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Square D Q1L390 - Molded Case 90A 3-Pole 240V

Square D
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Square D Q1L390 is a 3-pole molded case circuit breaker from the Q1L Series, designed to provide overcurrent protection through thermal magnetic operation. It is rated for 240V AC, 90A, with a 10kA interrupting capacity at 240V, and utilizes LI (Long-Time and Instantaneous) trip functions for coordinated fault response. This feed-thru connection breaker weighs 2 lb and features a compact molded case construction suitable for industrial panelboards. It complies with applicable UL and NEMA standards for thermal magnetic circuit protection. Typical applications include branch circuit protection in commercial and industrial power distribution systems requiring 3-phase, 240V service.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal Magnetic
  • Voltage Rating: 240V AC
  • Current Rating: 90A
  • Poles: 3
  • Phase: 3
  • Connection: Feed-Thru
  • Protection: Thermal Magnetic
  • AIC Rating: 10kA@240V
  • Functions: LI - Long-Time and Instantaneous
  • Family: Q1L Series
  • Weight: 2 lb
  • Item Subcategory: Molded Case


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