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Square D QDA321506 - Molded Case 150A 3-Pole 240V

Square D
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Square D QDA321506 is a 3-pole I-Line molded case circuit breaker from Schneider Electric designed for 150A thermal-magnetic overcurrent protection in three-phase systems. It operates at 240V with a 25kA interrupting rating and provides LI (Long-Time and Instantaneous) trip functions. The unit measures 6.47 in (164.34 mm) x 4.5 in (114.3 mm) x 3.93 in (99.82 mm) and weighs 6.669 lb, featuring an I-Line style plug-in connection for Q Frame panelboards. It complies with UL, CSA, NEMA, and NOM-003-SCFI-2000 standards, with certifications from UL, CSA, and NOM. This breaker is suited for industrial distribution panels requiring reliable branch circuit protection in ambient temperatures from -13°F to 158°F (-25°C to 70°C).

Key Features & Specifications
  • Manufacturer: Schneider Electric
  • Item Subcategory: Molded Case
  • Family: I-Line
  • Country of Origin: Mexico
  • Type: QDA
  • Dimensions: 6.47 in (164.34 mm) x 4.5 in (114.3 mm) x 3.93 in (99.82 mm) (Height x Width x Depth)
  • Weight: 6.669 lb
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: Q Frame
  • Voltage Rating: 240V
  • Poles: 3
  • Connection: I-Line Style Plug-In
  • Standards: UL, CSA, NEMA, NOM-003-SCFI-2000
  • Protection: Thermal Magnetic
  • Certification: UL, CSA, NOM
  • AIC rating: 25kA@240V
  • Phase: 3
  • Temp Rating: -13–158 °F (-25–70 °C)
  • Current Rating: 150A


QDA321506