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Siemens NGB3K050B - Molded Case Circuit Breaker, 50A 600V 3P

Siemens
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Siemens NGB3K050B is a molded case circuit breaker designed for providing reliable thermal-magnetic protection against overloads and short circuits in industrial power distribution systems. It features a 50A current rating and a 600V AC voltage rating, housed within a compact GB2 frame measuring 4.098" x 3.00" x 1.098" and weighing 0.309 lb. The breaker is UL and IEC certified, ensuring compliance with international safety standards, and its operational temperature range from -13°F to 158°F makes it suitable for demanding environments. Typical applications include protecting feeders and branch circuits in panelboards and switchgear, where its 25kA interrupting capacity at 480V and bolt-on connection for 8 to 1/0 AWG copper or aluminum conductors provide robust performance.

Key Features & Specifications
  • Type: NGB Molded Case Circuit Breaker, Thermal Magnetic Protection with Long Time and Instantaneous Trip Functions
  • Voltage Rating: 600V AC
  • Current Rating: 50A
  • Dimensions: 4.098 x 3.00 x 1.098 inch (104.1 x 76.2 x 27.9 mm)
  • Standards: UL, IEC Certification
  • Applications: Industrial power distribution, panelboards, switchgear
  • Switch Type: Circuit Breaker
  • Configuration: Bolt-On
  • Temp Rating: -13°F to 158°F (-25°C to 70°C)
  • Phase: 2
  • AIC rating: 25kA @ 480V
  • Connection: Bolt-On
  • Poles: 3
  • Protection: Thermal Magnetic
  • Functions: Long Time and Instantaneous Trip
  • Frame Size: GB2 Frame
  • Wire Size: 8 to 1/0 AWS, Cu/Al
  • Family: VL Series
  • Country of Origin: Mexico
  • Weight: 0.309 lb


Product Identification
  • UPC: 804766339493
  • GTIN: 00804766339493