{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RB3046-1UD0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RB3046-1UD0","canonicalUrl":"https://aoctrl.com/siemens/3RB3046-1UD0","factsUrl":"https://aoctrl.com/api/mcp/products/3RB3046-1UD0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS solid-state overload relay, 3RB3046-1UD0, S3 size, 50 A thermal current, CLASS 10E trip class, contactor mounting, integrated auxiliary switch.","salesMarkdown":"The Siemens 3RB3046-1UD0 is a SIRIUS solid-state overload relay in the S3 size, rated for a thermal current of 50 A and a CLASS 10E trip class. It mounts directly onto a contactor (fastening method: contactor mounting) and includes an integrated auxiliary switch with a signaling contact that reports a tripped condition. The part carries a note for message \"tripped\" — the auxiliary contact position 97/98 changes state when the relay trips, giving the PLC or motor starter a clean status signal. The 50 A thermal current (Ith) is the continuous current the relay can carry without tripping — sized for motor full-load currents up to that value. The auxiliary contact ratings cover both AC and DC control circuits: 4 A at 120 V AC, 3 A at 230 V AC, and 2 A at 24 V DC, 0.55 A at 60 V DC, 0.3 A at 125 V DC — so it can switch a PLC input or a contactor coil directly in most 24 V DC or 120 V AC control schemes. The S3 size (70 mm wide, 106 mm high, 124 mm deep) is the standard frame for SIRIUS contactor-mount overloads in the 50 A range. It fastens directly to the contactor — no separate DIN-rail footprint needed — which saves panel width. The main circuit terminals accept solid or stranded conductors up to 2× 16 mm² (stranded), and the control terminals take 2× (0.25…1.5 mm²) solid or stranded. Screw terminals with Pozidriv PZ2 driver, shaft diameter 5 to 6 mm. Mounting position is any, so horizontal busbar layouts or vertical contactor stacks both work.","metaTitle":"Siemens 3RB3046-1UD0 SIRIUS Solid-State Overload Relay, 50 A","metaDescription":"Siemens 3RB3046-1UD0 SIRIUS solid-state overload relay, 50 A thermal current, CLASS 10E trip class, S3 size, contactor mounting. Current lifecycle stage. Sourced to order.","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":"2x (0.25 ... 1.5 mm²)","Width":"70 mm","title":"3RB3046-1UD0","Height":"106 mm","at 24 V":"2 A","at 60 V":"0.55 A","Per Pole":"0.3 W","Stranded":"2x 16 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","Trip Class":"CLASS 10E","Rated Value":"1 000 V","description":"Overload relay 12.5...50 A Electronic For motor protection Size S3, Class 10E Contactor mounting Main circuit: Screw Auxiliary circuit: Spring-type terminal Manual-Automatic-Reset","During Storage":"-40 ... +80 °C","Thermal Current":"50 A","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","During Transport":"-40 ... +80 °C","Fastening Method":"Contactor mounting","Shock Resistance":"8g / 11 ms","For Main Contacts":"M6","Mounting Position":"any","Solid Or Stranded":"2x (0,25 ... 1,5 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":"50 A","at 600 V rated value":"50 A","Size Of Overload Relay":"S3","For Main Current Circuit":"screw-type terminals","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":"50 A","for AC motors at 500 V at 50 Hz":"11 ... 30 kW","for AC motors at 690 V at 50 Hz":"11 ... 45 kW","For Auxiliary And Control Circuit":"spring-loaded terminals","Between Main And Auxiliary Circuit":"690 V","Relative Humidity During Operation":"10 ... 95 %","With Type Of Assignment 2 Required":"gG: 200 A","Display Version For Switching Status":"Slide switch","Surge Voltage Resistance Rated Value":"8 kV","With Type Of Coordination 1 Required":"gG: 200 A","for 3-phase motors at 400 V at 50 Hz":"7.5 ... 22 kW","for AWG cables for auxiliary contacts":"2x (24 ... 16)","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":"2x (0.25 ... 1.5 mm²)","Number Of Poles For Main Current Circuit":"3","Finely Stranded Without Core End Processing":"2x (0.25 ... 1.5 mm²)","For Main Contacts With Screw-Type Terminals":"4.5 ... 6 N·m","number of CO contacts for auxiliary contacts":"0","number of NC contacts for auxiliary contacts":"1","number of NO contacts for auxiliary contacts":"1","operational current at AC-3e at 400 V rated value":"50 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":"0.9 W","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"12.5 ... 50 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/e1333986bcde16464171906691074f90.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=629731&mlfb=3RB3046-1UD0"},"ai":{"faq":[{"question":"What is the note for message \"tripped\" on this relay?","answer":"The note indicates that the integrated auxiliary switch (terminals 97/98) changes state when the overload relay trips, providing a discrete signal to a PLC or motor starter that the motor has been disconnected due to overload."},{"question":"What are the key dimensions of the 3RB3046-1UD0?","answer":"Width is 70 mm, height is 106 mm, and depth is 124 mm — the S3 frame size for SIRIUS contactor-mount overloads."},{"question":"What compliance documentation does this part carry?","answer":"The substance prohibition date of 03/01/2017 confirms RoHS compliance from that date. The part is designed to IEC 60068-2-27 for shock resistance and carries the Siemens SIRIUS brand quality standards."},{"question":"Where can I buy the 3RB3046-1UD0 and get current pricing?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RB3046-1UD0","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/3RB3046-1UD0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}