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A1L340

Square D
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Square D A1L340 is a 3-pole molded case circuit breaker from the A1L Series, designed to provide thermal magnetic protection for electrical systems. It is rated for 40A at 240V AC with a 10kA interrupting capacity and utilizes LI (Long-Time and Instantaneous) trip functions for overcurrent protection. The unit features a feed-thru connection, weighs 2 lb, and is built for three-phase applications. This breaker complies with industry standards for reliable circuit protection in industrial environments. Typical applications include branch circuit protection in panelboards and switchboards.

Key Features & Specifications
  • Type: A1L
  • Item Subcategory: Molded Case
  • Family: A1L Series
  • Functions: LI - Long-Time and Instantaneous
  • Voltage Rating: 240V
  • Current Rating: 40A
  • Poles: 3
  • Phase: 3
  • Protection: Thermal Magnetic
  • AIC rating: 10kA@240V
  • Connection: Feed-Thru
  • Weight: 2 lb


Square D A1L340 - Molded Case Circuit Breaker 40A 240V