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Square D JRA36250U31X - Molded Case Breaker 250A 600V 3P

Square D
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Square D JRA36250U31X is a molded case circuit breaker designed for providing reliable overcurrent protection in demanding three-phase industrial power distribution systems. It features a solid-state protection system with Long-Time and Instantaneous (LI) trip functions, rated for 250A at 600V AC with a high interrupting capacity of 200kA at 480V. The compact J-frame unit is constructed for durability with a plug-in I-Line style connection and terminals that accept conductors from AWG 3/0 to 350 kcmil, operating within a temperature range of -2 to 70 °C (28 to 158 °F). This breaker complies with major industry standards including UL, CSA, NEMA, and IEC 60947-2, ensuring suitability for a wide range of commercial and industrial panelboard and switchboard applications where robust protection and compliance are critical.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Solid State Protection, I-Line Style Plug-In Connection
  • Voltage Rating: 600V AC
  • Current Rating: 250A
  • Frame Size: J Frame
  • Poles: 3
  • Phase: 3
  • AIC Rating: 200kA @ 480V
  • Functions: LI (Long-Time and Instantaneous)
  • Trip Type: Solid State
  • Connection: Plug-In
  • Wire Size: AWG 3/0 to 350 kcmil (Aluminium/Copper Terminals)
  • Standards/Certification: UL, CSA, NEMA, NOM-003-SCFI-2000, IEC 60947-2
  • Temp Rating: -2 to 70 °C (28 to 158 °F)
  • Dimensions: 191 mm H x 104 mm W x 86 mm D (7.5 in x 4.09 in x 3.4 in)
  • Weight: 7.132 lb
  • Family: Powerpact
  • Country of Origin: United States


Product Identification
  • UPC: 078590195116
  • GTIN: 00785901951162