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Siemens JD3B400 - 400A Molded Case Circuit Breaker (3P, 240V)

Siemens
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Siemens JD3B400 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 continuous current rating and a 240V AC voltage rating, engineered within a compact, robust housing with a bolt-on connection for secure installation. This thermal-magnetic protection device complies with relevant industry standards for safety and performance, utilizing a long-time and instantaneous (LI) trip function for coordinated protection. Its 65kA interrupting rating at 240V makes it suitable for demanding applications such as main distribution panels, motor control centers, and feeder circuits in commercial and industrial facilities.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal-Magnetic Protection, Bolt-On Connection
  • Voltage Rating: 240V AC
  • Current Rating: 400A
  • Poles: 3
  • Phase: 3
  • AIC Rating: 65kA @ 240V
  • Protection Functions: Long-Time and Instantaneous (LI)
  • Connection: Bolt-On
  • Family/Series: JD Series
  • Weight: 20 lb


Product Identification
  • Manufacturer Part Number: JD3B400