Square D EGB34050 - 50 A, 480 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Meet the Square D EGB34050 — a 50A, 480V, 3-pole bolt-on molded case circuit breaker designed to deliver dependable branch-circuit overcurrent and short-circuit protection in panelboards and load centers. Built for real-world electrical environments, this unit combines robust mounting with precise protection curves to keep installations safe and operational.

• Secure bolt-on mounting provides a rigid, vibration-resistant connection to bus bars, reducing movement and ensuring consistent electrical contact even in demanding setups.
• Thermal-magnetic trip unit delivers stable, repeatable protection by sensing both overloads and short circuits, so you get predictable performance across varying loads and temperatures.
• OEM-compatible design is engineered to pair with matching Square D load centers and panelboards, simplifying replacement and expansion without compatibility concerns.
• Versatile applications suitable for residential, commercial, and light industrial environments where reliable 3-phase protection at 480V is required.

Technical snapshot

• Manufacturer: Square D
• Part Number: EGB34050
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 50A
• Voltage Rating: 480V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Why this matters in the field: when distribution panels and load centers serve critical equipment or busy commercial spaces, predictable protection is essential. The EGB34050’s bolt-on design minimizes vibrations that can loosen connections over time, while the thermal-magnetic trip mechanism quickly clears faults without nuisance trips during normal operation. In practice, this means less downtime, safer electrical distribution, and straightforward maintenance or expansion for your 3-phase 480V systems.

Ideal use scenarios

• Upgrading or stocking spare parts for 480V three-phase panelboards and load centers in commercial facilities, schools, or light industrial sites.
• New installations where a reliable 3-pole, 50A bolt-on MCCB is needed to protect branch circuits from overloads and short circuits.
• Retrofits or repairs in existing Square D or OEM-matched panels to maintain electrical tolerance and protection schemes.

Designed with practical field needs in mind, the Square D EGB34050 combines a rugged bolt-on interface with precise thermal-magnetic protection to deliver consistent, easy-to-manage circuit protection. If you’re building or maintaining 480V 3-phase distributions, this breaker provides a dependable, OEM-compatible solution that aligns with standard panelboard configurations and practical protection requirements.