{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RB3026-1RE0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RB3026-1RE0","canonicalUrl":"https://aoctrl.com/siemens/3RB3026-1RE0","factsUrl":"https://aoctrl.com/api/mcp/products/3RB3026-1RE0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS solid-state overload relay, 3RB3026-1RE0, Size S0, 0.4 A thermal current, Trip Class 10E, spring-loaded terminals, contactor-mount.","salesMarkdown":"The Siemens 3RB3026-1RE0 is a SIRIUS solid-state overload relay in Size S0, rated for a thermal current of 0.4 A at up to 690 V. Spring-loaded terminals on the main circuit accept 1× 10 mm² stranded or 2× 0.25–1.5 mm² solid/stranded — no screw torque checks, just strip and insert. Mounting is direct onto a contactor, any orientation. The 45 mm width and 85 mm depth keep panel layout tight — it tucks into a Size S0 starter assembly without stealing extra DIN rail. The integrated auxiliary switch on the 3RB3026-1RE0 signals the tripped state via a dedicated contact. Its switching capacity varies with voltage: 2 A at 24 V, 4 A at 120 V, 3 A at 230 V, and 0.11 A at 220 V DC. At 24 V DC it easily drives a PLC digital input or a relay coil; at higher AC voltages the 3–4 A rating handles panel indication lamps or contactor hold-in circuits without an interposing relay. The note \"for message 'tripped'\" confirms this contact changes state only when the overload has operated — it's not a status mirror of the load current. Use it for a fault annunciator or to cut power to the drive enable, not for load monitoring. The 3RB3026-1RE0 carries a lifecycle stage of \"current\" — Siemens still lists it as an active catalog number. No end-of-life or last-time-buy notice is on record. ## Deployment context This relay mounts directly onto a contactor rather than a DIN rail, so it stays with the starter assembly. The spring-loaded terminals and any-position mounting simplify panel wiring — no need to orient the relay for gravity drain or terminal access. Shock-rated to 15g / 11 ms and vibration-tested per 1–6 Hz / 15 mm and 6–500 Hz / 20 m/s², it holds up in applications near punch presses or conveyor drives.","metaTitle":"Siemens 3RB3026-1RE0 SIRIUS solid-state overload relay, Clas","metaDescription":"Siemens 3RB3026-1RE0 SIRIUS solid-state overload relay, Size S0, 0.4 A thermal current, Trip Class 10E, spring-loaded terminals, contactor-mount. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Overload Relays"],"specifications":{"Note":"for message \"tripped\"","Depth":"85 mm","Solid":"2x (0.25 ... 1.5 mm²)","Width":"45 mm","Height":"109 mm","at 24 V":"2 A","at 60 V":"0.55 A","Per Pole":"0.03 W","Stranded":"1x 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":"0.4 A","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","During Transport":"-40 ... +80 °C","Fastening Method":"Contactor mounting","Shock Resistance":"15g / 11 ms","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":"0.4 A","at 600 V rated value":"0.4 A","Size Of Overload Relay":"S0","For Main Current Circuit":"spring-loaded 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":"0.4 A","for AC motors at 500 V at 50 Hz":"0.04 ... 0.12 kW","for AC motors at 690 V at 50 Hz":"0.06 ... 0.18 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: 4 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: 3 A","for 3-phase motors at 400 V at 50 Hz":"0.04 ... 0.09 kW","for AWG cables for auxiliary contacts":"1x (24 ... 16), 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)","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":"0.4 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":"0.1 ... 0.4 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/c8985b03f5b720199888bfcf6c045ffd.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=462088&mlfb=3RB3026-1RE0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RB3026-1RE0/alternatives.json"},"ai":{"faq":[{"question":"What is 3RB3026-1RE0's listed note (for message \"tripped\") on this component line?","answer":"The note indicates the integrated auxiliary contact is dedicated to signaling the tripped state — it closes or opens only when the overload relay has operated, not for load monitoring."},{"question":"What is 3RB3026-1RE0's listed depth (85 mm) on this component line?","answer":"The depth is 85 mm, which together with the 45 mm width and 109 mm height fits the S0 contactor-mount footprint."},{"question":"Will 3RB3026-1RE0 drop into a panel that was specified around 3RU2116-1FC1 without rewiring?","answer":"The 3RB3026-1RE0 and 3RU2116-1FC1 are different families — the 3RB is a solid-state electronic relay, while the 3RU is a bimetallic thermal relay. Both mount to Size S0 contactors, so the mechanical fit is the same, but the wiring (spring-loaded vs screw terminals) and the trip characteristic (electronic vs bimetal) differ. Verify the control circuit voltage and the auxiliary contact configuration before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RB3026-1RE0","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/3RB3026-1RE0 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}}