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Siemens NEB1B030B - Molded Case Circuit Breaker 30A 1P 277V

Siemens
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Siemens NEB1B030B is a molded case circuit breaker designed for providing reliable overcurrent and short-circuit protection in single-phase industrial and commercial electrical systems. It features a 30A current rating and a 277V AC voltage rating, with a robust thermal-magnetic trip unit offering both long-time and instantaneous (LI) protection functions. The breaker is constructed as a compact, single-pole unit with a bolt-on connection, designed to accommodate copper or aluminum conductors from size AWS 8 to AWS 1/0, and it operates reliably within a temperature range of -25 to 70 °C. It complies with industry standards, including a 35kA interrupting rating at 277V, ensuring protection for downstream equipment. Typical applications include protection for feeders, branch circuits, and individual loads within panelboards and switchgear.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal-Magnetic Protection, Bolt-On Connection
  • Voltage Rating: 277V AC
  • Current Rating: 30A
  • Poles: 1
  • Phase: 1
  • AIC Rating: 35kA @ 277V
  • Connection: Bolt-On
  • Protection: Thermal Magnetic
  • Functions: LI (Long-Time and Instantaneous Trip)
  • Wire Size: AWS 8 to AWS 1/0, Copper or Aluminum
  • Temp Rating: -25 to 70 °C (-13 to 158 °F)
  • Weight: 1.257 lb
  • Standards: Designed to meet applicable industry standards for circuit protection.
  • Applications: Industrial and commercial panelboards, switchgear, feeder and branch circuit protection.


Product Identification
  • UPC: 783643558175
  • GTIN: 00783643558175