Square D PJA36040U44A - Molded Case Circuit Breaker 400A 600V
Square D PJA36040U44A - Molded Case Circuit Breaker 400A 600V

Square D PJA36040U44A - Molded Case Circuit Breaker 400A 600V

Square D
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Square D PJA36040U44A is a PowerPact P-frame molded case circuit breaker from Schneider Electric designed for overcurrent and ground fault protection in industrial power distribution systems. It is rated 400 A at 600 V AC with 3 poles and a 65 kA interrupting capacity at 480 V, utilizing a solid-state Micrologic 6.0A LSIG trip unit with ammeter for long time, instantaneous, and ground fault protection. The breaker measures 12.86 in (326.64 mm) x 8.27 in (210.06 mm) x 8.05 in (204.47 mm) and weighs 32 lb, featuring an I-Line style plug-in connection with AL800M23K terminal lugs for 3 x AWG 3/0 to 500 kcmil aluminum or copper wire. It complies with UL, CSA, NEMA, NOM-003-SCFI-2000, and IEC 60947-2 standards, with certifications from UL, CSA, and NOM, and operates within a temperature range of 13 to 158 °F (-25 to 70 °C). This circuit breaker is suited for panelboard and switchboard applications in commercial and industrial facilities requiring reliable solid-state protection.

Key Features & Specifications
  • Type: PJA
  • Family: PowerPact
  • Frame Size: P Frame
  • Poles: 3
  • Current Rating: 400 A
  • Voltage Rating: 600 V
  • Protection: Solid State
  • Trip Unit: Micrologic 6.0A LSIG with ammeter
  • Functions: Long Time, Instantaneous, Ground Fault Trip
  • Connection: I-Line Style Plug-In
  • Terminal Connection: AL800M23K
  • Wire Size: 3 x AWG 3/0...500 kcmil aluminium/copper
  • AIC Rating: 65 kA at 480 V
  • Phase: 3
  • 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: 785901002963
  • GTIN: 00785901002963