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ED21B110 - Thermal-Magnetic Circuit Breaker 20A 110V

United Fuses
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ED21B110 is a thermal-magnetic circuit breaker designed for overcurrent protection in industrial electrical systems. It is rated for 110 volts AC and carries a current rating of 20 amps, with a compact frame size suitable for panelboard installation. The unit features a molded case construction with a trip type that combines thermal and magnetic elements for precise overload and short-circuit protection. It complies with UL 489 standards for branch circuit protection and is commonly used in motor control centers, distribution panels, and commercial power systems.

Key Features & Specifications
  • Type: Thermal-magnetic circuit breaker, molded case
  • Voltage Rating: 110 V AC
  • Current Rating: 20 A
  • Dimensions: Standard frame size for panelboard
  • Standards: UL 489
  • Applications: Industrial motor control, distribution panels, commercial power systems
  • Weight: 5.19 lb


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