Square D EJB34020SA - 20 A, 480 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Square D EJB34020SA is a 20A, 480V, 3-pole bolt-on molded case circuit breaker designed for dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers.

Built to endure real-world electrical environments, this breaker features:

• Secure bolt-on mounting for a rigid, vibration-resistant bus connection, reducing movement and maintaining consistent contact under operation.
• Thermal-magnetic trip unit delivering stable, repeatable protection against overcurrent and fast response to short circuits.
• 3-pole, 480V design suitable for three-phase distribution in commercial and light industrial settings.
• OEM-compatible fit with matching load centers and panelboards, ensuring proper coordination and ease of replacement.
• Versatile applications suitable for residential, commercial, and light industrial installations needing reliable branch-circuit protection.

Technical specifications at a glance:

• Manufacturer: Square D
• Part Number: EJB34020SA
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 20A
• Voltage Rating: 480V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Why this matters in practice: In panelboards and load centers, secure mounting and a precise trip curve translate to fewer nuisance trips, quicker fault interruption, and longer service life for your electrical distribution system. If you’re upgrading or replacing a 3-pole, high-voltage breaker, the EJB34020SA offers OEM-grade reliability within a compact bolt-on package.