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Eaton HLDB3300X - Molded Case Circuit Breaker 300A 600V 3-Pole

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Eaton HLDB3300X is a 3-pole molded case circuit breaker from the Series C L-frame family, designed to provide long-time and instantaneous (LI) thermal-magnetic protection for industrial and commercial power distribution systems. It is rated for 300A at 600V AC, with a high interrupting capacity of 65kA at 480V AC, and operates at 50/60 Hz. The unit features a bolt-on connection, fixed thermal and fixed magnetic trip units, and weighs 25 lb, with a compact L-frame construction suitable for panelboard and switchboard installations. It complies with applicable UL and industry standards for overcurrent protection in demanding electrical environments. Typical applications include motor control centers, distribution panels, and main feeder protection in manufacturing plants, data centers, and commercial facilities.

Key Features & Specifications
  • Manufacturer: Eaton
  • Item Subcategory: Molded Case
  • Family: Series C
  • Type: HLDB
  • Weight: 25 lb
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: L Frame
  • Voltage Rating: 600V AC
  • Poles: 3
  • Connection: Bolt-On
  • Protection: Thermal Magnetic
  • AIC rating: 65kA@480V
  • Phase: 3
  • Current Rating: 300 A
  • Trip Type: Fixed Thermal / Fixed Magnetic
  • Frequency: 50/60 Hz


Part Number: HLDB3300X