, or 2x (24... 16) AWG for auxiliary contacts."},{"question":"What is the depth of this overload relay?","answer":"The depth is 124 mm, with zero clearance required above and below for installation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RB2046-1EX1","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/3RB2046-1EX1 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}}