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Square D EJB26040 - Molded Case 40A 2-Pole Breaker (600V)

Square D
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Square D EJB26040 is a 2-pole molded case circuit breaker from the EJB Series, designed to provide thermal-magnetic overcurrent protection for branch circuits and lighting applications in industrial and commercial power distribution systems. It is rated for 40A at up to 600Y/347 VAC, with an interrupting capacity of 65kA at 480V, and features LI (Long-Time and Instantaneous) trip functions. The breaker measures 5.66 in (143.76 mm) in height, 1.96 in (49.78 mm) in width, and 4.05 in (102.87 mm) in depth, weighs 2.54 lb, and uses a bolt-on connection for secure installation in NF panelboards. It is cULus certified and HACR rated, calibrated for operation at 104 °F (40 °C), and accepts aluminum wire from AWG 12 to AWG 2/0 and copper wire from AWG 14 to AWG 2/0. This E-frame breaker is suitable for demanding environments requiring reliable overcurrent protection in panelboard installations.

Key Features & Specifications
  • Type: EJB
  • Item Subcategory: Molded Case
  • Family: EJB Series
  • Country of Origin: Mexico
  • Dimensions: 5.66 in (143.76 mm) x 1.96 in (49.78 mm) x 4.05 in (102.87 mm) (Height x Width x Depth)
  • Weight: 2.54 lb
  • Functions: LI - Long-Time and Instantaneous
  • Voltage Rating: 600V
  • Panel Type: NF panelboard
  • Poles: 2
  • Connection: Bolt-On
  • Protection: Thermal Magnetic
  • Wire Size: AWG 12...AWG 2/0 aluminum; AWG 14...AWG 2/0 copper
  • Certification: cULus
  • AIC rating: 65kA@480V
  • Phase: 1
  • Temp Rating: 104 °F (40 °C)
  • Current Rating: 40A
  • Interrupt Rating: 25 kA at 600Y/347 VAC; 65 kA at 480Y/277 VAC; 100 kA at 240 VAC
  • Frame Type: E-Frame
  • Terminal Lugs: Aluminum AWG 12 to AWG 2/0; Copper AWG 14 to AWG 2/0
  • Hold Current: 630A


Product Identification
  • UPC: 785901506577
  • GTIN: 00785901506577