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Square D Q1B380 - Molded Case Circuit Breaker 80A 240V 3-Pole

Square D
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Square D Q1B380 is a 3-pole molded case circuit breaker from the Q1B Series, designed to provide long-time and instantaneous (LI) overcurrent protection for electrical distribution systems. It is rated for 80A at 240V AC with a 10kA interrupting capacity at 240V, utilizing a thermal magnetic trip mechanism for reliable fault clearing. This bolt-on unit weighs 2 lb and features a compact 3-phase construction suitable for panelboard installation. It complies with UL and CSA standards for safety and performance in commercial and industrial environments. Typical applications include branch circuit protection in lighting, motor, and power distribution panels.

Key Features & Specifications
  • Type: Q1B
  • Manufacturer: Square D
  • Item Subcategory: Molded Case
  • Family: Q1B Series
  • Weight: 2 lb
  • Functions: LI - Long-Time and Instantaneous
  • Voltage Rating: 240V
  • Poles: 3
  • Connection: Bolt-On
  • Protection: Thermal Magnetic
  • AIC rating: 10kA@240V
  • Phase: 3
  • Current Rating: 80A
  • Amperage: 80 Amps
  • Interrupt Rating: 10,000 AIC (10kA)
  • Mounting Type: Bolt-In
  • Frame: Q1B
  • Certifications: UL Listed, CSA Certified


Part Number: Q1B380