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Federal Pacific NB3P40 - 3-Pole 40A Circuit Breaker (10kA AIC @ 240V)

Federal Pacific
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Federal Pacific NB3P40 is a molded case circuit breaker designed for providing reliable overcurrent protection in three-phase industrial electrical systems. It features a 40A current rating and a 240V AC voltage rating, housed within a compact, durable molded case measuring 78.49 mm in depth and 112.78 mm in width with a weight of 1 lb. This CSA-certified device employs a thermal-magnetic protection mechanism with long-time and instantaneous (LI) trip functions, offering a 10kA interrupting capacity at 240V. Its three-pole, bolt-on configuration is engineered for secure installation, accommodating wire sizes from AWG 14 to AWG 1/0 for both aluminum and copper conductors in commercial and industrial panelboards.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, NB Series, Thermal-Magnetic Protection
  • Voltage Rating: 240V AC
  • Current Rating: 40A
  • Poles: 3
  • Phase: 3
  • AIC Rating: 10kA @ 240V
  • Connection: Bolt-On
  • Protection Functions: Long-Time and Instantaneous (LI)
  • Wire Size Compatibility: AWG 14 to AWG 1/0 (Aluminum/Copper)
  • Dimensions: 3.09 in (78.49 mm) Depth x 4.44 in (112.78 mm) Width
  • Weight: 1 lb
  • Certification: CSA
  • Frame: NB Series