{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV2342-4KC10","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV2342-4KC10","canonicalUrl":"https://aoctrl.com/siemens/3RV2342-4KC10","factsUrl":"https://aoctrl.com/api/mcp/products/3RV2342-4KC10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RV2342-4KC10 circuit breaker for starter combinations, screw and snap-on mounting onto 35 mm DIN rail per EN 60715, 50 kA at 400 V AC, 176 x 70 x 165 mm.","salesMarkdown":"## What this breaker does in a motor branch At 240 V AC it's rated 100 kA, so in lower-voltage North American panels the fault-clearing headroom is even wider. ## Motor horsepower coverage across common voltages This breaker covers a broad motor horsepower range depending on line voltage: 7.5 hp at 110/120 V, 15 hp at 230 V, 30 hp at 220/230 V, 60 hp at 460/480 V, and 75 hp at 575/600 V. That 75 A continuous rating at 600 V lines up with the 75 hp motor curve at that voltage. Physical fit: 176 mm deep, 70 mm wide, 165 mm tall. The screw-type terminals accept 2x (2.5 to 16 mm²) solid or stranded on the main circuit, and up to 2x (2.5 to 50 mm²) or 1x (10 to 70 mm²) on the line/load side. No ground-fault or phase-failure detection built in — that's handled by the upstream supply or a separate module.","metaTitle":"Siemens 3RV2342-4KC10 SIRIUS Circuit Breaker, 50 kA at 400 V","metaDescription":"Siemens 3RV2342-4KC10 SIRIUS circuit breaker for starter combinations. 50 kA breaking capacity at 400 V AC. Screw/snap-on 35 mm DIN rail. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Protection Circuit Breakers (MPCB)"],"specifications":{"Depth":"176 mm","Solid":"2x (2.5 ... 16 mm²)","Width":"70 mm","Height":"165 mm","Upwards":"150 mm","Forwards":"0 mm","Backwards":"0 mm","Downwards":"150 mm","At The Side":"30 mm","Rated Value":"20 ... 690 V","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 standard mounting rail according to DIN EN 60715","at AC-3e maximum":"15 1/h","Mounting Position":"any","Solid Or Stranded":"2x (2,5 ... 50 mm²), 1x (10 ... 70 mm²)","Product Brand Name":"SIRIUS","Product Designation":"Circuit breaker","at 230 V rated value":"15 hp","at 240 V rated value":"100 kA","at 400 V rated value":"50 kA","at 480 V rated value":"75 A","at 500 V rated value":"5 kA","at 600 V rated value":"75 A","at 690 V rated value":"3 kA","Design Of The Product":"For starter combinations","Ground Fault Detection":"No","Phase Failure Detection":"No","For Main Current Circuit":"screw-type terminals","at 110/120 V rated value":"7.5 hp","at 200/208 V rated value":"25 hp","at 220/230 V rated value":"30 hp","at 460/480 V rated value":"60 hp","at 575/600 V rated value":"75 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":"10 kA","at AC at 690 V rated value":"6 kA","Size Of The Circuit-Breaker":"S3","at AC-3 rated value maximum":"690 V","Of The Main Contacts Typical":"25 000","at AC in hot operating state":"38 W","at AC-3 at 400 V rated value":"75 A","at AC-3e rated value maximum":"690 V","Of Auxiliary Contacts Typical":"25 000","Substance Prohibitance (Date)":"03/01/2017","at AC-3e at 400 V rated value":"75 A","Design Of The Overload Release":"thermal","Operating Frequency Rated Value":"50 ... 60 Hz","Operational Current Rated Value":"75 A","Design Of The Short-Circuit Trip":"magnetic","Product Extension Auxiliary Switch":"Yes","Relative Humidity During Operation":"10 ... 95 %","Display Version For Switching Status":"Handle","For Main Contacts For Ring Cable Lug":"4.5 ... 6 N·m","Surge Voltage Resistance Rated Value":"8 kV","at AC in hot operating state per pole":"12.7 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 (2.5 ... 35 mm²), 1x (2.5 ... 50 mm²)","Number Of Poles For Main Current Circuit":"3","Product Function Short Circuit Protection":"Yes","with low demand rate according to SN 31920":"50 %","Finely Stranded Without Core End Processing":"2x (10 ... 35 mm²), 1x (10 ... 50 mm²)","For Main Contacts With Screw-Type Terminals":"4.5 ... 6 N·m","with high demand rate according to SN 31920":"50 %","shock resistance according to IEC 60068-2-27":"25g / 11 ms Sinus","Electrical Endurance (Switching Cycles) Typical":"25 000","Size Of Contactor Can Be Combined Company-Specific":"S3","Outer Diameter Of The Usable Ring Cable Lug Maximum":"19 mm","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":"975 A","insulation voltage with degree of pollution 3 at AC rated value":"1 000 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/f0f3058782d5bb76f8d9aad6b0bceb52.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=630003&mlfb=3RV2342-4KC10","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV2342-4KC10/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3RV2342-4KC10 at 400 V?","answer":"At 400 V AC the 3RV2342-4KC10 is rated 50 kA. At 240 V AC it's rated 100 kA, and at 690 V AC it's rated 3 kA."},{"question":"Will the 3RV2342-4KC10 drop into a panel designed for 3RV2021-4NA25?","answer":"The 3RV2342-4KC10 shares the same 35 mm DIN rail mounting standard and similar screw-terminal topology, but the 3RV2021-4NA25 is a different frame size in the SIRIUS family. Verify the 70 mm width and 176 mm depth against your panel's cutout and clearance — the 3RV2342-4KC10 requires 150 mm free space above and below, which may differ from the 3RV2021 frame."},{"question":"Where can I buy the 3RV2342-4KC10 and how is it quoted?","answer":"The 3RV2342-4KC10 is sourced to order against an RFQ through independent distribution. Submit a request with quantity and target delivery window; we return a firm price and lead time at quote."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV2342-4KC10","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/3RV2342-4KC10 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}}