{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV2742-5LD10","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV2742-5LD10","canonicalUrl":"https://aoctrl.com/siemens/3RV2742-5LD10","factsUrl":"https://aoctrl.com/api/mcp/products/3RV2742-5LD10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS circuit breaker, 3RV2742-5LD10, size S3, rated 60 A, 100 kA at 240 V AC, UL 489 design, screw and snap-on DIN rail mount.","salesMarkdown":"The Siemens 3RV2742-5LD10 is a SIRIUS circuit breaker in size S3, designed for system protection per UL 489 and CSA C22.2 No. 5. It carries a rated operational current of 60 A and a breaking capacity of 100 kA at 240 V AC, 50 kA at 400 V AC — figures that tell you it can safely interrupt fault currents up to those levels without cascading upstream. The thermal overload release handles sustained overcurrent; the magnetic short-circuit trip clears fast faults. The 60 A rated current sets the continuous load it can carry in a 40 °C ambient — size your motor or feeder branch accordingly. The 100 kA at 240 V AC and 50 kA at 400 V AC are the interrupting ratings; at 400 V the breaker clears 100 kA under AC conditions, so it handles high-fault utility feeds. The 23.5 W power dissipation at AC in hot operating state matters for enclosure thermal management — if you pack several in a sealed panel, that heat adds up. Terminal capacity: main contacts accept 2x (2.5... 16 mm²) solid or 1x (10... 70 mm²) stranded, with M8 screw terminals and a 4 mm hex socket driver. Auxiliary switch extension is supported. Dimensions: 70 mm wide, 170 mm high, 176 mm deep. Clearance: 70 mm above and below, 10 mm at the sides. That 176 mm depth is the full body — check your enclosure depth before committing. Relative humidity 10 to 95 % during operation.","metaTitle":"Siemens 3RV2742-5LD10 SIRIUS Circuit Breaker, 60 A, 100 kA","metaDescription":"Siemens 3RV2742-5LD10 SIRIUS circuit breaker, 60 A rated current, 100 kA breaking capacity at 240 V AC. UL 489 design, screw and snap-on DIN rail mount. Current production. Availab","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":"170 mm","Upwards":"70 mm","Downwards":"70 mm","At The Side":"10 mm","Rated Value":"20 ... 600 V","During Storage":"-50 ... +80 °C","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","For Main Contacts":"M8","Mounting Position":"any","Solid Or Stranded":"2x (2,5 ... 50 mm²), 1x (10 ... 70 mm²)","Product Brand Name":"SIRIUS","Product Designation":"Circuit breaker","at 240 V rated value":"100 kA","at 400 V rated value":"50 kA","Design Of The Product":"For system protection according to UL 489/CSA C22.2 No. 5","Ground Fault Detection":"No","Phase Failure Detection":"No","For Main Current Circuit":"screw-type terminals","at AC at 240 V rated value":"100 kA","at AC at 400 V rated value":"100 kA","Design Of Screwdriver Shaft":"Hexagonal socket","Size Of The Circuit-Breaker":"S3","Size Of The Screwdriver Tip":"4 mm","Of The Main Contacts Typical":"25 000","at AC in hot operating state":"23.5 W","Of Auxiliary Contacts Typical":"25 000","Substance Prohibitance (Date)":"03/01/2017","Design Of The Overload Release":"thermal","Operating Frequency Rated Value":"50 ... 60 Hz","Operational Current Rated Value":"60 A","at AWG cables for main contacts":"6","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":"8 kV","at AC in hot operating state per pole":"7.8 W","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 FIT","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":"25 g / 11 ms (rectangular impulse and sine pulse)","Electrical Endurance (Operating Cycles) Typical":"25 000","at 480 AC Y/277 V according to UL 489 rated value":"65 kA","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":"780 A","insulation voltage with degree of pollution 3 at AC rated value":"1 000 V","at AWG cables for main contacts for box terminal using the front clamping point":"6"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$213.36","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=630016&mlfb=3RV2742-5LD10","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV2742-5LD10/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3RV2742-5LD10 at 400 V?","answer":"At 400 V AC, the breaking capacity is 100 kA. At 240 V AC it is also 100 kA."},{"question":"What is the rated current of 3RV2742-5LD10?","answer":"The rated operational current is 60 A."},{"question":"What is the depth of 3RV2742-5LD10?","answer":"The depth is 176 mm."},{"question":"What terminal capacity does the main circuit have?","answer":"Main contacts accept 2x (2.5... 16 mm²) solid or 1x (10... 70 mm²) stranded, with M8 screw terminals."},{"question":"Where can I buy 3RV2742-5LD10?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV2742-5LD10","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/3RV2742-5LD10 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}}