{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RB2026-2PB0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RB2026-2PB0","canonicalUrl":"https://aoctrl.com/siemens/3RB2026-2PB0","factsUrl":"https://aoctrl.com/api/mcp/products/3RB2026-2PB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS solid-state overload relay, 3RB2026-2PB0, CLASS 20E, contactor mounting, ATEX Ex II (2) GD, screw terminals, 45 x 73 x 75 mm.","salesMarkdown":"The Siemens 3RB2026-2PB0 is a SIRIUS solid-state overload relay rated CLASS 20E, designed for contactor mounting. Rated for AC-3 duty up to 690 V, this relay handles the main current circuit via screw terminals accepting 0.5–4 mm² solid or 2× (0.5–2.5 mm²) stranded. The auxiliary contact block carries 2 A at 24 V, 4 A at 120 V, and 3 A at 230 V — enough for direct PLC input or contactor coil feedback on a standard 24 VDC control loop. Mounts directly onto a Siemens contactor — no DIN rail needed — saving panel width. The 45 mm wide, 73 mm tall, 75 mm deep footprint fits tight enclosures where every millimeter counts. ATEX certified PTB 06 ATEX 3001 Ex II (2) GD. IP20 front protection. Withstands 15g / 11 ms shock — rated for industrial machinery vibration. Pollution degree 3 rated at 690 V, meaning it handles conductive contamination environments typical of factory floors. EMC immunity includes 2 kV burst on power ports per IEC 61000-4-4, severity level 3. Surge voltage resistance rated 6 kV. Reference code F per DIN EN 81346-2 (protective device). ## Wiring & Integration Solid wire range 0.5–4 mm²; stranded with ferrule 2× (0.5–2.5 mm²). Strip length per standard practice — no special tooling needed. Mounting position any, with 0 mm clearance required upwards, forwards, backwards, and downwards. Side clearance 6 mm. This zero-gap on four sides means the relay can pack tight against other components without derating. Power dissipation at AC in hot operating state: 0.05 W total, 0.02 W per pole. Minimal heat output keeps enclosure temperature rise low — no forced cooling required for the relay itself.","metaTitle":"Siemens 3RB2026-2PB0 SIRIUS Solid-State Overload Relay, CLAS","metaDescription":"Siemens 3RB2026-2PB0 SIRIUS solid-state overload relay, CLASS 20E, contactor-mount, ATEX Ex II (2) GD. Sourced to order against RFQ. Current-production status confirmed.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Overload Relays"],"specifications":{"Depth":"75 mm","Solid":"0.5 ... 4 mm², 2x (0.5 ... 2.5 mm²)","Width":"45 mm","Height":"73 mm","Maximum":"2 000 m","Upwards":"0 mm","at 24 V":"2 A","at 60 V":"0.55 A","Forwards":"0 mm","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","On The Front":"IP20","Mounting type":"Contactor mounting","During Storage":"-40 ... +80 °C","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","During Transport":"-40 ... +80 °C","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 Auxiliary Contacts":"0","For Main Current Circuit":"screw-type terminals","at AC-3 rated value maximum":"690 V","at AC in hot operating state":"0.05 W","Relative humidity during operation":"100 %","due to burst acc. to IEC 61000-4-4":"2 kV (power ports), 1 kV (signal ports) corresponds to degree of severity 3","at AWG conductors for main contacts":"2x (14 ... 10)","Surge voltage resistance rated value":"6 kV","Reference code acc. to DIN EN 81346-2":"F","at AC in hot operating state per pole":"0.02 W","With Degree Of Pollution 3 Rated Value":"690 V","Finely Stranded With Core End Processing":"0.5 ... 2.5 mm², 2x (0.5 ... 1.5 mm²)","Number of poles for main current circuit":"3","at AWG conductors for auxiliary contacts":"2x (20 ... 14)","For Auxiliary And Control Current Circuit":"screw-type terminals","Number of NC contacts for auxiliary contacts":"1","Number of NO contacts for auxiliary contacts":"1","Electrostatic discharge acc. to IEC 61000-4-2":"6 kV contact discharge / 8 kV air discharge","Size of contactor can be combined company-specific":"S0","due to conductor-earth surge acc. to IEC 61000-4-5":"2 kV (line to earth) corresponds to degree of severity 3","Removable Terminal For Auxiliary And Control Circuit":"Yes","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 6 A","Adjustable pick-up 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=204123&mlfb=3RB2026-2PB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RB2026-2PB0/alternatives.json"},"ai":{"faq":[{"question":"What compliance documentation does this brand provide for 3RB2026-2PB0?","answer":"The relay carries ATEX certification PTB 06 ATEX 3001 Ex II (2) GD for hazardous-area use. EMC immunity tested to IEC 61000-4-4 severity level 3. Pollution degree 3 rated at 690 V. Standard Siemens documentation includes CE declaration and product manual."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RB2026-2PB0","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/3RB2026-2PB0 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}}