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Square D CJ400NA - Molded Case Circuit Breaker 400A 600V 3P

Merlin Gerin
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Save $-337.40
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Square D CJ400NA is a molded case circuit breaker designed for providing a reliable disconnect and protection point in three-phase electrical systems. It features a 400A current rating and a 600V voltage rating, housed within a compact, 22 lb frame with a robust bolt-on connection. This non-automatic, three-pole device is engineered to meet industry standards, offering an interrupting capacity of 42kA at 480V AC for robust short-circuit protection. It is typically applied in industrial panelboards and switchboards where a manual circuit isolation point is required.

Key Features & Specifications
  • Type: Molded Case, Non-Automatic Circuit Breaker (Disconnect Switch)
  • Voltage Rating: 600V AC
  • Current Rating: 400A
  • Poles: 3
  • Phase: 3
  • Connection: Bolt-On
  • AIC Rating: 42kA @ 480V AC
  • Protection Function: NA (No Overcurrent Protection)
  • Family: Compact
  • Frame Type: CJ
  • Weight: 22 lb


Product Identification
  • Manufacturer Part Number: CJ400NA