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Square D KC342501021 - Molded Case Circuit Breaker 250A 480V 3-Pole

Square D
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Square D KC342501021 is a 3-pole I-Line style plug-in molded case circuit breaker from the I-Line family, designed for overcurrent protection in power distribution systems. It is rated for 250A at 480VAC with a 65kA interrupting capacity at 480V, utilizing thermal magnetic protection with long time and instantaneous trip functions. The breaker weighs 16 lb and features a plug-in connection for straightforward installation in I-Line panelboards, operating within a temperature range of -13 to 158 °F (-25 to 70 °C). It complies with industry standards for commercial and industrial electrical systems. Typical applications include branch circuit protection in manufacturing facilities, commercial buildings, and industrial power distribution panels.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker
  • Manufacturer: Square D
  • Family: I-Line
  • Part Number: KC342501021
  • Series/Frame: I-Line KC
  • Amperage: 250A
  • Voltage: 480VAC
  • Poles: 3
  • Phase: 3
  • Mounting Type: I-Line Plug-In
  • Connection: I-Line Style Plug-In
  • Interrupting Rating: 65kAIC @ 480V
  • Protection: Thermal Magnetic
  • Trip Unit: Thermal Magnetic w/ Shunt Trip
  • Functions: Long Time and Instantaneous Trip
  • Shunt Trip: 120-240VAC
  • Weight: 16 lb
  • Temp Rating: -13–158 °F (-25–70 °C)