{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RB3026-1VB0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RB3026-1VB0","canonicalUrl":"https://aoctrl.com/siemens/3RB3026-1VB0","factsUrl":"https://aoctrl.com/api/mcp/products/3RB3026-1VB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS solid-state overload relay, size S0, 40 A thermal current, Trip Class 10E, screw terminals, contactor mounting, 3RB3026-1VB0.","salesMarkdown":"## SIRIUS solid-state overload relay, size S0, 40 A The Siemens 3RB3026-1VB0 is a SIRIUS solid-state overload relay in size S0, rated for a thermal current of 40 A and Trip Class 10E. The integrated auxiliary switch provides signaling contacts rated at 2 A at 24 V, 4 A at 120 V, and 3 A at 230 V, among other voltage points. The note on this relay reads \"for message 'tripped'\" — meaning the auxiliary contact position signals the tripped state, not a pre-trip warning. ## Trip Class 10E and thermal current rating The 40 A thermal current rating (Ith) applies at both 480 V and 600 V rated values, so it handles continuous current up to 40 A in the main circuit without derating for voltage up to 690 V. Per-pole power dissipation is 1 W, which helps when calculating enclosure heat rise. Size S0 is the compact frame for overload relays up to 40 A. Fastening method is contactor mounting — it clips directly onto the matching SIRIUS contactor, no DIN rail adapter needed. Mounting position is any orientation. The screw terminals accept 1x (0.5 to 4 mm²) solid or 2x (0.5 to 2.5 mm²) stranded per clamp; main circuit terminals accept 2x 10 mm² stranded. Screwdriver spec: Pozidriv PZ2 tip, shaft diameter 5–6 mm. Dimensions: 45 mm wide, 87 mm high, 84 mm deep — fits standard panel layouts. Storage and transport range is -40 to +80 °C. Shock resistance: 15g for 11 ms on the main body; the signaling contact in tripped position withstands 9g for 11 ms. Vibration resistance per IEC 60068-2-27: 1–6 Hz at 15 mm amplitude, 6–500 Hz at 20 m/s², 10 cycles per axis.","metaTitle":"Siemens 3RB3026-1VB0 SIRIUS Solid-State Overload Relay, Clas","metaDescription":"Siemens 3RB3026-1VB0 SIRIUS solid-state overload relay, size S0, 40 A thermal current, Trip Class 10E. Current lifecycle stage. 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":"1 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 10E","Rated Value":"690 V","During Storage":"-40 ... +80 °C","Thermal Current":"40 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":"40 A","at 600 V rated value":"40 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":"40 A","for AC motors at 500 V at 50 Hz":"7.5 ... 22 kW","for AC motors at 690 V at 50 Hz":"11 ... 37 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: 80 A, J: 100 A","Display Version For Switching Status":"Slide switch","Surge Voltage Resistance Rated Value":"6 kV","With Type Of Coordination 1 Required":"gG: 125 A, J: 150 A","at AWG cables for auxiliary contacts":"1x (20 ... 14), 2x (20 ... 14)","for 3-phase motors at 400 V at 50 Hz":"5.5 ... 18.5 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","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":"40 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":"3 W","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"10 ... 40 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=436217&mlfb=3RB3026-1VB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RB3026-1VB0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RB3026-1VB0 and get a price?","answer":"This part is 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 3RB3026-1VB0?","answer":"The note indicates the integrated auxiliary switch signals the tripped state — it closes or opens when the relay has tripped, not as a pre-alarm."},{"question":"What is the depth of 3RB3026-1VB0?","answer":"The depth is 84 mm."},{"question":"Will 3RB3026-1VB0 drop into a panel specified for 3RU2116-1FC1 without rewiring?","answer":"The 3RB3026-1VB0 is a solid-state overload relay in size S0 with contactor mounting, while 3RU2116-1FC1 is a thermal overload relay. Both are size S0 and mount to the same SIRIUS contactor footprint, but the wiring and auxiliary contact arrangement differ — verify the terminal assignments before direct swap."},{"question":"What compliance documentation does Siemens provide for 3RB3026-1VB0?","answer":"The relay has a substance prohibition date of October 1, 2009, confirming RoHS compliance. Standard Siemens SIRIUS documentation includes the declaration of conformity and product certificate."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RB3026-1VB0","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/3RB3026-1VB0 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}}