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Square D QH330 - 3-Pole Circuit Breaker 30A, 65kA @ 240V

Square D
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Square D QH330 is a three-pole molded case circuit breaker designed to provide reliable overcurrent and short-circuit protection for 240VAC three-phase industrial and commercial electrical systems. It features a 30A current rating and a 65kA interrupting capacity at 240V, utilizing a thermal-magnetic trip mechanism for both long-time delay and instantaneous protection. The compact plug-in unit measures 76 mm x 57 mm x 74 mm (HxWxD), weighs 0.83 lb, and is constructed with pressure plate terminals that accept copper or aluminum conductors from 14 AWG to 8 AWG. It is UL Listed and CSA certified for safety compliance and operates reliably across a temperature range of -25°C to 70°C (-13°F to 158°F), making it suitable for panelboards, switchboards, and motor control centers.

Key Features & Specifications
  • Type: QH Series, Standard, Thermal Magnetic Protection, Molded Case
  • Voltage Rating: 240V AC
  • Current Rating: 30A
  • Dimensions: 3.0 in (76 mm) H x 2.2 in (57 mm) W x 2.9 in (74 mm) D
  • Standards: UL Listed, CSA
  • Applications: Panelboards, Switchboards, Motor Control Centers
  • Switch Type: Circuit Breaker
  • Configuration: Plug-In
  • Temp Rating: -25°C to 70°C (-13°F to 158°F)
  • Phase: 3
  • AIC rating: 65kA @ 240V
  • Connection: Plug-In
  • Poles: 3
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous Trip
  • Breaker Type: Standard
  • Wire Size: AWG 14 to AWG 8, Copper/Aluminum
  • Certification: UL Listed, CSA
  • Terminal Connection: Pressure Plate
  • MCM Size: Min. Wire Size 14 AWG (Cu/Al) Max. Wire Size 8 AWG (Cu/Al)
  • Weight: 0.83 lb


Product Identification
  • UPC: 785901205548
  • GTIN: 00785901205548