Square D EJB34045 - 45A 3-Pole Circuit Breaker (65kA AIC)
Square D EJB34045 - 45A 3-Pole Circuit Breaker (65kA AIC)
Square D EJB34045 - 45A 3-Pole Circuit Breaker (65kA AIC)
Square D EJB34045 - 45A 3-Pole Circuit Breaker (65kA AIC)

Square D EJB34045 - 45A 3-Pole Circuit Breaker (65kA AIC)

Square D
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Square D EJB34045 is a molded case circuit breaker designed for providing reliable overcurrent and short-circuit protection in three-phase electrical systems. It features a 45A current rating and a 480V AC voltage rating, housed within a compact, bolt-on unit measuring 143.76 mm H x 74.68 mm W x 102.87 mm D and weighing 3.45 lb. This thermal-magnetic breaker, certified to cULus standards, offers a 65kA interrupting capacity at 480V and operates across a temperature range of -25 to 70 °C. It is engineered for installation in NF-style panelboards, protecting conductors from AWG 14 to 2/0 copper or AWG 12 to 2/0 aluminum in demanding industrial and commercial applications.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal-Magnetic Protection, Bolt-On Connection
  • Voltage Rating: 480V AC
  • Current Rating: 45A
  • Dimensions: 5.66 in (143.76 mm) H x 2.94 in (74.68 mm) W x 4.05 in (102.87 mm) D
  • Standards: cULus Certified
  • Applications: Three-Phase Power Distribution in NF Panelboards
  • Poles: 3
  • Phase: 3
  • AIC Rating: 65kA @ 480V
  • Connection: Bolt-On
  • Protection: Thermal Magnetic
  • Functions: LI (Long-Time and Instantaneous Trip)
  • Panel Type: NF panelboard
  • Temp Rating: -13 to 158 °F (-25 to 70 °C)
  • Wire Size: AWG 12 to 2/0 Aluminum, AWG 14 to 2/0 Copper
  • Weight: 3.45 lb


Product Identification
  • UPC: 785901130628
  • GTIN: 00785901130628