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ABB JS-3P-400A-DC - Molded Case Circuit Breaker 400A 3-Pole

ABB
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ABB JS-3P-400A-DC is a three-pole molded case circuit breaker from the JS Series, designed to provide primary overcurrent protection through its thermal-magnetic trip mechanism. It is rated for 400A at 600V AC and supports dual voltage capability with a 690V AC rating at 50-60Hz and a 750V DC rating, with an interrupting capacity of 36 kA and an AIC rating of 30kA at 480V. The unit features a bolt-on connection, fixed mounting style, and weighs 10 lb, with dimensions of 103.5mm in length, 140mm in width, and 103.5mm in depth. It complies with industry standards for industrial and commercial power distribution systems, including wye and delta configurations. Typical applications include protecting branch circuits and feeders in manufacturing facilities, data centers, and commercial buildings.

Key Features & Specifications
  • Type: JS
  • Amperage Rating: 400A
  • Poles: 3-Pole
  • AC Voltage Rating: 690V (50-60Hz)
  • DC Voltage Rating: 750V
  • Interrupt Capacity: 36 kA
  • AIC rating: 30kA@480V
  • Tripping Mechanism: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Mounting Style: Fixed
  • Connection: Bolt-On
  • Thermal Setting Range: 280-400A
  • Magnetic Setting Range: 2000-4000A
  • Weight: 10 lb
  • Length: 103.5mm
  • Width: 140mm
  • Depth: 103.5mm
  • Phase: 3