{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RB2065-1MC2","brand":"Siemens","brandSlug":"siemens","productSlug":"3RB2065-1MC2","canonicalUrl":"https://aoctrl.com/siemens/3RB2065-1MC2","factsUrl":"https://aoctrl.com/api/mcp/products/3RB2065-1MC2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS solid-state overload relay, 3RB2065-1MC2, CLASS 10E trip, 0.05 W dissipation, ATEX Ex II (2) GD, IP00, contactor-mount or stand-alone.","salesMarkdown":"The Siemens 3RB2065-1MC2 is a SIRIUS solid-state overload relay — the electronic equivalent of a bimetal relay, but with no moving thermal elements to drift or fatigue. That 0.05 W dissipation per pole (at AC in hot operating state) keeps the panel thermal budget low — relevant when multiple relays are packed on a DIN rail or inside a small enclosure. Rated for contactor mounting or stand-alone installation, it fits directly under a SIRIUS contactor or can be panel-mounted with busbar connections for the main circuit. This overload relay protects three-phase AC motors in industrial automation — conveyors, pumps, fans, compressors — where a solid-state design is preferred over a bimetallic one for accuracy and repeatability. The ATEX Ex II (2) GD certification (PTB 06 ATEX 3001) means it can be installed in the safe area but is approved to protect motors located in Zone 1/21 gas or dust hazardous areas, as long as the associated contactor and wiring meet the installation rules. ## Integration notes Dimensions are 147 mm high, 145 mm wide, 156 mm deep — fits a standard 145 mm-wide DIN-rail footprint. The solid and stranded wire range accepts 0.5 … 4 mm² solid or 0.5 … 2.5 mm² finely stranded with ferrule, with dual-wire capability for daisy-chaining.","metaTitle":"Siemens 3RB2065-1MC2 SIRIUS solid-state overload relay, CLAS","metaDescription":"Siemens 3RB2065-1MC2 SIRIUS solid-state overload relay, CLASS 10E, 0.05 W dissipation, ATEX Ex II (2) GD, IP00, active production.","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 10E","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":"160 ... 630 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=222826&mlfb=3RB2065-1MC2","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RB2065-1MC2/alternatives.json"},"ai":{"faq":[{"question":"What does CLASS 10E mean for motor protection?","answer":"CLASS 10E means the relay will trip within 10 seconds at 7.2× the current setting. This matches the thermal withstand of standard IEC induction motors during a locked-rotor or stall condition, providing coordinated protection without nuisance tripping on normal starts."},{"question":"What approvals does this overload relay carry?","answer":"It carries ATEX Ex II (2) GD certification (PTB 06 ATEX 3001) for use in potentially explosive atmospheres, and its surge immunity is rated at 8 kV. EMC burst immunity meets IEC 61000-4-4 severity level 3 (2 kV power ports, 1 kV signal ports)."},{"question":"What wire sizes does it accept?","answer":"Solid wire: 0.5 … 4 mm² (single or 2× 0.5 … 2.5 mm²). Finely stranded with ferrule: 0.5 … 2.5 mm² (single or 2× 0.5 … 1.5 mm²)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RB2065-1MC2","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/3RB2065-1MC2 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}}