{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RB3036-1UD0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RB3036-1UD0","canonicalUrl":"https://aoctrl.com/siemens/3RB3036-1UD0","factsUrl":"https://aoctrl.com/api/mcp/products/3RB3036-1UD0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS solid-state overload relay, size S2, 50 A thermal current, CLASS 10E, 690 V, screw terminals, contactor mounting, 3RB3036-1UD0.","salesMarkdown":"The Siemens 3RB3036-1UD0 is a SIRIUS solid-state overload relay in the S2 frame size, rated for a continuous thermal current of 50 A and a maximum operating voltage of 690 V. The integrated auxiliary switch reports a \"tripped\" message back to the controller, so the line knows exactly why it stopped. ## Mounting and wiring reality This relay mounts directly onto a contactor — the evidence calls it \"contactor mounting\" — so it shares the same DIN-rail footprint and bus system as the SIRIUS contactor it pairs with. No separate panel space needed. The main circuit uses screw terminals accepting 2x (10…35 mm²) stranded or a single 50 mm² conductor; the control circuit accepts 2x (0.25…1.5 mm²) solid or stranded. Tightening the M6 main-contact screws with a PZ2 bit at the specified 5–6 mm shaft diameter is standard panel-builder practice. The 50 A thermal current (Ith) is the continuous rating through the relay's power path — sized for a motor full-load current up to that value. The auxiliary contact ratings (2 A at 24 V, 4 A at 120 V, 3 A at 230 V) are adequate for PLC digital inputs or small contactor coils. Shock resistance to 15g / 11 ms and vibration tested per IEC 60068-2-27 mean it holds calibration on a machine that sees occasional impacts.","metaTitle":"Siemens 3RB3036-1UD0 SIRIUS Solid-State Overload Relay, 50 A","metaDescription":"Siemens 3RB3036-1UD0 SIRIUS solid-state overload relay, 50 A thermal current, CLASS 10E, 690 V. Currently in production. Available 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":"104 mm","Solid":"2x (0.25 ... 1.5 mm²)","Width":"55 mm","title":"3RB3036-1UD0","Height":"99 mm","at 24 V":"2 A","at 60 V":"0.55 A","Per Pole":"0.6 W","Stranded":"2x (10 ... 35 mm²), 1x 50 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":"690 V","description":"Overload relay 12.5...50 A Electronic For motor protection Size S2, 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":"15g / 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":"S2","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":"690 V","Substance Prohibitance (Date)":"10/15/2014","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":"6 kV","With Type Of Coordination 1 Required":"gG: 250 A","at AWG cables for auxiliary contacts":"1x (24 ... 16), 2x (24 ... 16)","for 3-phase motors at 400 V at 50 Hz":"7.5 ... 22 kW","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":"3 ... 4.5 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":"S2","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":"690 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":"1.8 W","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"12.5 ... 50 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$88.90","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/525cda296549ce06173692adc668a0f5.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=355919&mlfb=3RB3036-1UD0"},"ai":{"faq":[{"question":"What is the CLASS 10E trip class on this overload relay?","answer":"CLASS 10E means the relay will trip within 10 seconds at 7.2× the set current, which protects motor windings from locked-rotor conditions while allowing normal starting inrush."},{"question":"What does the note \"for message tripped\" mean on this part?","answer":"The integrated auxiliary switch provides a dedicated signal contact that closes when the relay trips, sending a \"tripped\" message back to the controller so the system can log the fault or initiate a restart sequence."},{"question":"Where can I buy 3RB3036-1UD0 and how is it quoted?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock figures or prices are listed here."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RB3036-1UD0","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/3RB3036-1UD0 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}}