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Siemens JD63B400H - Molded Case Circuit Breaker, 400A 600V 3P

Siemens
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Siemens JD63B400H is a molded case circuit breaker from the Sentron Series designed to provide reliable overcurrent and short-circuit protection for three-phase industrial power distribution systems. It features a 400A current rating and a 600V voltage rating, housed within a robust JD frame with a bolt-on connection for secure installation. The breaker utilizes a thermal-magnetic trip mechanism offering both long-time and instantaneous (LI) protection functions, and it is constructed to operate within a temperature range of -25°C to 70°C (-13°F to 158°F). Compliant with UL, IEC, and RoHS standards, it offers an interrupting capacity of 35kA at 480V AC, making it suitable for protecting feeders, branch circuits, and motor applications in commercial and industrial panels.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal-Magnetic Protection, Bolt-On Connection
  • Voltage Rating: 600V AC
  • Current Rating: 400A
  • Frame Size: JD Frame
  • Poles: 3
  • Phase: 3-Phase
  • AIC Rating: 35kA @ 480V AC
  • Protection Functions: LI (Long-Time and Instantaneous)
  • Trip Type: Thermal-Magnetic
  • Connection: Bolt-On
  • Standards & Certification: UL, IEC, RoHS
  • Operating Temperature: -25°C to 70°C (-13°F to 158°F)
  • Weight: 27 lb
  • Family: Sentron Series