{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RB2026-2PD0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RB2026-2PD0","canonicalUrl":"https://aoctrl.com/siemens/3RB2026-2PD0","factsUrl":"https://aoctrl.com/api/mcp/products/3RB2026-2PD0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS solid-state overload relay, 3RB2026-2PD0, CLASS 20E, 3 poles, contactor mounting, screw-type main terminals, spring-loaded aux terminals, ATEX Ex II (2) GD.","salesMarkdown":"The Siemens 3RB2026-2PD0 is a SIRIUS solid-state overload relay, CLASS 20E, for 3-pole motor circuits. It mounts directly onto a contactor via the contactor mounting fastening method, saving DIN-rail space in the panel. The CLASS 20E trip class means it allows a longer start-up time for high-inertia loads like fans or conveyors before tripping, compared to a standard CLASS 10 relay. The main current circuit uses screw-type terminals rated for 2x (14... 10) AWG, while the auxiliary and control circuit uses spring-loaded terminals rated for 2x (24... 16) AWG. That split means power wiring gets a secure screw clamp, while control wiring can be terminated faster with spring-cage insertion — no screwdriver needed for the aux side. Switching capacity varies by voltage: at 24 V it handles 2 A, at 120 V it handles 4 A, and at 230 V it handles 3 A. The 120 V figure (4 A) is the highest switching current across the listed voltages, so if your control voltage is 120 VAC, you get the most contact rating. At 220 V it drops to 0.11 A — a significant reduction, meaning at higher control voltages the relay is best used for signal-level switching, not power loads. Surge voltage resistance is rated at 6 kV, and burst immunity meets IEC 61000-4-4 severity 3 (2 kV on power ports, 1 kV on signal ports). The ATEX approval (PTB 06 ATEX 3001 Ex II (2) GD) certifies it for use in potentially explosive atmospheres — gas and dust — as an associated apparatus. That means it can be installed in the safe area and protect motor circuits in Zone 1 or Zone 21 locations, a common requirement in chemical, oil & gas, and grain handling plants. ## Mechanical integration That means it can be butted directly against adjacent devices in a row, saving panel space — only the side gap of 6 mm matters for heat dissipation and wiring access. Storage and transport range is -40 to +80 °C. The per-pole power dissipation is 0.02 W — negligible heat contribution inside the enclosure. Substance prohibitance date per RoHS-like requirements is 07/01/2006. The product brand is SIRIUS, and the product designation is solid-state overload relay. No auxiliary CO contacts are provided (0 CO contacts) — any auxiliary signaling requires an external add-on module.","metaTitle":"Siemens 3RB2026-2PD0 SIRIUS solid-state overload relay, CLAS","metaDescription":"Siemens 3RB2026-2PD0 SIRIUS solid-state overload relay, CLASS 20E, 3 poles, ATEX Ex II (2) GD. Current production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Overload Relays"],"specifications":{"Depth":"75 mm","Solid":"2x (0.25 ... 1.5 mm²)","Width":"45 mm","Height":"73 mm","Upwards":"0 mm","at 24 V":"2 A","at 60 V":"0.55 A","Forwards":"0 mm","Per Pole":"0.02 W","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","Backwards":"0 mm","Downwards":"0 mm","Trip Class":"CLASS 20E","At The Side":"6 mm","During Storage":"-40 ... +80 °C","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","Product Brand Name":"SIRIUS","Type Of Protection":"PTB 06 ATEX 3001 Ex II (2) GD","Product Designation":"solid-state overload relay","For Main Current Circuit":"screw-type terminals","Substance Prohibitance (Date)":"07/01/2006","at AWG cables for main contacts":"2x (14 ... 10)","For Auxiliary And Control Circuit":"spring-loaded terminals","Relative Humidity During Operation":"100 %","Surge Voltage Resistance Rated Value":"6 kV","at AWG cables for auxiliary contacts":"2x (24 ... 16)","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","number of CO contacts for auxiliary contacts":"0","number of NC contacts for auxiliary contacts":"1","number of NO contacts for auxiliary contacts":"1","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","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/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":"0.05 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":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=280671&mlfb=3RB2026-2PD0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RB2026-2PD0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RB2026-2PD0 and how do I get a price?","answer":"The 3RB2026-2PD0 is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What is the trip class of 3RB2026-2PD0?","answer":"The trip class is CLASS 20E, meaning it allows a longer overload duration before tripping — suitable for high-inertia motor loads like fans, crushers, and conveyors that need extended start times."},{"question":"What compliance documentation does this brand provide for 3RB2026-2PD0?","answer":"The part carries ATEX approval (PTB 06 ATEX 3001 Ex II (2) GD) for explosive atmospheres, RoHS substance prohibitance dated 07/01/2006, and IEC burst immunity per IEC 61000-4-4 severity 3. Standard Siemens SIRIUS documentation includes a declaration of conformity and technical data sheet."},{"question":"Will 3RB2026-2PD0 drop into a panel that was specified around 3RT1016-1AR11 without rewiring?","answer":"The 3RB2026-2PD0 uses contactor mounting and shares the same 45 mm width as the SIRIUS contactor family, so it mechanically fits the same DIN-rail or screw-panel footprint. However, the 3RT1016-1AR11 is a contactor, not an overload relay — the 3RB2026-2PD0 is the overload protection add-on that mounts onto a contactor. If the original panel used a 3RT1016 contactor with a separate overload relay, this part is the direct drop-in replacement for the overload function. Rewiring depends on whether the original used screw or spring terminals; the 3RB2026-2PD0 has screw main terminals and spring aux"}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RB2026-2PD0","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/3RB2026-2PD0 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}}