EJB34050SA - Schneider Electric (Square D) 3-Pole 50 A 480Y/277 V AC Bolt-On Circuit Breaker with Shunt Trip, Type EJB

EJB34050SA

EJB34050SA 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 50 A, 3 poles, and 480Y/277 V AC. The integrated shunt trip allows remote tripping through external control signals, making it ideal for emergency power-off (EPO) systems and automated safety shutdowns. This breaker provides thermal-magnetic protection against overloads and short circuits, ensuring reliable power distribution in industrial and commercial environments. Designed for bolt-on installation in NF and NQ panelboards, it offers dependable performance for remote disconnect and control system applications.

• Part Number: EJB34050SA
• Manufacturer: Schneider Electric (Square D)
• Product Type: Bolt-On Thermal-Magnetic Circuit Breaker with Shunt Trip
• Type: EJB
• Poles: 3
• Amperage Rating: 50 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 automated shutdown control
• Certifications: UL 489 Listed, CSA Certified

At Essential Parts, we offer fast shipping, lowest price, and expert support to help you get the right product every time.

Specifications

• Part Number: EJB34050SA
• Manufacturer : Schneider Electric
• Brand : Square D
• Category : Circuit Breaker
• Item Subcategory : Molded Case
• Family : EJB Series
• Voltage : 480
• Amperage : 50
• Phase : 3
• Poles : 3
• AIC rating : 65kA@480V
• Connection : Bolt-On
• Functions : Long-Time and Instantaneous Trip
• Temp Rating : -13–158 °F (-25–70 °C)
• Protection : Thermal Magnetic

Product Data

• UPC : 785901648659
• 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
• Certification : cULus
• Wire Size : AWG 12 to AWG 2/0, Aluminum, AWG 14 to AWG 2/0, Copper