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Square D QJA321006 - Molded Case 100A 3-Pole 240V

Square D
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Square D QJA321006 is a 3-pole I-Line style plug-in molded case circuit breaker designed for overcurrent protection in commercial and industrial power distribution systems. It is rated for 100A at 240VAC with a 100kA interrupting capacity at 240V, utilizing a thermal magnetic trip unit for LI (Long-Time and Instantaneous) protection. The breaker features a Q Frame construction, weighs 4 lb, and uses I-Line style plug-in connections for secure installation in panelboards and switchgear. It complies with industry standards for molded case circuit breakers, ensuring reliable fault interruption and equipment safety. Typical applications include branch circuit protection in three-phase power distribution systems within manufacturing facilities, commercial buildings, and electrical infrastructure.

Key Features & Specifications
  • Manufacturer: Square D
  • Item Subcategory: Molded Case
  • Family: I-Line
  • Type: QJA
  • Weight: 4 lb
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: Q Frame
  • Voltage Rating: 240V
  • Poles: 3
  • Connection: I-Line Style Plug-In
  • Protection: Thermal Magnetic
  • AIC rating: 100kA@240V
  • Phase: 3
  • Current Rating: 100A
  • Part Number: QJA321006
  • Series: QJA
  • Amperage: 100A
  • Voltage: 240VAC
  • Mounting Type: I-Line Plug-In
  • Interrupt Rating: 100kA@240V
  • Frame: Q-Frame
  • Trip Unit: Thermal Magnetic
  • Terminal Type: Load Side Lug
  • Phase: 3-Phase