{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RB2026-1QD0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RB2026-1QD0","canonicalUrl":"https://aoctrl.com/siemens/3RB2026-1QD0","factsUrl":"https://aoctrl.com/api/mcp/products/3RB2026-1QD0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RB2026-1QD0, solid-state overload relay, contactor mounting for S0 size, 3-pole, 690 V AC-3 max, Trip Class 10E, ATEX Ex II (2) GD, IP20 front, screw main terminals, spring-loaded aux/control terminals.","salesMarkdown":"The Siemens 3RB2026-1QD0 is a SIRIUS-brand solid-state overload relay (reference code F per DIN EN 81346-2) designed for contactor mounting on S0-size contactors. The solid-state sensing avoids the mechanical wear of bimetallic relays; no heater packs to swap. Mounts directly onto an S0-size Siemens contactor (no separate base required) in any position. The main power circuit uses screw-type terminals; the auxiliary and control circuit uses spring-loaded terminals — no tools needed for the control wiring, just a screwdriver for the power side. Dimensions: 45 mm wide, 73 mm high, 75 mm deep. Zero clearance allowed upwards, forwards, backwards, and downwards — only 6 mm side clearance needed. Front face is IP20 rated. Shock rated to 15g / 11 ms. Withstands electrostatic discharge at 6 kV contact / 8 kV air (IEC 61000-4-2) and operates in 100 % relative humidity. Pollution degree 3 at the rated 690 V. ## Switching capacity across voltage ranges The relay’s auxiliary contacts handle different currents depending on the control voltage: 2 A at 24 V, 0.55 A at 60 V, 0.3 A at 110 V and 125 V, 0.11 A at 220 V — and for the AC coil circuit, 4 A at 120 V and 3 A at 230 V. One NO and one NC auxiliary contact are built in. Compliance documentation includes ATEX certification (PTB 06 ATEX 3001 Ex II (2) GD), IEC 61000-4-2 ESD immunity, and pollution degree 3 per IEC 60947-1. The relay carries the DIN EN 81346-2 reference code F.","metaTitle":"Siemens 3RB2026-1QD0 SIRIUS Solid-State Overload Relay, 690","metaDescription":"Siemens 3RB2026-1QD0 SIRIUS solid-state overload relay, 690 V AC-3 max, Class 10E, ATEX Ex II (2) GD, contactor mounting for S0 size. In current production. Sourced to order agains","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Overload Relays"],"specifications":{"Depth":"75 mm","Width":"45 mm","Height":"73 mm","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 10E","At The Side":"6 mm","On The Front":"IP20","Mounting Type":"Contactor mounting","lifecycle_stage":"current","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","Ambient Temperature During Storage":"-40 ... +80 °C","Relative Humidity During Operation":"100 %","Ambient Temperature During Operation":"-25 ... +60 °C","Ambient Temperature During Transport":"-40 ... +80 °C","Surge Voltage Resistance Rated Value":"6 kV","reference code acc. to DIN EN 81346-2":"F","Number Of Poles For Main Current Circuit":"3","For Auxiliary And Control Current Circuit":"spring-loaded terminals","number of CO contacts for auxiliary contacts":"0","number of NC contacts for auxiliary contacts":"1","number of NO contacts for auxiliary contacts":"1","with degree of pollution 3 at AC rated value":"690 V","electrostatic discharge acc. to IEC 61000-4-2":"6 kV contact discharge / 8 kV air discharge","operating voltage at AC-3 rated value maximum":"690 V","Size Of Contactor Can Be Combined Company-Specific":"S0","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Type Of Connectable Conductor Cross-Sections For Main Contacts Solid":"2x (1 ... 2.5 mm²), 2x (2.5 ... 6 mm²)","Product Function Removable Terminal For Auxiliary And Control Circuit":"Yes","Type Of Connectable Conductor Cross-Sections For Auxiliary Contacts Solid":"2x (0.25 ... 1.5 mm²)","Adjustable Pick-Up Value Current Of The Current-Dependent Overload Release":"6 ... 25 A","power loss [W] for rated value of the current at AC in hot operating state":"0.05 W","type of connectable conductor cross-sections at AWG conductors for main contacts":"2x (14 ... 10)","power loss [W] for rated value of the current at AC in hot operating state per pole":"0.02 W","Design Of The Fuse Link For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 6 A","type of connectable conductor cross-sections at AWG conductors for auxiliary contacts":"2x (24 ... 16)","Type Of Connectable Conductor Cross-Sections For Main Contacts Finely Stranded With Core End Processing":"2x (1 ... 2.5 mm²), 2x (2.5 ... 6 mm²)","Type Of Connectable Conductor Cross-Sections For Auxiliary Contacts Finely Stranded With Core End Processing":"2x (0.25 ... 1.5 mm²)"}},"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=196082&mlfb=3RB2026-1QD0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RB2026-1QD0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RB2026-1QD0 and get a price?","answer":"This part 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":"Will 3RB2026-1QD0 drop into a panel specified for a 3RT1016-1BB42 contactor?","answer":"The 3RB2026-1QD0 is designed for contactor mounting on S0-size Siemens contactors. The 3RT1016-1BB42 is an S0-size contactor, so the relay mounts directly onto it without rewiring the power circuit. The auxiliary wiring may differ: the 3RB2026 uses spring-loaded control terminals, while the 3RT1016-1BB42 has screw terminals — check the terminal layout on the contactor for the control wiring."},{"question":"What compliance documentation comes with 3RB2026-1QD0?","answer":"The relay holds ATEX certification PTB 06 ATEX 3001 Ex II (2) GD for explosive atmospheres, meets IEC 61000-4-2 ESD immunity levels (6 kV contact / 8 kV air discharge), and is rated for pollution degree 3 at 690 V per IEC 60947-1."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RB2026-1QD0","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/3RB2026-1QD0 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}}