{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RB3026-2PB0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RB3026-2PB0","canonicalUrl":"https://aoctrl.com/siemens/3RB3026-2PB0","factsUrl":"https://aoctrl.com/api/mcp/products/3RB3026-2PB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS solid-state overload relay, 3RB3026-2PB0, CLASS 20E, rated 690 V, 4 A thermal current, S0 size, contactor mounting.","salesMarkdown":"Its CLASS 20E trip curve means it allows motor starting inrush up to 20 seconds before tripping — sized for standard induction motors driving pumps, fans, or conveyors where the start is not prolonged. The 4 A thermal current at 690 V rated value sets the continuous load capacity of the relay's main circuit. Contactor mounting means it snaps directly onto a matching SIRIUS contactor, saving DIN-rail space and simplifying the motor starter stack. ## Integration notes Mounts directly on a SIRIUS contactor — no DIN-rail bracket needed. Screw-type terminals accept solid or stranded wire: 1x (0.5 to 4 mm²) or 2x (0.5 to 2.5 mm²) for the main circuit, and 2x 10 mm² stranded for the auxiliary. Vibration resistance 1-6 Hz at 15 mm, 6-500 Hz at 20 m/s², 10 cycles. Shock resistance 15g / 11 ms. The integrated auxiliary switch signals the tripped state — the note for message \"tripped\" is the relay's own diagnostic output.","metaTitle":"Siemens 3RB3026-2PB0 SIRIUS Solid-State Overload Relay, CLAS","metaDescription":"Siemens 3RB3026-2PB0 SIRIUS solid-state overload relay, CLASS 20E, rated 690 V, 4 A thermal current. S0 size, contactor mounting. 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":"84 mm","Solid":"1x (0.5 ... 4 mm²), 2x (0.5 ... 2.5 mm²)","Width":"45 mm","Height":"87 mm","at 24 V":"2 A","at 60 V":"0.55 A","Per Pole":"0.03 W","Stranded":"2x 10 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 20E","Rated Value":"690 V","During Storage":"-40 ... +80 °C","Thermal Current":"4 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":"M4","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":"4 A","at 600 V rated value":"4 A","Size Of Overload Relay":"S0","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\": 9g / 11 ms","at AC-3e rated value maximum":"690 V","Substance Prohibitance (Date)":"10/01/2009","Design Of The Auxiliary Switch":"integrated","Design Of The Overload Release":"electronic","Operating Frequency Rated Value":"50 ... 60 Hz","Operational Current Rated Value":"4 A","for AC motors at 500 V at 50 Hz":"0.37 ... 2.2 kW","for AC motors at 690 V at 50 Hz":"0.55 ... 3 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: 20 A","Display Version For Switching Status":"Slide switch","Surge Voltage Resistance Rated Value":"6 kV","With Type Of Coordination 1 Required":"gG: 35 A, RK5: 15 A","for 3-phase motors at 400 V at 50 Hz":"0.37 ... 1.5 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":"2 ... 2.5 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":"4 A","Size Of Contactor Can Be Combined Company-Specific":"S0","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":"0.1 W","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"1 ... 4 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/4cecdcd9634077e1a066e922d8890092.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=473281&mlfb=3RB3026-2PB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RB3026-2PB0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RB3026-2PB0?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is the note for message 'tripped' on this relay?","answer":"The relay carries a note for message \"tripped\", which indicates the integrated auxiliary switch signals the tripped state."},{"question":"What is the depth of 3RB3026-2PB0?","answer":"The depth is 84 mm."},{"question":"Will 3RB3026-2PB0 drop into a panel specified around 3RU2116-1FC1?","answer":"Both are SIRIUS overload relays in the S0 size, so the footprint and contactor mounting are the same. No rewiring of the panel layout is needed, though terminal assignments should be verified against the existing wiring diagram."},{"question":"What compliance documentation does this brand provide?","answer":"The part carries a substance prohibitance date of 10/01/2009, indicating RoHS compliance per the EU directive. Full documentation is available from the manufacturer."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RB3026-2PB0","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/3RB3026-2PB0 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}}