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American/Federal Pacific NEF421040 - Molded Case 40A 2-Pole 480V

American/Federal Pacific
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American/Federal Pacific NEF421040 is a 2-pole molded case circuit breaker from the NEF Series, designed for overcurrent protection in industrial electrical systems. It is rated for 40A continuous current at 480V AC with a 14kA interrupting capacity at 480V, providing thermal-magnetic protection with long-time and instantaneous (LI) trip functions. The unit features a bolt-on connection, weighs 2 lb, and is constructed for single-phase applications. This breaker complies with industry standards for molded case circuit breakers and is suitable for use in panelboards and distribution equipment within commercial and light industrial environments.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, NEF Series, Thermal Magnetic
  • Voltage Rating: 480V AC
  • Current Rating: 40A
  • Poles: 2
  • Phase: 1
  • AIC Rating: 14kA@480V
  • Connection: Bolt-On
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Weight: 2 lb
  • Circuit Breaker Mounting Style: Bolt-On
  • Terminal Connection: Bolt-On
  • Frequency Rating: 60 Hz
  • Phase Connection: Single Phase
  • Standards: UL Listed, CSA Certified
  • Installation Type: Fixed
  • Breaker Frame: NEF
  • Trip Type: Thermal Magnetic
  • Panel Type: NEF Series
  • Breaker Type: Molded Case
  • Metal Type: Steel
  • Panel Style: NEF
  • Bus Type: Copper
  • Insulation Temperature: 75°C
  • Mounting: Bolt-On
  • Hz: 60
  • Horse Power: 10 HP at 240V
  • Enclosure: Open
  • Wire Size: #14 AWG to #8 AWG
  • Certification: UL 489
  • Compatible Frames: NEF
  • Item QTY: 1
  • Current Rating: 40A
  • Operating Temperature Maximum Celsius: 40°C


Product Identification
  • UPC: 786725021234
  • GTIN: 00786725021234