{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RB2065-2GC2","brand":"Siemens","brandSlug":"siemens","productSlug":"3RB2065-2GC2","canonicalUrl":"https://aoctrl.com/siemens/3RB2065-2GC2","factsUrl":"https://aoctrl.com/api/mcp/products/3RB2065-2GC2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS solid-state overload relay, 3RB2065-2GC2, CLASS 20E, contactor-mount/standalone, ATEX Ex II (2) GD, 145 x 147 x 156 mm (WxHxD).","salesMarkdown":"It can be mounted directly to a contactor or installed standalone, giving flexibility in panel layout. The ATEX Ex II (2) GD certification means it's approved for use in potentially explosive atmospheres — gas and dust — when paired with an appropriate motor and upstream protection. CLASS 20E means the relay allows a 20-second cold-start trip time at 7.2× FLA — typical for medium-inertia loads like conveyors or crushers where a faster CLASS 10 would nuisance-trip on start-up. Shock resistance is rated at 15g / 11 ms, enough for mounting on a contactor that sees occasional vibration from switching. The auxiliary contact ratings cover the common control voltages: 2 A at 24 V, 4 A at 120 V, 3 A at 230 V — all resistive. For the signal ports, surge immunity is tested to 8 kV and burst to 2 kV on power ports (severity 3 per IEC 61000-4-4), meaning it won't false-trip on a nearby contactor or VFD switching. Mounting is contactor-mount or standalone — no DIN rail required, which saves rail space in a dense panel. The main circuit connects via busbar; the control terminals accept solid 0.5…4 mm² or 2× (0.5…2.5 mm²) fine-stranded with ferrules. Side clearance is 6 mm; zero clearance needed above, below, forward, or backward, so it can be packed tight against other components.","metaTitle":"Siemens SIRIUS 3RB2065-2GC2 solid-state overload relay, CLAS","metaDescription":"Siemens SIRIUS 3RB2065-2GC2 solid-state overload relay, CLASS 20E trip curve, ATEX Ex II (2) GD, contactor-mount or standalone. Available to order; RFQ for current pricing.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Overload Relays"],"specifications":{"Depth":"156 mm","Solid":"0.5 ... 4 mm², 2x (0.5 ... 2.5 mm²)","Width":"145 mm","Height":"147 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":"IP00","Mounting type":"Contactor mounting/stand-alone installation","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":"busbar connection","at AC-3 rated value maximum":"1 000 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","Surge voltage resistance rated value":"8 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":"1 000 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":"S10, S12","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":"55 ... 250 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=97505&mlfb=3RB2065-2GC2","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RB2065-2GC2/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source for 3RB2065-2GC2?","answer":"The 3RU2116-1FC1 is a bimetallic overload relay in the same SIRIUS family, but it uses a CLASS 10 trip curve versus the CLASS 20E of the 3RB2065-2GC2. Verify the motor start profile before substituting — the faster trip may cause nuisance trips on high-inertia loads."},{"question":"What compliance documentation does Siemens provide for 3RB2065-2GC2?","answer":"The relay carries ATEX Ex II (2) GD certification (PTB 06 ATEX 3001) for gas and dust explosive atmospheres. EMC immunity is documented per IEC 61000-4-4 (burst) and IEC 61000-4-5 (surge). Standard Siemens declarations of conformity cover CE, RoHS, and REACH."},{"question":"How do I get current pricing and availability for 3RB2065-2GC2?","answer":"Submit an RFQ through this listing. The part is sourced to order via independent distribution; pricing and lead time are confirmed at quote time based on current market conditions."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RB2065-2GC2","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/3RB2065-2GC2 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}}