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Siemens EF2B040 - 40A 2-Pole Thermal Magnetic Breaker

Siemens
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Siemens EF2B040 Circuit Breaker - 40A 2-Pole Thermal Magnetic Molded Case The Siemens EF2B040 is a 2-pole molded case circuit breaker from the EF Series, designed to provide LI (Long-Time and Instantaneous) protection for electrical circuits. This thermal magnetic breaker is rated for 600VAC, 40A continuous current, with an interrupting capacity of 14kA at 480V, ensuring reliable fault interruption in single-phase applications. Weighing 3 lb, it features a bolt-on connection style for secure mounting in compatible panelboards and switchboards. The breaker complies with industry standards for molded case circuit breakers, making it suitable for industrial and commercial power distribution systems. Typical applications include branch circuit protection in lighting, heating, and motor control panels where compact, dependable overcurrent protection is required.

Key Features & Specifications
  • Type: Molded Case, Thermal Magnetic, LI (Long-Time and Instantaneous) Protection
  • Voltage Rating: 600V
  • Current Rating: 40A
  • Poles: 2
  • Phase: 1
  • AIC Rating: 14kA@480V
  • Connection: Bolt-On
  • Weight: 3 lb
  • Family: EF Series
  • Functions: LI - Long-Time and Instantaneous
  • Protection: Thermal Magnetic
  • Item Subcategory: Molded Case


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