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Siemens NEB1B050 - Molded Case Breaker 50A 1-Pole 277V

Siemens
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Siemens NEB1B050 is a 1-pole molded case circuit breaker from the NEB Series, designed for overload and short-circuit protection in single-phase applications. It is rated for 50A continuous current at 277V AC, with a high interrupting capacity of 35kA at 277V, and utilizes a thermal-magnetic trip unit providing LI (Long-Time and Instantaneous) functions. The breaker features a bolt-on connection type, weighs 1 lb, and is constructed for compact installation in commercial and industrial electrical panels. This unit complies with industry standards for molded case circuit breakers, ensuring reliable performance in demanding environments. Typical applications include branch circuit protection in lighting, distribution panels, and motor control centers.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker
  • Family: NEB Series
  • Poles: 1
  • Current Rating: 50 Amps
  • Voltage Rating: 277 Volts AC
  • Interrupting Rating: 35 kA at 277V
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Connection: Bolt-On
  • Phase: 1
  • Weight: 1 lb