{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV2742-5AD10","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV2742-5AD10","canonicalUrl":"https://aoctrl.com/siemens/3RV2742-5AD10","factsUrl":"https://aoctrl.com/api/mcp/products/3RV2742-5AD10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS circuit breaker, 3RV2742-5AD10, S3 frame, 10 A rated operational current, 100 kA breaking capacity at 240 V AC, screw-type terminals, for system protection per UL 489/CSA C22.2 No. 5.","salesMarkdown":"The Siemens 3RV2742-5AD10 is a SIRIUS circuit breaker in the S3 frame, designed for system protection per UL 489 and CSA C22.2 No. 5. It carries a rated operational current of 10 A and operates at 50/60 Hz with a rated voltage range of 20 to 600 V. The overload release is thermal; the short-circuit trip is magnetic. Breaking capacity reaches 100 kA at 240 V AC and 50 kA at 400 V AC (with an alternative rating of 100 kA at 400 V AC also listed). The S3 frame size and M8 main-contact terminals handle solid or stranded conductors up to 70 mm² (single) or 50 mm² (double). Screw-type terminals with a hexagonal socket (4 mm tip) are standard. The 100 kA breaking capacity at 240 V AC and 50 kA at 400 V AC (with a second entry showing 100 kA at 400 V AC) means this breaker can safely interrupt fault currents up to those levels without upstream devices needing to clear first. The thermal overload release (rated 10 A) protects against sustained overcurrents; the magnetic short-circuit trip handles instantaneous faults. The 25 000 typical mechanical/electrical cycles for main and auxiliary contacts give a baseline for maintenance scheduling in high-cycle applications like conveyor or pump control. ## Mounting and integration — DIN-rail fit and clearances Dimensions: 70 mm wide, 170 mm high, 176 mm deep. Required clearances: 70 mm above, 70 mm below, 10 mm to the side. These clearances are for heat dissipation and arc venting — respect them in a crowded enclosure. Terminals accept solid or stranded copper: 2x (2.5 to 16 mm²) for the control circuit, and up to 1x (10 to 70 mm²) or 2x (2.5 to 50 mm²) for the main circuit. AWG 14 solid fits the front clamping point only. The hexagonal socket screwdriver tip is 4 mm. Relative humidity during operation: 10 to 95 %. The substance prohibition date (RoHS/REACH compliance) is March 1, 2017. No ground-fault or phase-failure detection built in — those functions require an external module or a different breaker variant.","metaTitle":"Siemens 3RV2742-5AD10 SIRIUS Circuit Breaker, 10 A, 100 kA a","metaDescription":"Siemens 3RV2742-5AD10 SIRIUS circuit breaker, 10 A rated current, 100 kA breaking capacity at 240 V AC. UL 489/CSA system protection. S3 frame, screw terminals. Current production.","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","title":"3RV2742-5AD10","Height":"170 mm","Upwards":"70 mm","Downwards":"70 mm","At The Side":"10 mm","Rated Value":"20 ... 600 V","description":"Circuit breaker size S3 for system protection with approval circuit breaker UL 489, CSA C22.2 No.5-02 A-release 10 A N-release 150 A screw terminal","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":"10 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":"10 A","at AWG cables for main contacts":"14 solid - only front clamping point","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":"3.3 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","at 480 V AC according to UL 489 rated value":"65 kA","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":"150 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":"14 solid - only front clamping point"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/e2ddffe8cd0b47c311091c38dc3516d1.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=630007&mlfb=3RV2742-5AD10"},"ai":{"faq":[{"question":"What is the breaking capacity of 3RV2742-5AD10 at 240 V and 400 V?","answer":"At 240 V AC the breaking capacity is 100 kA; at 400 V AC it is 50 kA (with an additional entry showing 100 kA at 400 V AC)."},{"question":"What compliance documentation does the 3RV2742-5AD10 come with?","answer":"The breaker is designed per UL 489 and CSA C22.2 No. 5, and the substance prohibition (RoHS/REACH) compliance date is March 1, 2017."},{"question":"Will 3RV2742-5AD10 drop into a panel that was specified around 3RV2011-0BA20 without rewiring?","answer":"The 3RV2742-5AD10 is an S3-frame breaker with M8 terminals and a 70 mm width; the 3RV2011-0BA20 is a smaller S00-frame device. They are not mechanically interchangeable without panel modifications — verify the mounting footprint and terminal clearances before substituting."},{"question":"Where can I buy 3RV2742-5AD10 and how is it quoted?","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 price and lead time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV2742-5AD10","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/3RV2742-5AD10 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}}