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Square D Q1B21001021 - Molded Case 100A 2-Pole

Square D
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Square D Q1B21001021 is a molded case circuit breaker from the Q1B Series, designed for overcurrent protection in electrical distribution systems. This 100A, 2-pole unit operates at 240V and utilizes thermal-magnetic protection with LI (Long-Time and Instantaneous) trip functions. The breaker features a bolt-on connection type, weighs 2 lb, and is rated for single-phase applications with an interrupting capacity of 10kA at 240V. It complies with UL listing standards for safety and performance. This circuit breaker is suited for industrial and commercial power distribution panels requiring reliable branch circuit protection.

Key Features & Specifications
  • Manufacturer: Square D
  • Item Subcategory: Molded Case
  • Family: Q1B Series
  • Type: Q1B
  • Functions: LI - Long-Time and Instantaneous
  • Voltage Rating: 240V
  • Poles: 2
  • Connection: Bolt-On
  • Protection: Thermal Magnetic
  • AIC rating: 10kA@240V
  • Phase: 1
  • Current Rating: 100A
  • Weight: 2 lb
  • Amperage: 100 A
  • Voltage: 240 VAC
  • Mounting Type: Bolt-On
  • Interrupt Rating: 10 kA
  • Series/Frame: Q1B
  • Phase: Single
  • Certifications: UL Listed