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HLD3300X

Cutler Hammer
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Eaton HLD3300X is a 300 Amp, 3-pole molded case circuit breaker from the Series C L-frame family, designed for thermal-magnetic overcurrent protection in industrial and commercial power distribution systems. It is rated for 600 VAC and 250 VDC operation at 50/60 Hz, with an interrupting capacity of 65 kA at 480 VAC and 100 kA at 240 VAC, and features a fixed thermal and fixed magnetic LI (Long-Time and Instantaneous) trip unit. The unit weighs 22 lb, uses a bolt-on connection, and incorporates a patented high-speed blow-open contact design for enhanced fault interruption performance. This breaker complies with applicable industry standards for overcurrent protection in three-phase systems. It is typically applied in panelboards, switchboards, and motor control centers requiring reliable 300A circuit protection.

Key Features & Specifications
  • Manufacturer: Eaton
  • Item Subcategory: Molded Case
  • Family: Series C
  • Type: HLD
  • Weight: 22 lb
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: L Frame
  • Voltage Rating: 600 VAC, 250 VDC
  • Poles: 3
  • Connection: Bolt-On
  • Protection: Thermal Magnetic
  • AIC rating: 65 kA at 480 VAC, 100 kA at 240 VAC
  • Phase: 3
  • Current Rating: 300 A
  • Trip Unit: Fixed Thermal, Fixed Magnetic
  • Frequency: 50/60 Hz


Eaton HLD3300X - Molded Case 300A 600V 3-Pole Breaker