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Eaton LD3300Y - Molded Case Circuit Breaker 300A 600V 3 Pole

Cutler Hammer
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Eaton LD3300Y is a 300 Amp, 600 Volt, 3 Pole molded case circuit breaker from the Series C Cutler Hammer line, designed to provide reliable overcurrent protection for electrical distribution systems. It features a thermal magnetic trip unit with long-time and instantaneous (LI) functions, a bolt-on mounting type, and a standard interrupting rating of 35 kA at 480V and 65 kA at 240V. The breaker is constructed within an L Frame and weighs 20 lb, suitable for 3-phase systems. It complies with UL 489 and IEC 60947-2 standards for safety and performance. This breaker is typically used in industrial and commercial electrical distribution applications requiring robust circuit protection.

Key Features & Specifications
  • Manufacturer: Eaton
  • Item Subcategory: Molded Case
  • Family: Series C
  • Type: LD
  • Weight: 20 lb
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: L Frame
  • Voltage Rating: 600V
  • Poles: 3
  • Connection: Bolt-On
  • Protection: Thermal Magnetic
  • AIC rating: 35kA@480V
  • Phase: 3
  • Current Rating: 300A
  • Amperage: 300 Amp
  • Voltage: 600 Volt AC
  • Mounting Type: Bolt-On
  • Interrupt Rating: 35 kA at 480V, 65 kA at 240V
  • Series/Frame: Series C (NEMA L-Frame)
  • Trip Unit: Thermal Magnetic (Long-Time and Instantaneous)
  • Standards: UL 489, IEC 60947-2