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Square D PJA36040CU44A - Molded Case Circuit Breaker 400A 600V

Square D
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Square D PJA36040CU44A is a Schneider Electric PowerPact P molded case circuit breaker designed for protecting electrical distribution systems against overloads and short circuits. This 400A, 600VAC, 3-pole solid-state unit features LSIG protection functions (Long-Time, Short-Time, Instantaneous, and Ground Fault) with a Micrologic 6.0A trip unit and an interrupting rating of 65kA at 480V. It measures 12.86 in (326.64 mm) x 8.27 in (210.06 mm) x 8.05 in (204.47 mm) (Height x Width x Depth), weighs 32 lb, and uses an I-Line style plug-in connection with AL800M23K terminals for 3 x AWG 3/0...500 kcmil aluminum/copper wire. The breaker complies with UL, CSA, NEMA, NOM-003-SCFI-2000, and IEC 60947-2 standards, and is certified by UL, CSA, and NOM for reliable performance. It is suited for three-phase industrial applications requiring robust circuit protection in a P frame size, operating within a temperature range of 13-158 °F (-25-70 °C).

Key Features & Specifications
  • Type: Molded Case
  • Family: Powerpact
  • Frame Size: P Frame
  • Current Rating: 400A
  • Voltage Rating: 600V
  • Poles: 3
  • Phase: 3
  • Protection: Solid State
  • Functions: LSIG - Long-Time, Short-Time, Instantaneous and Ground Fault
  • Trip Unit: Micrologic 6.0A
  • Interrupting Rating: 65kA at 480V
  • Continuous Current Rating: 100%
  • Connection: I-Line Style Plug-In
  • Terminal Connection: AL800M23K
  • Wire Size: 3 x AWG 3/0...500 kcmil aluminium/copper
  • Dimensions: 12.86 in (326.64 mm) x 8.27 in (210.06 mm) x 8.05 in (204.47 mm) (Height x Width x Depth)
  • Weight: 32 lb
  • Temp Rating: 13-158 °F (-25-70 °C)
  • Standards: UL, CSA, NEMA, NOM-003-SCFI-2000, IEC 60947-2
  • Certification: UL, CSA, NOM
  • Country of Origin: United States


Product Identification
  • UPC: 078590189263
  • GTIN: 00785901892632