Square D EGB34020 - 20 A, 480 V, 3-Pole Bolt-On Circuit Breaker | AmpState

The Square D EGB34020 is a rugged 3-pole bolt-on molded case circuit breaker designed to protect your electrical distribution in panelboards and loadcenters. With a 20A rating and a 480V capacity, it serves as a reliable safeguard for 3-phase circuits in commercial and light industrial environments, while also suitable for select residential installations that demand higher voltage protection.

Key Features

• Secure bolt-on mounting delivers a rigid, vibration-resistant connection to the bus, helping maintain consistent electrical performance in equipment that experiences movement or vibration.
• Thermal-magnetic trip unit provides stable, repeatable protection against overcurrent and short-circuit faults, reducing nuisance trips and improving reliability.
• 3-pole design ideal for 3-phase systems, ensuring proper protection across all phases for balanced load distribution.
• 480V, 20A rating optimizes protection for higher-voltage panels and industrial feeders while matching common utility and equipment specifications.
• OEM compatibility engineered to work with matching Square D OEM load centers and panelboards, simplifying installation and serviceability.
• Molded case construction combines compact size with robust insulation and durability for demanding environments.

Applications and Use Cases

• Protecting branch circuits in commercial panelboards and light industrial distribution systems.
• Replacing or upgrading older bolted breakers in 3-phase panels that require dependable 480V protection.
• Protection for 3-phase equipment lines such as motors, conveyors, HVAC gear, and manufacturing controls operating at 480V.
• Residential projects that involve higher-voltage distribution or specialized equipment requiring a 3-pole 480V solution.

Why this breaker matters

Rather than a generic safety component, the EGB34020 is a purpose-built solution that emphasizes a solid electrical connection and predictable protection behavior. The bolt-on design minimizes connection loosening from vibration, while the thermal-magnetic trip’s precise thresholds help you avoid unexpected outages and downtime. When you need dependable branch circuit protection for 3-phase, high-voltage systems, this breaker delivers consistent performance and straightforward integration with existing Square D panelboards.

Technical Specifications

• Manufacturer: Square D
• Part Number: EGB34020
• 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

In practical terms, choose the Square D EGB34020 when you need a dependable, high-visibility 3-pole solution that blends seamless compatibility with panelboard assemblies and robust protection for 3-phase loads operating at 480V. It’s a thoughtful, purpose-driven choice for professionals aiming to keep electrical systems safe, compliant, and running smoothly.