{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV1342-4HC10","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV1342-4HC10","canonicalUrl":"https://aoctrl.com/siemens/3RV1342-4HC10","factsUrl":"https://aoctrl.com/api/mcp/products/3RV1342-4HC10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RV1342-4HC10 circuit breaker for starter combinations, 3-pole, 50 A rated continuous current, 100 kA breaking capacity at 400 V AC, screw-type terminals, DIN rail mount.","salesMarkdown":"## SIRIUS 3RV1342-4HC10 — Motor Circuit Breaker for Starter Combinations Breaking capacity is 100 kA at both 240 V and 400 V AC, dropping to 15 kA at 500 V and 10 kA at 690 V. That 100 kA figure at 400 V means this breaker can safely interrupt a fault current up to 100,000 amps without upstream devices needing to clear it — critical for high-fault panels where the available short-circuit current exceeds typical 25 kA or 50 kA ratings. The 3-pole design is intended for three-phase motor loads. The absence of integrated ground-fault or phase-failure detection means those functions must be handled by an external relay or the upstream motor starter — this is standard for a motor circuit protector in a starter combination. Any mounting position is permitted. Zero clearance required at the back or sides, so it can be packed tightly on the rail — useful when panel space is at a premium. Dimensions are 70 mm wide, 165 mm high, 174 mm deep. Main circuit terminals are screw-type box terminals accepting solid conductors 2x (2.5 … 16 mm²) or stranded 2x (10 … 50 mm²) and 1x (10 … 70 mm²). AWG equivalents for main contacts are 2x (10 … 1) and 1x (10 … 2). Auxiliary and control circuit terminals are also screw-type. The box terminal design provides a reliable connection for higher-current motor circuits. IP20 protection on the front provides finger-safe touch protection. ## Electrical Performance and Operating Conditions Power dissipation in hot operating state is 27 W total, 9 W per pole. Operating frequency at AC-3 duty is limited to 15 operations per hour maximum, so this breaker is sized for motor starting duty cycles, not high-speed switching. Shock resistance is 25 g for 11 ms. Surge voltage resistance rated at 6,000 V. The product extension for auxiliary switches is supported, meaning you can add auxiliary contact blocks for status feedback to the PLC or for electrical interlocking. This is standard for motor circuit breakers used in starter combinations. RoHS compliance date is July 1, 2006, meaning the design meets the EU RoHS directive for restricted substances. No other compliance marks (UL, CSA, CE) are listed in the evidence, but the SIRIUS series typically carries these approvals — verify the specific certification markings on the unit for your jurisdiction.","metaTitle":"Siemens 3RV1342-4HC10 SIRIUS Circuit Breaker, 50A, 100kA @ 4","metaDescription":"Siemens 3RV1342-4HC10 SIRIUS circuit breaker for starter combinations. Rated 50A continuous, 100kA breaking capacity at 400V AC. Active production, sourced to order. Screw terminal","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Motor Protection Circuit Breakers (MPCB)"],"specifications":{"Depth":"174 mm","Solid":"2x (2.5 ... 16 mm²)","Width":"70 mm","Height":"165 mm","Stranded":"2x (10 ... 50 mm²), 1x (10 ... 70 mm²)","Backwards":"0 mm","At The Side":"0 mm","Rated Value":"690 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 standard mounting rail according to DIN EN 50022","Shock Resistance":"25g / 11 ms","Mounting Position":"any","Product Brand Name":"SIRIUS","Product Designation":"circuit breaker","at 400 V rated value":"22 kW","Design Of The Product":"for starter combinations","Ground Fault Detection":"No","Phase Failure Detection":"No","For Main Current Circuit":"screw-type terminals with box terminals","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":"15 kA","at AC at 690 V rated value":"10 kA","at AC-3 rated value maximum":"690 V","at AC in hot operating state":"27 W","Substance Prohibitance (Date)":"07/01/2006","Continuous Current Rated Value":"50 A","at AWG cables for main contacts":"2x (10 ... 1), 1x (10 ... 2)","protection class IP on the front":"IP20","For Auxiliary And Control Circuit":"screw-type terminals","Product Extension Auxiliary Switch":"Yes","operating frequency at AC-3 maximum":"15 1/h","Surge Voltage Resistance Rated Value":"6 000 V","at AC in hot operating state per pole":"9 W","Finely Stranded With Core End Processing":"2x (2.5 ... 35 mm²), 2.5 ... 50 mm²","Number Of Poles For Main Current Circuit":"3","Touch Protection Against Electrical Shock":"finger-safe","number of CO contacts for auxiliary contacts":"0","operational current at AC-3 at 400 V rated value":"50 A","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Design Of The Overcurrent Release And Short-Circuit Release":"magnetic","Arrangement Of Electrical Connectors For Main Current Circuit":"front side","Product Component Removable Terminal For Auxiliary And Control Circuit":"No","Mechanical Service Life (Switching Cycles) Of The Main Contacts Typical":"50 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=75743&mlfb=3RV1342-4HC10","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV1342-4HC10/alternatives.json"},"ai":{"faq":[{"question":"What conductor sizes does the 3RV1342-4HC10 accept?","answer":"Solid conductors: 2x (2.5 … 16 mm²). Stranded: 2x (10 … 50 mm²) and 1x (10 … 70 mm²). AWG equivalents for main contacts: 2x (10 … 1) and 1x (10 … 2)."},{"question":"What compliance documentation is available for 3RV1342-4HC10?","answer":"RoHS compliance date is July 1, 2006. The SIRIUS series typically carries UL, CSA, and CE approvals, but specific certification markings should be verified on the unit for your jurisdiction."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV1342-4HC10","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/3RV1342-4HC10 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}}