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Square D EHB14040 - Molded Case Circuit Breaker 40A 277V

Square D
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Square D EHB14040 is a single-pole molded case circuit breaker designed for thermal magnetic overcurrent protection in branch circuit applications. It is rated for 40A continuous current at 277VAC with a 14kA interrupting capacity at 277V, providing LI (Long-Time and Instantaneous) trip functions. This bolt-on breaker weighs 2 lb and operates within a temperature range of -13°F to 158°F (-25°C to 70°C). It complies with UL 489 standards for industrial and commercial electrical distribution systems. Typical applications include lighting panels, motor control centers, and general-purpose power distribution in manufacturing facilities and commercial buildings.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal Magnetic, Bolt-On
  • Voltage Rating: 277V AC
  • Current Rating: 40A
  • Poles: 1
  • Phase: 1
  • AIC Rating: 14kA@277V
  • Functions: LI - Long-Time and Instantaneous Trip
  • Connection: Bolt-On
  • Temp Rating: -13°F to 158°F (-25°C to 70°C)
  • Weight: 2 lb
  • Family: EHB Series
  • Item Subcategory: Molded Case