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Eaton HLDB3400C - Molded Case Circuit Breaker 400A 600V

Cutler Hammer
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Eaton HLDB3400C is a Series C molded case circuit breaker from the L Frame family, designed to provide thermal-magnetic overcurrent protection with LI (Long-Time and Instantaneous) trip functions for commercial and industrial electrical systems. This three-pole, three-phase breaker is rated for 400A at 600V AC, with an interrupting capacity of 65kA at 480V AC, and features a feed-thru connection with aluminum terminals for reliable line and load mounting. The unit weighs 25 lb and is constructed with a fixed thermal and fixed magnetic trip unit, ensuring consistent protection against overloads and short circuits. It complies with UL 489 standards and operates at 50/60 Hz, making it suitable for robust circuit protection in demanding electrical distribution environments.

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
  • Poles: 3
  • Connection: Feed-Thru
  • Protection: Thermal Magnetic
  • AIC rating: 65kA@480V
  • Phase: 3
  • Current Rating: 400A
  • Interrupt Rating: 100 kAIC at 240 Vac
  • Mounting Type: Line and Load
  • Terminal Material: Aluminum
  • Frequency Rating: 50/60 Hz
  • Product Type: Molded Case Circuit Breaker
  • Certifications: UL 489


Part Number: HLDB3400C