EJB34040SA - Schneider Electric (Square D) 3-Pole 40 A 480Y/277 V AC Bolt-On Circuit Breaker with Shunt Trip, Type EJB

EJB34040SA

EJB34040SA is a bolt-on molded case circuit breaker with a factory-installed shunt trip, manufactured by Schneider Electric (Square D). It is a Type EJB breaker rated for 40 A, 3 poles, and 480Y/277 V AC. The integrated shunt trip allows remote tripping using an external control signal, making it ideal for emergency power-off (EPO) systems and automated power control applications. This breaker provides thermal-magnetic protection for overloads and short circuits, ensuring dependable operation in commercial and industrial systems. Designed for bolt-on installation in NF and NQ panelboards, it delivers reliable performance for control panels, power distribution, and remote disconnect circuits.

• Part Number: EJB34040SA
• Manufacturer: Schneider Electric (Square D)
• Product Type: Bolt-On Thermal-Magnetic Circuit Breaker with Shunt Trip
• Type: EJB
• Poles: 3
• Amperage Rating: 40 A
• Voltage Rating: 480Y/277 V AC
• Interrupting Rating: 18 kA @ 480Y/277 V AC
• Trip Unit: Fixed thermal-magnetic
• Accessory: Factory-installed shunt trip
• Mounting: Bolt-on (for NF/NQ panelboards)
• Application: Remote tripping, EPO systems, and control circuit safety shutdowns
• Certifications: UL 489 Listed, CSA Certified

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Specifications

• Part Number: EJB34040SA
• Manufacturer : Schneider Electric
• Brand : Square D
• Category : Circuit Breaker
• Item Subcategory : Molded Case
• Family : EJB Series
• Voltage : 480
• Amperage : 40
• Phase : 3
• Poles : 3
• AIC rating : 65kA@480V
• Functions : Long-Time and Instantaneous Trip
• Temp Rating : -13–158 °F (-25–70 °C)
• Protection : Thermal Magnetic

Product Data

• UPC : 785901777021
• GTIN : 00785901777021
• Country of Origin : Mexico
• Dimensions : 5.66 in (143.76 mm) x 3.92 in (99.57 mm) x 4.05 in (102.87 mm) (Height x Width x Depth)
• Weight : 4.34
• Wire Size : AWG 12 to AWG 2/0, Aluminum, AWG 14 to AWG 2/0, Copper