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Square D JJA36250U53X - Molded Case Circuit Breaker 250A 600V 3P

Square D
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Square D JJA36250U53X is a molded case circuit breaker designed for providing solid-state protection in three-phase industrial power distribution systems. It features a 250A current rating and a 600V voltage rating, housed within a compact J-frame measuring 191 mm H x 104 mm W x 86 mm D and weighing 5 lb. This unit complies with UL, CSA, NEMA, NOM, and IEC 60947-2 standards and is engineered for reliable operation in temperatures from -25°C to 70°C. Its typical applications include protecting feeders and branch circuits in commercial and industrial facilities, utilizing an I-Line plug-in connection for simplified installation.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Solid-State Protection with LSI (Long-Time, Short-Time, Instantaneous) Trip Functions
  • Voltage Rating: 600V AC
  • Current Rating: 250A
  • Dimensions: 7.5 in (191 mm) H x 4.09 in (104 mm) W x 3.4 in (86 mm) D
  • Standards: UL, CSA, NEMA, NOM-003-SCFI-2000, IEC 60947-2
  • Applications: Industrial and Commercial Power Distribution, Feeder and Branch Circuit Protection
  • Switch Type: Circuit Breaker
  • Configuration: I-Line Style Plug-In
  • Phase: 3
  • AIC Rating: 65kA @ 480V
  • Connection: I-Line, Lug
  • Poles: 3
  • Protection: Solid State
  • Functions: LSI - Long-Time, Short-Time and Instantaneous Trip
  • Frame Size: J
  • Temp Rating: -13–158 °F (-25–70 °C)
  • Wire Size: AWG 3/0...350 kcmil (Aluminium/Copper Terminals)
  • Certification: UL, CSA, NOM
  • Phase Connection: BA
  • Country of Origin: United States
  • Family: Powerpact


Product Identification
  • UPC: 078590194925
  • GTIN: 00785901949251