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Eaton HLDB3400Y - Molded Case Circuit Breaker 400A 600V 3-Pole

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Eaton HLDB3400Y is a three-pole molded case circuit breaker from the Series C family, designed to provide LI (Long-Time and Instantaneous) thermal-magnetic protection for industrial and commercial power distribution systems. Rated at 400A and 600V AC, this L-frame breaker delivers a 65kA interrupting capacity at 480V AC and supports three-phase operation with a bolt-on connection. Weighing 25 lb, the unit features a compact construction with aluminum terminals and is certified to UL 489 standards for reliable overcurrent protection in panelboards, switchboards, and motor control centers.

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: 600 Vac, 250 Vdc
  • Poles: 3
  • Connection: Bolt-On
  • Protection: Thermal Magnetic
  • AIC rating: 65kA@480V
  • Phase: 3
  • Current Rating: 400 A
  • Interrupt Rating: 100 kAIC at 240 Vac
  • Frequency Rating: 50 to 60 Hz
  • Terminal Material: Aluminum
  • Certifications: UL 489