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Siemens LD63B400 - Molded Case Circuit Breaker 400A 600V 3P

Siemens
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Siemens LD63B400 is a molded case circuit breaker designed for providing reliable overcurrent and short-circuit protection in three-phase industrial power distribution systems. It features a 400A current rating and a 600V voltage rating, housed within a robust LD frame with a bolt-on connection for secure installation. This thermal magnetic breaker provides both long-time and instantaneous (LI) protection functions and is constructed to accept copper or aluminum conductors ranging from 3/0 AWG to 500 kcmil. The device complies with UL and IEC standards, offers an interrupting capacity of 35kA at 480V, and is suited for integration into panelboards and switchboards requiring robust circuit protection.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal Magnetic Protection, LI (Long-Time & Instantaneous) Functions
  • Voltage Rating: 600V AC
  • Current Rating: 400A
  • Frame Size: LD Frame
  • Poles: 3
  • Connection: Bolt-On
  • Phase: 3-Phase
  • AIC Rating: 35kA at 480V
  • Wire Size: 3/0 AWG to 500 kcmil, 4/0 AWG to 500 kcmil, Copper or Aluminum
  • Certification: UL, IEC
  • Weight: 19.268 lb


Product Identification
  • UPC: 783643213876
  • GTIN: 00783643213876