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Square D JJL36250U31X - Molded Case Circuit Breaker 250A 600V 3P

Square D
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Square D JJL36250U31X is a three-pole molded case circuit breaker designed for providing reliable overcurrent and short-circuit protection in industrial power distribution systems. It features a 250A current rating and a 600V AC voltage rating, housed within a compact J-frame measuring 191 mm H x 104 mm W x 86 mm D and weighing 5.192 lb. The breaker utilizes a solid-state trip unit with Long-Time and Instantaneous (LI) protection functions and is constructed with lug terminals compatible with copper or aluminum conductors ranging from 3/0 AWG to 350 kcmil. It complies with UL, CSA, NEMA, NOM, and IEC 60947-2 standards and is typically applied in three-phase commercial and industrial panelboards, switchboards, and motor control centers, offering an interrupting capacity of 65kA at 480V AC and an operational temperature range of -2 to 70 °C.

Key Features & Specifications
  • Type: Three-pole, J-frame, molded case circuit breaker with solid-state trip unit and feed-thru connection
  • Voltage Rating: 600V AC
  • Current Rating: 250A
  • Dimensions: 7.5 in H (191 mm) x 4.09 in W (104 mm) x 3.4 in D (86 mm)
  • Weight: 5.192 lb
  • Standards: UL, CSA, NEMA, NOM-003-SCFI-2000, IEC 60947-2
  • Applications: Industrial power distribution, panelboards, switchboards, motor control centers
  • AIC Rating: 65kA @ 480V AC
  • Phase: 3
  • Poles: 3
  • Protection: Solid State with Long-Time and Instantaneous (LI) functions
  • Frame Size: J
  • Connection: Feed-Thru
  • Terminal Connection: Lug
  • Wire Size: 3/0 AWG to 350 kcmil (Copper or Aluminum)
  • Temp Rating: -2 to 70 °C (28 to 158 °F)
  • Certification: UL, CSA, NOM


Product Identification
  • UPC: 785901148371
  • GTIN: 00785901148371