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EF3B050L

Siemens
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Save $-440.69
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Siemens EF3B050L is a 3-pole molded case circuit breaker from the EF Series, designed for overcurrent protection in industrial and commercial power distribution systems. It is rated for 50A continuous current at 600VAC, with a thermal magnetic protection mechanism providing LI (Long-Time and Instantaneous) trip functions for coordinated fault response. The unit features a feed-thru connection type, weighs 8 lb, and has an interrupting rating of 14kA at 480VAC. This breaker complies with applicable industry standards for molded case circuit breakers, ensuring reliable performance in branch circuit protection. Typical applications include motor control centers, panelboards, and switchboards requiring 3-phase, 600VAC protection.

Key Features & Specifications
  • Type: Molded Case
  • Family: EF Series
  • Poles: 3
  • Phase: 3
  • Current Rating: 50A
  • Voltage Rating: 600VAC
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Interrupting Rating: 14kA at 480V
  • Connection: Feed-Thru
  • Weight: 8 lb


Siemens EF3B050L - Molded Case Circuit Breaker 50A 600VAC