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Siemens NEB1B040B - Molded Case 40A 277V 1-Pole

Siemens
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Siemens NEB1B040B is a 1-pole molded case circuit breaker from the NEB Series, designed for thermal-magnetic overcurrent protection in industrial applications. It is rated for 40A continuous current at 277VAC with a 35kA interrupting capacity at 277V, providing LI (Long-Time and Instantaneous) trip functions for precise fault response. The unit features a bolt-on connection, weighs 1.257 lb, and is constructed for single-phase systems. This breaker complies with applicable UL and NEMA standards for molded case circuit breakers. Typical applications include branch circuit protection in panelboards, switchboards, and industrial control panels.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal Magnetic
  • Voltage Rating: 277V
  • Current Rating: 40A
  • Poles: 1
  • Connection: Bolt-On
  • Protection: LI - Long-Time and Instantaneous
  • AIC rating: 35kA@277V
  • Phase: 1
  • Weight: 1.257 lb
  • Family: NEB Series
  • Country of Origin: Dominican Republic


Product Identification
  • UPC: 783643558199
  • GTIN: 00783643558199