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Westinghouse LD3300 - Molded Case Circuit Breaker 300A 600V 3P

Eaton
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Westinghouse LD3300 is a molded case circuit breaker designed for providing reliable overcurrent and short-circuit protection in industrial power distribution systems. It features a 600V AC voltage rating and a 300A continuous current rating, housed within a compact L-frame measuring 8 x 10 x 10 inches (L x H x W) and weighing 21 lb. This three-pole, feed-thru connection breaker is UL 489 listed and employs a thermal-magnetic trip mechanism offering both long-time and instantaneous protection functions with an interrupting capacity of 35kA at 480V AC. Its operational temperature range of -25 to 70 °C (-13 to 158 °F) ensures performance in demanding environments, making it suitable for panelboards, switchboards, and other three-phase applications.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal-Magnetic Protection, LD Type, Series C Family
  • Voltage Rating: 600V AC
  • Current Rating: 300A
  • Dimensions: 8 in (Depth) x 10 in (Height) x 10 in (Width)
  • Standards: UL 489
  • Applications: Industrial power distribution, panelboards, switchboards
  • Switch Type: Circuit Breaker
  • Configuration: Fixed
  • Phase: 3
  • Amperage: 300A
  • AIC Rating: 35kA @ 480V AC
  • Connection: Feed-Thru
  • Poles: 3
  • Protection: Thermal-Magnetic
  • Functions: Long Time and Instantaneous Trip
  • Frame Size: L Frame
  • Trip Type: Thermal-Magnetic
  • Temp Rating: -25 to 70 °C (-13 to 158 °F)
  • Certification: UL 489
  • Country of Origin: United States
  • Weight: 21 lb


Product Identification
  • UPC: 786679026489
  • GTIN: 00786679026489