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Eaton HLDB3350W - Molded Case 350A 600V 3-Pole

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Eaton HLDB3350W is a three-pole molded case circuit breaker from the Series C family, designed to provide long-time and instantaneous (LI) overcurrent protection in industrial and commercial power distribution systems. This 350-amp, 600V-rated unit features a bolt-on L-frame construction with fixed thermal and fixed magnetic trip elements, delivering an interrupting rating of 65 kA at 480V. The breaker weighs 25 lb and includes a Mil-Spec HI shock 115V shunt trip with 50-inch pigtail leads for remote tripping capability, operating at 50/60 Hz. It is UL 489 certified for reliable performance in demanding electrical environments. Typical applications include switchboards, panelboards, and motor control centers requiring robust short-circuit and overload protection.

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: 65 kA at 480V
  • Phase: 3
  • Current Rating: 350 A
  • Interrupt Rating: 65 kAIC at 240 Vac, 35 kAIC at 480 Vac, 25 kAIC at 600 Vac
  • Shunt Trip: Mil-Spec HI shock 115V with 50 in pigtail leads
  • Certification: UL 489
  • Frequency: 50/60 Hz


Part Number: HLDB3350W