{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV2411-1KA20","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV2411-1KA20","canonicalUrl":"https://aoctrl.com/siemens/3RV2411-1KA20","factsUrl":"https://aoctrl.com/api/mcp/products/3RV2411-1KA20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RV2411-1KA20 circuit breaker for transformer protection, 100 kA at 400 V, Trip Class 10, spring-loaded terminals, 45 mm width, 97 mm depth.","salesMarkdown":"## Transformer-protection circuit breaker with 100 kA interrupting capacity The Siemens SIRIUS 3RV2411-1KA20 is a circuit breaker designed specifically for transformer protection, carrying a 100 kA breaking capacity at 400 V — that means it can safely interrupt a fault current up to 100,000 A on the secondary side of a distribution transformer without cascading upstream. The Trip Class 10 thermal overload curve matches the inrush profile of transformers and motor starters, tripping fast enough to protect windings but not so fast that normal energization peaks nuisance-trip the line. ## Backup fuse coordination and operating limits When installed upstream of a transformer, the breaker requires backup gL/gG fuses sized according to the line voltage: 63 A at 400 V, 50 A at 500 V, and 40 A at 690 V. These fuse ratings limit the let-through energy so the breaker's internal contacts survive a bolted fault. The rated operational voltage spans 20 to 690 V, covering most low-voltage distribution systems from control transformers to 690 V industrial mains. The maximum switching frequency under AC-3 or AC-3e duty is 15 operations per hour — fine for transformer switching or infrequent motor starting, but not for high-cycling applications like a welder or press.","metaTitle":"Siemens 3RV2411-1KA20 SIRIUS Circuit Breaker, 100 kA at 400","metaDescription":"Siemens 3RV2411-1KA20 SIRIUS circuit breaker for transformer protection. 100 kA breaking capacity at 400 V, Trip Class 10, spring-loaded terminals, phase failure detection. Sourced","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Protection Circuit Breakers (MPCB)"],"specifications":{"Depth":"97 mm","Width":"45 mm","title":"3RV2411-1KA20","Height":"106 mm","Upwards":"50 mm","Forwards":"0 mm","at 400 V":"gL/gG 63 A","at 500 V":"gL/gG 50 A","at 690 V":"gL/gG 40 A","Backwards":"0 mm","Downwards":"50 mm","Trip Class":"CLASS 10","At The Side":"30 mm","Rated Value":"20 ... 690 V","description":"Circuit breaker size S00 for transformer protection A-release 9...12.5 A N-release 260 A Spring-type terminal Standard switching capacity","During Storage":"-50 ... +80 °C","at AC-3 maximum":"15 1/h","lifecycle_stage":"current","During Operation":"-20 ... +60 °C","During Transport":"-50 ... +80 °C","Fastening Method":"screw and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715","at AC-3e maximum":"15 1/h","Mounting Position":"any","Solid Or Stranded":"2x (0,5 ... 4 mm²)","Product Brand Name":"SIRIUS","Product Designation":"Circuit breaker","at 230 V rated value":"2 hp","at 240 V rated value":"100 kA","at 400 V rated value":"100 kA","at 480 V rated value":"12.5 A","at 500 V rated value":"42 kA","at 600 V rated value":"12.5 A","at 690 V rated value":"4 kA","Design Of The Product":"For transformer protection","Ground Fault Detection":"No","Phase Failure Detection":"Yes","For Main Current Circuit":"spring-loaded terminals","at 110/120 V rated value":"0.5 hp","at 200/208 V rated value":"3 hp","at 220/230 V rated value":"3 hp","at 460/480 V rated value":"8 hp","at 575/600 V rated value":"10 hp","at AC at 240 V rated value":"100 kA","at AC at 400 V rated value":"100 kA","at AC at 500 V rated value":"42 kA","at AC at 690 V rated value":"6 kA","Design Of Screwdriver Shaft":"Diameter 3 mm","Size Of The Circuit-Breaker":"S00","Size Of The Screwdriver Tip":"3,0 x 0,5 mm","at AC-3 rated value maximum":"690 V","Of The Main Contacts Typical":"100 000","at AC in hot operating state":"9.25 W","at AC-3 at 400 V rated value":"12.5 A","at AC-3e rated value maximum":"690 V","Of Auxiliary Contacts Typical":"100 000","Substance Prohibitance (Date)":"10/01/2009","at AC-3e at 400 V rated value":"12.5 A","Design Of The Overload Release":"thermal","Operating Frequency Rated Value":"50 ... 60 Hz","Operational Current Rated Value":"12.5 A","at AWG cables for main contacts":"2x (20 ... 12)","Design Of The Short-Circuit Trip":"magnetic","Product Extension Auxiliary Switch":"Yes","Relative Humidity During Operation":"10 ... 95 %","Display Version For Switching Status":"Handle","Surge Voltage Resistance Rated Value":"6 kV","at AC in hot operating state per pole":"3.1 W","With Side-By-Side Mounting At The Side":"0 mm","reference code according to IEC 81346-2":"Q","Finely Stranded With Core End Processing":"2x (0.5 ... 2.5 mm²)","Number Of Poles For Main Current Circuit":"3","Product Function Short Circuit Protection":"Yes","with low demand rate according to SN 31920":"50 FIT","Finely Stranded Without Core End Processing":"2x (0.5 ... 2.5 mm²)","with high demand rate according to SN 31920":"50 %","number of CO contacts for auxiliary contacts":"0","number of NC contacts for auxiliary contacts":"0","number of NO contacts for auxiliary contacts":"0","shock resistance according to IEC 60068-2-27":"25g / 11 ms","Electrical Endurance (Operating Cycles) Typical":"100 000","Size Of Contactor Can Be Combined Company-Specific":"S00, S0","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Arrangement Of Electrical Connectors For Main Current Circuit":"Top and bottom","Response Value Current Of Instantaneous Short-Circuit Trip Unit":"260 A","insulation voltage with degree of pollution 3 at AC rated value":"690 V","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"9 ... 12.5 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$40.64","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/a5cd0d102c8a5c6cee47355199711f07.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=133334&mlfb=3RV2411-1KA20"},"ai":{"faq":[{"question":"What is the breaking capacity of 3RV2411-1KA20 at 400 V?","answer":"100 kA at 400 V, which is sufficient for most industrial transformer secondary faults."},{"question":"What backup fuses are required for 3RV2411-1KA20?","answer":"gL/gG fuses: 63 A at 400 V, 50 A at 500 V, 40 A at 690 V."},{"question":"Where can I buy 3RV2411-1KA20 and get current pricing?","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 quote."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV2411-1KA20","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/3RV2411-1KA20 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}