{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RB3046-2XW1","brand":"Siemens","brandSlug":"siemens","productSlug":"3RB3046-2XW1","canonicalUrl":"https://aoctrl.com/siemens/3RB3046-2XW1","factsUrl":"https://aoctrl.com/api/mcp/products/3RB3046-2XW1","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS solid-state overload relay, 3RB3046-2XW1, CLASS 20E, rated thermal current 115 A, S3 size, stand-alone installation.","salesMarkdown":"The Siemens 3RB3046-2XW1 is a SIRIUS solid-state overload relay — an electronic overload release with an integrated auxiliary switch, designed to protect motor circuits against sustained overcurrent. The rated thermal current is 115 A at 480 V and 600 V, so this relay handles motor full-load currents up to that level in a 480 V or 600 V distribution system. The operating frequency is 50 to 60 Hz, matching standard line frequencies worldwide. Mounting is stand-alone installation — it's not a snap-on DIN-rail unit, so plan for screw-mounting on a panel plate or sub-panel. The S3 size (70 mm wide, 106 mm high, 124 mm deep) gives you the envelope for panel layout. Any mounting position is allowed, which helps in tight enclosures. ## Where it's used and deployment context This relay lives in the motor branch circuit of a control panel, typically paired with a contactor. The straight-through transformer design for the main current circuit means the power conductors pass through the relay's current transformers — no separate CTs to wire. It's sized for the SIRIUS S3 contactor frame, so verify the contactor's AC-3 rating matches the motor full-load amps. The auxiliary switch is integrated and provides a remote trip indication signal. The note \"for message 'tripped'\" tells you the auxiliary contacts change state when the relay trips, so you can wire that into a PLC input or an alarm lamp. The auxiliary contact ratings cover common control voltages: 2 A at 24 V, 4 A at 120 V, 3 A at 230 V — enough for most pilot-duty circuits. Storage and transport range is -40 to +80 °C. Vibration resistance is 1-6 Hz at 15 mm amplitude, 6-500 Hz at 20 m/s² for 10 cycles; shock resistance is 8g for 11 ms. That's robust enough for industrial panel environments with moderate vibration from nearby contactors or drives.","metaTitle":"Siemens 3RB3046-2XW1 SIRIUS solid-state overload relay, CLAS","metaDescription":"Siemens 3RB3046-2XW1 SIRIUS solid-state overload relay, CLASS 20E, rated thermal current 115 A. S3 size, stand-alone installation. Active production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Overload Relays"],"specifications":{"Note":"for message \"tripped\"","Depth":"124 mm","Solid":"1x (0.5 ... 4 mm²), 2x (0.5 ... 2.5 mm²)","Width":"70 mm","Height":"106 mm","at 24 V":"2 A","at 60 V":"0.55 A","Per Pole":"0.2 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","Trip Class":"CLASS 20E","Rated Value":"1 000 V","During Storage":"-40 ... +80 °C","Thermal Current":"115 A","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","During Transport":"-40 ... +80 °C","Fastening Method":"stand-alone installation","Shock Resistance":"8g / 11 ms","Mounting Position":"any","Solid Or Stranded":"1x (0,5 ... 4 mm²), 2x (0,5 ... 2,5 mm²)","Product Brand Name":"SIRIUS","Product Designation":"solid-state overload relay","Vibration Resistance":"1-6 Hz, 15 mm; 6-500 Hz, 20 m/s²; 10 cycles","at 480 V rated value":"115 A","at 600 V rated value":"115 A","Size Of Overload Relay":"S3","For Main Current Circuit":"straight-through transformers","Temperature Compensation":"-25 ... +60 °C","Design Of Screwdriver Shaft":"Diameter 5 to 6 mm","Size Of The Screwdriver Tip":"Pozidriv PZ 2","according to IEC 60068-2-27":"15g / 11 ms; Signaling contact 97 / 98 in position \"Tripped\": 8g / 11 ms","at AC-3e rated value maximum":"1 000 V","Substance Prohibitance (Date)":"03/01/2017","Design Of The Auxiliary Switch":"integrated","Design Of The Overload Release":"electronic","Operating Frequency Rated Value":"50 ... 60 Hz","Operational Current Rated Value":"115 A","for AC motors at 500 V at 50 Hz":"22 ... 75 kW","for AC motors at 690 V at 50 Hz":"30 ... 90 kW","For Auxiliary And Control Circuit":"screw-type terminals","Between Main And Auxiliary Circuit":"690 V","Relative Humidity During Operation":"10 ... 95 %","With Type Of Assignment 2 Required":"gG: 315 A","Display Version For Switching Status":"Slide switch","Surge Voltage Resistance Rated Value":"8 kV","With Type Of Coordination 1 Required":"gG: 315 A","at AWG cables for auxiliary contacts":"2x (20 ... 14)","for 3-phase motors at 400 V at 50 Hz":"18.5 ... 55 kW","Of The Auxiliary And Control Contacts":"M3","Between Auxiliary And Auxiliary Circuit":"300 V","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":"1x (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","For Auxiliary Contacts With Screw-Type Terminals":"0.8 ... 1.2 N·m","operational current at AC-3e at 400 V rated value":"115 A","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","Type Of Voltage Supply Via Input/Output Link Master":"No","contact rating of auxiliary contacts according to UL":"B600 / R300","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Arrangement Of Electrical Connectors For Main Current Circuit":"Top and bottom","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse 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":"0.6 W","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"32 ... 115 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=629744&mlfb=3RB3046-2XW1","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RB3046-2XW1/alternatives.json"},"ai":{"faq":[{"question":"What does the note 'for message tripped' mean?","answer":"It means the integrated auxiliary switch is wired to signal a 'tripped' condition. When the overload relay operates, the auxiliary contacts change state, providing a remote indication — typically wired to a PLC input or alarm lamp."},{"question":"What are the key dimensions for panel layout?","answer":"Width is 70 mm, height is 106 mm, depth is 124 mm. Mounting is stand-alone (screw-mount), and any mounting position is allowed."},{"question":"What compliance documentation is available for this part?","answer":"The evidence includes a substance prohibitance date of 03/01/2017, indicating RoHS and REACH compliance. The relay is designed to IEC 60068-2-27 for shock and IEC 60068-2-6 for vibration. Standard Siemens SIRIUS documentation (datasheet, manual, CE declaration) is available upon request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RB3046-2XW1","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/3RB3046-2XW1 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}}