{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV2142-4RA10","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV2142-4RA10","canonicalUrl":"https://aoctrl.com/siemens/3RV2142-4RA10","factsUrl":"https://aoctrl.com/api/mcp/products/3RV2142-4RA10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RV2142-4RA10 motor protection circuit breaker, 84 A rated current, 50 kA breaking capacity at 400 V AC, CLASS 10 trip class, screw-type terminals, for 35 mm DIN rail.","salesMarkdown":"It is rated for a continuous current of 84 A at 400 V and 480/600 V, with a breaking capacity of 50 kA at 400 V AC — sufficient for most industrial distribution panels. Dimensions are 90 mm wide, 165 mm high, 176 mm deep — a standard three-module-wide footprint on the rail. The screw-type terminals on the main circuit accept 2× (2.5–16 mm²) solid or 2× (2.5–50 mm²) stranded, with a single conductor up to 70 mm² stranded. ## Breaking capacity and voltage ratings Breaking capacity varies by voltage: 100 kA at 240 V, 50 kA at 400 V, 5 kA at 500 V, and 3 kA at 690 V. The 84 A rated current holds at both 480 V and 600 V. Motor horsepower ratings are provided for common North American voltages: 15 hp at 230 V, 30 hp at 220/230 V, 60 hp at 460/480 V, and 75 hp at 575/600 V. No end-of-life notification or successor part is recorded. ## Environmental limits Mounting position is any orientation. Maximum switching frequency at AC-3 and AC-3e duty is 15 operations per hour.","metaTitle":"Siemens 3RV2142-4RA10 SIRIUS Motor Protection Circuit Breake","metaDescription":"Siemens 3RV2142-4RA10 SIRIUS motor protection circuit breaker, 84 A rated, 50 kA breaking capacity at 400 V, CLASS 10 trip, screw terminals, DIN rail mount. Sourced to order agains","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Protection Circuit Breakers (MPCB)"],"specifications":{"Note":"1","Depth":"176 mm","Solid":"2x (2.5 ... 16 mm²)","Width":"90 mm","title":"3RV2142-4RA10","Height":"165 mm","Upwards":"150 mm","Forwards":"0 mm","Backwards":"0 mm","Downwards":"150 mm","Trip Class":"CLASS 10","At The Side":"30 mm","Rated Value":"20 ... 690 V","description":"Circuit breaker size S3 for motor protection CLASS 10 with overload relay function A-release 65...84 A N-release 1170 A screw terminal Increased switching capacity 100 kA","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 (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":"84 A","at 500 V rated value":"5 kA","at 600 V rated value":"84 A","at 690 V rated value":"3 kA","Design Of The Product":"For motor protection with overload relay function","Ground Fault Detection":"No","Phase Failure Detection":"Yes","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":"34 W","at AC-3 at 400 V rated value":"84 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":"84 A","Design Of The Overload Release":"thermal","Operating Frequency Rated Value":"50 ... 60 Hz","Operational Current Rated Value":"84 A","Design Of The Short-Circuit Trip":"magnetic","For Auxiliary And Control Circuit":"screw-type terminals","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 AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14)","Of The Auxiliary And Control Contacts":"M3","at AC in hot operating state per pole":"11.3 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 ... 1.5 mm²), 2x (0.75 ... 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 %","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 (Operating Cycles) Typical":"25 000","For Auxiliary Contacts With Screw-Type Terminals":"0.8 ... 1.2 N·m","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":"1 170 A","insulation voltage with degree of pollution 3 at AC rated value":"1 000 V","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"65 ... 84 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$236.22","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/d6875b9ba281f1ae870d4439b78ecbee.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=629991&mlfb=3RV2142-4RA10"},"ai":{"faq":[{"question":"What is the breaking capacity of 3RV2142-4RA10 at 400 V?","answer":"50 kA at 400 V AC. At 240 V it is 100 kA, at 500 V it is 5 kA, and at 690 V it is 3 kA."},{"question":"What trip class is the 3RV2142-4RA10?","answer":"CLASS 10, meaning it will trip within 10 seconds at 7.2× rated current, suitable for standard induction motor starting."},{"question":"Where can I buy 3RV2142-4RA10?","answer":"This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"Will 3RV2142-4RA10 drop into a panel specified around 3RV2021-4NA25?","answer":"Both are Siemens SIRIUS motor protection breakers on the same 35 mm DIN rail platform, but the 3RV2142-4RA10 is a larger frame (90 mm wide vs the 3RV2021 series 45 mm width) with higher current rating (84 A vs lower). Panel cutouts and wiring will need rework; they are not drop-in interchangeable."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV2142-4RA10","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/3RV2142-4RA10 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}}