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Square D JJN36250 - Molded Case Breaker 250A 600V 3-Pole

Square D
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Square D JJN36250 is a 3-pole molded case circuit breaker designed for thermal magnetic protection in industrial power distribution systems. It is rated for 600V AC, 250A continuous current, and provides LI (Long-Time and Instantaneous) trip functions for overload and short-circuit protection. The unit measures 7.52 inches in height, 4.44 inches in width, and 3.09 inches in depth, weighing 5 lb, with plug-in connection terminals accepting AWG 3/0 to 350 kcmil aluminum or copper wire. It complies with industry standards for 3-phase systems, featuring an AIC rating of 65kA at 480V and an operating temperature range of 28 to 158 °F (-2 to 70 °C). This breaker is typically applied in commercial and industrial switchboards, panelboards, and motor control centers requiring reliable overcurrent protection.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker
  • Voltage Rating: 600V AC
  • Current Rating: 250A
  • Poles: 3
  • Phase: 3
  • Connection: Plug-In
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • AIC Rating: 65kA@480V
  • Wire Size: AWG 3/0...350 kcmil aluminum/copper terminals
  • Dimensions: Height 7.52 in (191 mm) x Depth 3.09 in (78.49 mm) x Width 4.44 in (112.78 mm)
  • Weight: 5 lb
  • Temp Rating: 28-158 °F (-2-70 °C)
  • Breaker Type: Molded Case
  • Installation Type: Plug-In
  • Circuit Breaker Mounting Style: Plug-In
  • Terminal Connection: Plug-In
  • Frequency Rating: 60 Hz
  • Phase Connection: 3-Phase
  • Standards: UL, CSA, NEMA
  • Compatible Frames: JJN
  • Item QTY: 1
  • Breaker Frame: JJN
  • Current Rating: 250A
  • Polarity: 3-Pole
  • Operating Temperature Maximum Celsius: 70 °C


Product Identification
  • UPC: Not available
  • GTIN: Not available