{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RB3036-1UB0-ZW96","brand":"Siemens","brandSlug":"siemens","productSlug":"3RB3036-1UB0-ZW96","canonicalUrl":"https://aoctrl.com/siemens/3RB3036-1UB0-ZW96","factsUrl":"https://aoctrl.com/api/mcp/products/3RB3036-1UB0-ZW96","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, solid-state overload relay, order code 3RB3036-1UB0-ZW96, Size S2, Class 10E, thermal current 50 A, rated 690 V, contactor mounting.","salesMarkdown":"The Siemens SIRIUS 3RB3036-1UB0-ZW96 is a solid-state overload relay, Size S2, designed for motor protection in control panels. It mounts directly onto a contactor, saving panel space and simplifying wiring. Rated thermal current is 50 A at a rated insulation voltage of 690 V, so it handles a 50 A motor load continuously on a 400 V or 480 V line. The auxiliary switch is integrated, with a note for message 'tripped' — meaning the relay provides a dedicated signaling contact (97/98) that changes state when the overload trips, which you can wire into a PLC input or alarm lamp. The trip class is Class 10E. This is the deciding factor for motor protection: it matches the thermal time constant of a standard squirrel-cage induction motor. If your motor starts against a high-inertia load that needs a longer acceleration time, a Class 20 or 30 relay would be needed instead. For most pump, fan, and conveyor drives, Class 10E is the correct choice. Thermal current is 50 A at both 480 V and 600 V rated value. This means the relay's continuous current rating does not derate across common North American line voltages — useful for a 480 V or 600 V motor branch circuit. The auxiliary switching capacity is listed per voltage: 2 A at 24 V, 4 A at 120 V, 3 A at 230 V. These are the make/break ratings for the trip-indication contact. If you are driving a 24 VDC PLC input, the 2 A rating is more than adequate — the contact is rated for the typical 10-20 mA sink current of a digital input. ## Mounting and Wiring Integration Fastening method is contactor mounting — this relay clips directly onto the front of a SIRIUS contactor, forming a compact motor starter assembly. No separate DIN-rail footprint is needed; the relay and contactor share the same mounting base. The main current circuit uses screw-type terminals accepting 1x 50 mm² or 2x 10-35 mm² stranded cable, sized for a 50 A motor feeder. Control wiring for the auxiliary contact uses smaller terminals: 1x 0.5-4 mm² or 2x 0.5-2.5 mm² solid or stranded. Mounting position is any, so the assembly can be oriented horizontally, vertically, or flat without affecting the trip curve. Shock resistance is 15g for 11 ms, vibration resistance per 1-6 Hz at 15 mm amplitude and 6-500 Hz at 20 m/s² — robust enough for machine-mounted applications near conveyors or presses.","metaTitle":"Siemens 3RB3036-1UB0-ZW96 SIRIUS Solid-State Overload Relay,","metaDescription":"Siemens SIRIUS 3RB3036-1UB0-ZW96 solid-state overload relay, Class 10E, rated 50 A thermal current at 690 V. Active production. Source to order via 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":"1x (0.5 ... 4 mm²), 2x (0.5 ... 2.5 mm²)","Width":"55 mm","title":"3RB3036-1UB0-ZW96","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 terminal Auxiliary circuit: screw terminal Manual-Automatic-Reset Multi-unit packaging Pack = 18 units","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":"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":"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":"screw-type 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","for 3-phase motors at 400 V at 50 Hz":"7.5 ... 22 kW","Of The Auxiliary And Control Contacts":"M3","for AWG cables for auxiliary contacts":"1x (20 ... 14), 2x (20 ... 14)","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","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","For Auxiliary Contacts With Screw-Type Terminals":"0.8 ... 1.2 N·m","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":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/cd098b330d446741a543d0b8700fffc9.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=730943&mlfb=3RB3036-1UB0-ZW96"},"ai":{"faq":[{"question":"What does the note 'for message tripped' on this relay mean?","answer":"The note indicates that the integrated auxiliary switch (terminals 97/98) is a signaling contact that changes state when the overload relay trips. It provides a dedicated 'tripped' message output for a PLC or alarm circuit, separate from the main motor circuit."},{"question":"What are the key ratings for this overload relay?","answer":"It is a Class 10E solid-state overload relay with a thermal current rating of 50 A at 690 V rated insulation voltage. The auxiliary contact is rated 2 A at 24 V, 4 A at 120 V, and 3 A at 230 V. Operating temperature range is -25 to +60 °C."},{"question":"What compliance documentation is available for this part?","answer":"The part has a substance prohibition date of 10/15/2014 indicating RoHS compliance. As a Siemens SIRIUS product, it also carries CE marking and is designed to IEC/EN 60947-4-1 standards for motor protection. Specific UL/CSA certification details should be confirmed from the nameplate or Siemens documentation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RB3036-1UB0-ZW96","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/3RB3036-1UB0-ZW96 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}}