Square D EJB14045 - Molded Case Breaker 45A 277V (65kA AIC)
Square D EJB14045 - Molded Case Breaker 45A 277V (65kA AIC)

Square D EJB14045 - Molded Case Breaker 45A 277V (65kA AIC)

Square D
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Square D EJB14045 is a molded case circuit breaker designed for providing reliable overcurrent and short-circuit protection in industrial and commercial electrical systems. It features a 45A current rating and a 277V AC voltage rating, housed in a compact, single-pole bolt-on configuration measuring 143.76 mm H x 24.89 mm W x 102.87 mm D and weighing 1.301 lb. The breaker is cULus certified for safety and operates on a thermal-magnetic trip mechanism providing both long-time and instantaneous trip functions within a temperature range of -25 to 70 °C. Its 65kA interrupting rating at 480V AC makes it suitable for installation in NF panelboards, protecting circuits with wire sizes from AWG 14 to 2/0 for both copper and aluminum conductors.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal-Magnetic Protection, Bolt-On Connection
  • Voltage Rating: 277V AC
  • Current Rating: 45A
  • Dimensions: 5.66 in H (143.76 mm) x 0.98 in W (24.89 mm) x 4.05 in D (102.87 mm)
  • Standards: cULus Certified
  • Applications: NF Panelboards, Industrial & Commercial Distribution
  • Poles: 1
  • Phase: 1
  • AIC Rating: 65kA @ 480V AC
  • Connection: Bolt-On
  • Protection: Thermal Magnetic
  • Functions: Long Time and Instantaneous Trip
  • Panel Type: NF panelboard
  • Temp Rating: -13 to 158 °F (-25 to 70 °C)
  • Wire Size: AWG 12 to AWG 2/0, AWG 14 to AWG 2/0 (Aluminum, Copper)
  • Weight: 1.301 lb


Product Identification
  • UPC: 785901130550
  • GTIN: 00785901130550