{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RB2046-1EW1","brand":"Siemens","brandSlug":"siemens","productSlug":"3RB2046-1EW1","canonicalUrl":"https://aoctrl.com/siemens/3RB2046-1EW1","factsUrl":"https://aoctrl.com/api/mcp/products/3RB2046-1EW1","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS solid-state overload relay, 3-pole, CLASS 10E, ATEX Ex II (2) GD, screw-type terminals, 124 × 70 × 106 mm.","salesMarkdown":"For a motor that starts against a heavy inertial load (centrifuge, crusher), you would step up to CLASS 20 or 30 — this one is sized for the faster-starting majority. The auxiliary circuit carries one NC contact (no CO contacts) rated at 24 V / 2 A, 120 V / 4 A, and 230 V / 3 A — these are the switching limits for the signal side, not the main power path. The 4 A at 120 V is the highest rating on the table, so that is the contact's maximum resistive switching capacity; at 24 V the 2 A limit reflects the lower voltage's reduced arc-quenching ability in a DC circuit. The screw-type terminals accept solid conductors from 0.5 to 4 mm² (or 2× 0.5 to 2.5 mm²) and finely stranded with ferrule from 0.5 to 2.5 mm² (2× 0.5 to 1.5 mm²). The clearance requirements are minimal: 0 mm upwards, forwards, backwards, and downwards, with only 6 mm needed at the side. That means it can be packed against other devices on three sides without derating, as long as the side gap is respected. Dimensions are 124 mm deep, 70 mm wide, 106 mm tall — a compact footprint for a 3-pole solid-state unit. Rated for operation from -25 to +60 °C, storage and transport from -40 to +80 °C, and 100 % relative humidity during operation — so it handles condensing environments in washdown zones or outdoor cabinets without conformal-coat worries. Shock resistance is 15 g for 11 ms, adequate for mounting on a machine frame or near a vibrating conveyor drive. Surge voltage resistance is rated at 8 kV, and burst immunity per IEC 61000-4-4 is 2 kV on power ports and 1 kV on signal ports (severity degree 3). That puts it in the standard industrial immunity class for a control panel fed from a typical 400 V distribution network with no special filtering. The substance prohibition date of 07/01/2006 aligns with the original EU RoHS directive — the part is RoHS-compliant for the current EU and UKCA markets.","metaTitle":"Siemens 3RB2046-1EW1 SIRIUS Solid-State Overload Relay, CLAS","metaDescription":"Siemens SIRIUS 3RB2046-1EW1 solid-state overload relay, 3-pole, CLASS 10E trip, ATEX Ex II (2) GD, screw terminals, 124 mm depth. Active production. RFQ for sourcing.","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","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":"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=326621&mlfb=3RB2046-1EW1","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RB2046-1EW1/alternatives.json"},"ai":{"faq":[{"question":"What compliance documentation does this part carry?","answer":"It carries ATEX approval PTB 06 ATEX 3001 Ex II (2) GD for gas and dust hazardous areas. Surge voltage resistance is 8 kV, and EMC burst immunity per IEC 61000-4-4 is severity degree 3 (2 kV power ports, 1 kV signal ports). The substance prohibition date of 07/01/2006 indicates RoHS compliance."},{"question":"What are the key ratings for the auxiliary contact?","answer":"The single NC auxiliary contact is rated 2 A at 24 V, 4 A at 120 V, and 3 A at 230 V. These are the maximum switching capacities for the signal circuit — the main motor current is handled by the straight-through transformers, not this contact."},{"question":"What conductor sizes does the screw terminal accept?","answer":"Solid conductors: 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). For AWG on auxiliary contacts: 2× 20 to 14 AWG."},{"question":"What clearance is needed around the device?","answer":"Clearance is 0 mm upwards, forwards, backwards, and downwards. Only 6 mm is needed at the side. This allows dense packing in the panel as long as the side gap is maintained."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RB2046-1EW1","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/3RB2046-1EW1 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}}