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Siemens JD63T400 - 400A Thermal Magnetic Breaker (35kA AIC)

Siemens
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Siemens JD63T400 is a 400A thermal magnetic circuit breaker designed for providing reliable overcurrent and short-circuit protection in three-phase industrial power distribution systems. It features a 600V AC voltage rating and a 35kA interrupting capacity at 480V, housed within a compact, bolt-on JD frame that is compatible with JD, HJD, HJXD, HHJD, and HHJXD panelboards. This RoHS-compliant unit is UL and IEC certified for safety and operates effectively across a temperature range of -25°C to 70°C (-13°F to 158°F). Its design supports copper conductors from AWG 3/0 to 500 KCMIL and aluminum conductors from AWG 4/0 to 500 KCMIL, making it suitable for main feeder and branch circuit protection in commercial and industrial facilities.

Key Features & Specifications
  • Type: Thermal Magnetic Circuit Breaker, Bolt-On Connection
  • Voltage Rating: 600V AC
  • Current Rating: 400A
  • Frame Size: JD, 400A
  • Poles: 3
  • Phase: 3
  • AIC Rating: 35kA @ 480V AC
  • Protection Functions: LI (Long-time and Instantaneous Trip)
  • Wire Size: AWG 3/0 to 500 KCMIL (Cu), AWG 4/0 to 500 KCMIL (Al)
  • Standards & Certification: RoHS, UL, IEC
  • Operating Temperature: -25°C to 70°C (-13°F to 158°F)
  • Compatible Frames: JD, HJD, HJXD, HHJD, HHJXD
  • Family: Sentron Series
  • Weight: 2.5 lb
  • Country of Origin: Mexico


Product Identification
  • UPC: 783643213494
  • GTIN: 00783643213494