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Square D Q432300 - Molded Case Circuit Breaker 300A 3P (25kA AIC)

Square D
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Square D Q432300 is a molded case circuit breaker designed for providing reliable overcurrent and short-circuit protection in three-phase industrial power distribution systems. It features a 300A current rating and a 240V AC voltage rating, housed in a compact, robust enclosure measuring 279.4 mm H x 152.4 mm W x 148.34 mm D and weighing 17.97 lb. The breaker complies with industry standards for thermal-magnetic protection, offering both long-time and instantaneous trip functions with an interrupting capacity of 25kA at 240V. Its I-Line style plug-in connection facilitates straightforward installation in compatible panelboards, making it suitable for a wide range of commercial and industrial applications, including motor control centers and main distribution panels, within an operational temperature range of -25 to 70 °C.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal Magnetic Protection, I-Line Plug-In
  • Voltage Rating: 240V AC
  • Current Rating: 300A
  • Dimensions: 11 in (279.4 mm) H x 6 in (152.4 mm) W x 5.84 in (148.34 mm) D
  • Standards: Industry Standard Thermal-Magnetic Protection
  • Applications: Industrial Power Distribution, Motor Control Centers, Main Panelboards
  • Switch Type: Circuit Breaker
  • Configuration: Plug-In
  • Phase: 3
  • AIC Rating: 25kA @ 240V
  • Connection: I-Line Style Plug-In
  • Poles: 3
  • Protection: Thermal Magnetic
  • Functions: Long Time and Instantaneous Trip
  • Temp Rating: -13 to 158 °F (-25 to 70 °C)
  • Weight: 17.97 lb


Product Identification
  • UPC: 785901649311
  • GTIN: 00785901649311