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Square D QOU350 - Molded Case Circuit Breaker 50A 3P 240V

Square D
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Square D QOU350 is a molded case circuit breaker designed for providing reliable overcurrent protection in three-phase industrial applications. It features a 50A current rating and a 240V AC voltage rating, housed within a compact 100A frame with dimensions of 102.87 mm H x 57.15 mm W x 74.93 mm D and a weight of 1.15 lb. The breaker is constructed with a thermal-magnetic trip unit for long-time and instantaneous protection, complies with CSA, IEC, and UL standards, and is typically applied in air conditioning, refrigeration, and heating equipment panels. Its slotted box lug terminals are reversible for line/load connections and accommodate wire sizes from 14 AWG to 2 AWG for aluminum or copper conductors, offering an interrupting capacity of 10kA at 240V AC.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Standard, Thermal-Magnetic Protection
  • Voltage Rating: 240V AC
  • Current Rating: 50A
  • Dimensions: 4.05 in (102.87 mm) H x 2.25 in (57.15 mm) W x 2.95 in (74.93 mm) D
  • Standards: CSA, IEC, UL Listed
  • Applications: Air Conditioning, Refrigeration Equipment, Heating Panels
  • Switch Type: Circuit Breaker
  • Configuration: Unit Mount
  • Phase: 3
  • Amperage: 50A
  • AIC Rating: 10kA @ 240V
  • Connection: Slotted Box Lug (Reversible Line and Load)
  • Poles: 3
  • Protection: Thermal Magnetic
  • Functions: Long Time and Instantaneous Trip
  • Frame Size: 100A/QOU
  • Trip Type: Thermal-Magnetic
  • Panel Type: Air Conditioning and Refrigeration Equipment, Heating
  • Breaker Type: Standard
  • MCM Size: Min. Wire Size 14 AWG, Max. Wire Size 2 AWG
  • Wire Size: AWG 14 to AWG 2 (Aluminium/Copper)
  • Certification: IEC, UL Listed
  • Family: QOU Series
  • Country of Origin: Mexico
  • Weight: 1.15 lb


Product Identification
  • UPC: 785901418986
  • GTIN: 00785901418986