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Siemens LJ63B450 - Molded Case Circuit Breaker 450A 600V (3-Pole Bolt-On)

Siemens
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Siemens LJ63B450 is a 3-pole molded case circuit breaker from the LJ Series, designed to provide overcurrent protection through its thermal magnetic trip unit. It is rated for 450 amps at 600 volts with a 35kA interrupting capacity at 480V, supporting LI (Long-Time and Instantaneous) trip functions for precise fault response. This bolt-on unit weighs 25 lb and is constructed for reliable performance in 40°C ambient temperature environments. The breaker is UL listed, ensuring compliance with industry standards for safety and durability. It is suitable for industrial and commercial power distribution applications requiring robust circuit protection.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker
  • Manufacturer: Siemens
  • Model: LJ63B450
  • Family: LJ Series
  • Poles: 3
  • Current Rating: 450A
  • Voltage Rating: 600V
  • Interrupt Rating: 35kA @ 480V
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Connection: Bolt-On
  • Phase: 3
  • Weight: 25 lb
  • Ambient Temperature Rating: 40°C
  • UL Listed