Square D EGB34080 - 80 A, 480 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Square D EGB34080 is a rugged, three‑pole bolt‑on molded case circuit breaker designed to safeguard three‑phase panelboards and load centers. Rated at 80 A and 480 V, this device provides dependable overcurrent and short‑circuit protection where reliable distribution matters most.

Built for enduring electrical environments, the secure bolt‑on mounting delivers a rigid, vibration‑resistant connection to the panel bus, helping prevent looseness and intermittently flaky performance over time. The thermal‑magnetic trip unit offers stable, repeatable protection: the thermal element handles sustained overloads with precision, while the magnetic element kicks in quickly during high‑fault conditions to shield wiring and equipment from damage.

This unit is engineered for compatibility with matching OEM load centers and panelboards, ensuring proper fit, electrical coordination, and straightforward installation in systems that rely on standardized Square D components.

Ideal for a range of settings, the EGB34080 suits residential, commercial, and light industrial applications where a dependable three‑phase interrupting solution is required. Use cases include distribution panels in office buildings, retail spaces, small manufacturing lines, and service entrances where robust three‑phase protection and disciplined bus connections are critical.

Key specifications at a glance

• Manufacturer: Square D
• Part Number: EGB34080
• Type: Thermal‑magnetic molded case circuit breaker
• Amperage Rating: 80 A
• Voltage Rating: 480 V
• Number of Poles: 3
• Mounting Style: Bolt‑on
• Application: Branch circuit overcurrent and short‑circuit protection

Practical guidelines: Pair the EGB34080 with compatible OEM panelboards for optimal performance, verify that the system is within the device’s 480 V three‑phase rating, and follow your panel manufacturer’s mounting and safety recommendations. When replacing or upgrading, ensure the rest of the protection scheme (wiring, downstream devices, and upstream protection) is coordinated to avoid nuisance tripping and maximize protection lifespan.