Square D EGB16020 - 20 A, 277 V, 1-Pole Bolt-On Circuit Breaker | AmpState

The Square D EGB16020 from AmpState is a reliable 20A, 277V, 1-pole bolt-on molded case circuit breaker designed for dependable branch circuit protection in panelboards and load centers. Built to stand up to the demands of everyday electrical systems, it combines solid mounting with precise protection features to keep circuits safe and performing consistently.

Key features that matter in the real world

• Secure bolt-on mounting delivers a rigid, vibration-resistant connection to bus bars, reducing looseness and improving long-term reliability in demanding environments.
• Thermal-magnetic trip unit provides stable, repeatable protection by addressing both overloads (thermal) and short circuits (magnetic) without nuisance trips.
• 1-pole, 20A, 277V specification is ideal for individual branch circuits in commercial spaces with 277V lighting or equipment circuits.
• OEM-compatible design works with matching Square D load centers and panelboards for seamless replacement or upgrades.
• Versatile applications suited for residential, commercial, and light industrial installations where reliable overcurrent and short-circuit protection is essential.

Why this breaker fits real-world needs

When wiring panels in commercial buildings or upgrades in residential settings, you want a breaker that won’t back down under vibration or heat. The EGB16020’s bolt-on architecture ensures a solid bus connection, reducing the risk of loose contacts that can cause intermittent trips. The thermal-magnetic trip mechanism reacts quickly to faults, helping protect wiring, devices, and downstream circuits from damage.

Practical use cases

• Upgrading legacy panelboards to modern, reliable protection for 277V lighting and receptacle circuits.
• Installing new 277V circuits in small to mid-size commercial spaces, such as offices, retail, or service areas.
• Replacing aging breakers in residential subpanels where a compact, single-pole solution is needed.
• Retrofitting panel centers in light industrial environments where robust mounting and dependable trip performance matter.

Technical snapshot

• Manufacturer: Square D
• Part number: EGB16020
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 20A
• Voltage rating: 277V
• Number of poles: 1
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Choose the Square D EGB16020 for a dependable, OEM-compatible solution that delivers consistent protection and straightforward integration into panelboards and load centers. It’s an intelligent choice for installers prioritizing safety, reliability, and long-term performance in 277V electrical systems.