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Square D PJA36040U31A - Molded Case Circuit Breaker 400A 600V 3P

Square D
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Square D PJA36040U31A 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 solid-state trip unit with long-time and instantaneous (LI) protection functions, rated for 400A at 600V with an interrupting capacity of 65kA at 480V. The unit is constructed with a P-frame in a compact form factor measuring 326.64 mm H x 210.06 mm W x 204.47 mm D and utilizes an I-Line style plug-in connection with AL800M23K terminals compatible with 3/0 to 500 kcmil aluminum or copper conductors. This breaker complies with UL, CSA, NEMA, NOM, and IEC 60947-2 standards and is rated for operation in ambient temperatures from -25 to 70 °C. It is typically applied in industrial panelboards and switchboards for main feeder and branch circuit protection.

Key Features & Specifications
  • Type: PJA Series Molded Case Circuit Breaker with Solid-State Trip Unit
  • Voltage Rating: 600V AC
  • Current Rating: 400A
  • Dimensions: 326.64 mm H x 210.06 mm W x 204.47 mm D (12.86 in x 8.27 in x 8.05 in)
  • Weight: 32 lb
  • Standards: UL, CSA, NEMA, NOM-003-SCFI-2000, IEC 60947-2
  • Applications: Industrial Power Distribution, Panelboards, Switchboards
  • Switch Type: Circuit Breaker
  • Configuration: Plug-In
  • Temp Rating: -25 to 70 °C (13 to 158 °F)
  • Phase: 3
  • AIC Rating: 65kA @ 480V
  • Connection: I-Line Style Plug-In
  • Poles: 3
  • Protection: Solid State
  • Functions: LI (Long-Time and Instantaneous)
  • Frame Size: P Frame
  • Terminal Connection: AL800M23K
  • Wire Size: 3 x AWG 3/0 to 500 kcmil (Aluminum/Copper)
  • Certification: UL, CSA, NOM
  • Family: Powerpact
  • Country of Origin: United States


Product Identification
  • UPC: 060648628531
  • GTIN: 03606486285312