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Square D A1B340 - Molded Case 40A 3-Pole 240V

Square D
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Square D A1B340 is a 3-pole, 40 Amp molded case circuit breaker from the A1B Series, designed to provide thermal magnetic protection for electrical systems. It operates at 240V with a 10kA interrupting capacity at 240V and utilizes a LI (Long-Time and Instantaneous) trip function for overcurrent protection. The unit features a bolt-on connection type, weighs 2 lb, and is constructed for 3-phase applications. It complies with applicable UL and industry standards for safety and performance. This breaker is suitable for commercial and industrial applications requiring reliable circuit protection.

Key Features & Specifications
  • Manufacturer: Square D
  • Item Subcategory: Molded Case
  • Family: A1B Series
  • Type: A1B
  • 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: 40A
  • Amperage: 40 Amps
  • Mounting Type: Bolt-On
  • Series/Frame: A1B
  • Trip Unit: Thermal Magnetic


Part Number: A1B340