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Square D LH36300CBA - Molded Case Circuit Breaker 300A 600V

Square D
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Square D LH36300CBA is a 3-pole molded case circuit breaker from the I-Line family, designed for primary power distribution protection in industrial and commercial electrical systems. This 300A unit is rated for 600VAC and provides thermal-magnetic protection with long-time and instantaneous (LI) trip functions to safeguard against overloads and short circuits. Weighing 28 lb, it features an L Frame construction with an I-Line style plug-in mounting system for secure panel installation and a high interrupting rating of 35kA at 480VAC. The breaker complies with UL, CSA, and IEC standards, ensuring reliable performance in demanding environments. Typical applications include main or feeder protection in switchboards, panelboards, and motor control centers.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker
  • Manufacturer: Square D
  • Model: LH36300CBA
  • Family: I-Line
  • Type: LH
  • Poles: 3
  • Phase: 3
  • Current Rating: 300A
  • Voltage Rating: 600VAC
  • Frame Size: L Frame
  • Connection: I-Line Style Plug-In
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • AIC Rating: 35kA @ 480VAC
  • Weight: 28 lb
  • Breaking Capacity Code: H
  • Magnetic Hold Current: 1500A
  • Standards: UL, CSA, IEC


Product ID: LH36300CBA