Square D EGB34015 - 15 A, 480 V, 3-Pole Bolt-On Circuit Breaker | AmpState

The Square D EGB34015 is a purpose-built 15A, 480V, 3-pole bolt-on molded case circuit breaker that delivers dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Designed for enduring performance in demanding environments, this unit combines rugged construction with precise protection logic to keep electrical systems safe and operational.

What makes this breaker stand out

• Secure bolt-on mounting provides a rigid, vibration-resistant bus connection, helping maintain consistent electrical contact and reducing the risk of loose connections in fluctuating environments.
• Thermal-magnetic trip unit delivers stable, repeatable protection by responding appropriately to both overloads and short circuits, helping to minimize nuisance trips and protect sensitive equipment.
• OEM compatibility designed to pair with matching Square D load centers and panelboards, ensuring reliable fit and streamlined maintenance in established electrical systems.
• Versatile applications suitable for residential, commercial, and light industrial installations where robust 3-phase protection at 480V is required.

Technical snapshot

• Manufacturer: Square D
• Part Number: EGB34015
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 15A
• Voltage Rating: 480V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Ideal use cases and practical benefits

In commercial spaces with 3-phase distribution, the Square D EGB34015 fits seamlessly into panelboards and load centers that require reliable 480V protection. It’s an excellent choice for retrofits or new installations in offices, retail environments, small manufacturing, or data-related infrastructure where stable protection and solid mechanical mounting matter most.

How this model compares within a system

Compared to plug-in alternatives, the bolt-on design of the EGB34015 offers a more rigid connection that stands up to vibration and electrical noise common in industrial settings. The 3-pole configuration ensures coordinated protection across all phases in 3-phase circuits, while the thermal-magnetic trip unit provides dependable performance without the need for additional calibration.

If you’re upgrading panel infrastructure or stocking spare components for maintenance-ready facilities, the Square D EGB34015 delivers a precise balance of protection, reliability, and OEM compatibility. Pair it with compatible load centers to maintain system integrity and protect critical branch circuits with confidence.