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Westinghouse EHB1040 - Molded Case 40A 1-Pole 277V

Westinghouse
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The Westinghouse EHB1040 is a 40 amp, 1-pole molded case circuit breaker from the AB DE-ION family, designed to provide reliable overcurrent protection through its thermal magnetic trip unit with long-time and instantaneous (LI) functions. This single-phase breaker is rated for 277V AC and delivers a 10,000 AIC interrupting capacity at that voltage, ensuring robust fault clearing in electrical distribution systems. It features a bolt-on connection for secure panel mounting and weighs 1 lb, making it a compact yet durable component for industrial and commercial power panels. The unit complies with industry standards for molded case breakers, offering dependable performance in branch circuit protection applications. Typical uses include protecting lighting, motor, and general load circuits in commercial and industrial electrical systems where a single-pole, 40A breaker with bolt-on mounting is required.

Key Features & Specifications
  • Type: Molded Case
  • Family: AB DE-ION
  • Functions: LI - Long-Time and Instantaneous
  • Voltage Rating: 277V
  • Current Rating: 40A
  • Number of Poles: 1
  • Phase: 1
  • Connection: Bolt-On
  • Protection: Thermal Magnetic
  • AIC Rating: 10kA@277V
  • Weight: 1 lb