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JJN36250

Square D
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Square D JJN36250 is a 250 Amp, 600 Volt, 3-pole molded case circuit breaker designed for overload and short-circuit protection in industrial and commercial power distribution systems. It utilizes a thermal magnetic trip mechanism with LI (Long-Time and Instantaneous) functions and delivers a 65kA interrupting capacity at 480V. The unit measures 7.52 inches in height, 4.44 inches in width, and 3.09 inches in depth, weighing 5 lb, with a plug-in connection type and terminals accepting AWG 3/0 to 350 kcmil aluminum or copper wire. It is UL 489 listed and operates within a temperature range of 28 to 158 °F (-2 to 70 °C), making it suitable for three-phase applications requiring reliable circuit protection.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker
  • Manufacturer: Square D
  • Part Number: JJN36250
  • Current Rating: 250A
  • Voltage Rating: 600V
  • Poles: 3
  • Phase: 3
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Connection: Plug-In
  • Mounting Type: Unit Mount
  • Wire Size: AWG 3/0...350 kcmil aluminum/copper terminals
  • AIC Rating: 65kA@480V
  • Interrupt Rating: 25 kA at 600 VAC
  • 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)
  • Standards: UL 489 Listed
  • Frame Type: J-Frame


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