{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RB2035-2QW1","brand":"Siemens","brandSlug":"siemens","productSlug":"3RB2035-2QW1","canonicalUrl":"https://aoctrl.com/siemens/3RB2035-2QW1","factsUrl":"https://aoctrl.com/api/mcp/products/3RB2035-2QW1","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS solid-state overload relay, 3RB2035-2QW1, CLASS 20E, ATEX Ex II (2) GD, IP20 front, stand-alone installation.","salesMarkdown":"The Siemens 3RB2035-2QW1 is a SIRIUS solid-state overload relay. Trip class is CLASS 20E, rated for AC-3 motor switching up to 690 V, and carries ATEX Ex II (2) GD approval. Mounting is stand-alone installation — no DIN rail clip, no snap-on. That means you bolt it directly to a panel backplate or machine frame. The terminal block accepts solid conductors from 0.5 to 4 mm², or two conductors per clamp (2x 0.5 to 2.5 mm²). For finely stranded wire with ferrules, the range drops to 0.5–2.5 mm² single, 2x 0.5–1.5 mm² double. Environmental tolerance is wide: operate from -25 to +60 °C, store or ship from -40 to +80 °C. Shock rated at 15g for 11 ms — fine for most industrial machinery but not for high-vibration rotating equipment without additional damping. Humidity tolerance is 100% RH, so condensation inside the enclosure won't cause false trips. The ATEX certificate is PTB 06 ATEX 3001 Ex II (2) GD — that's a Group II device for gas and dust atmospheres, suitable for use with motors in Zone 1/21 and Zone 2/22 areas. EMC immunity includes burst transients at 2 kV on power ports and 1 kV on signal ports, severity level 3 per IEC 61000-4-4, and surge withstand at 6 kV. Pollution degree 3 rated for 690 V — that's the industrial environment with conductive pollution, so no special derating needed in a typical panel.","metaTitle":"Siemens 3RB2035-2QW1 SIRIUS solid-state overload relay, CLAS","metaDescription":"Siemens SIRIUS 3RB2035-2QW1 solid-state overload relay, CLASS 20E trip class, ATEX Ex II (2) GD, IP20 front, stand-alone installation. Current production — source to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Overload Relays"],"specifications":{"Depth":"109 mm","Solid":"0.5 ... 4 mm², 2x (0.5 ... 2.5 mm²)","Width":"55 mm","Height":"92 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":"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":"straight-through transformers","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","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":"S2","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":"6 ... 25 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=48110&mlfb=3RB2035-2QW1","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RB2035-2QW1/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings for this overload relay?","answer":"Trip class CLASS 20E, AC-3 rated voltage 690 V, ATEX Ex II (2) GD approved, IP20 front, stand-alone mounting. Dimensions 92 x 55 x 109 mm. Terminal accepts 0.5–4 mm² solid or 0.5–2.5 mm² stranded with ferrule."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RB2035-2QW1","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/3RB2035-2QW1 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}}