Square D EGB14030 - 30 A, 277 V, 1-Pole Bolt-On Circuit Breaker | AmpState

The Square D EGB14030 is a 30A, 277V, 1-pole bolt-on molded case circuit breaker designed to deliver reliable branch circuit protection in panelboards and load centers. Built for performance in demanding environments, it combines a secure bolt-on mounting with a thermally-magnetic trip system to maintain stable protection across a range of operating conditions.

• Secure bolt-on mounting provides a rigid connection to the bus, helping resist vibration-induced loosening and maintaining consistent electrical contact over time.
• Thermal-magnetic trip unit delivers stable, repeatable protection by automatically responding to both overloads and short-circuit events, helping safeguard wiring and connected equipment.
• Durable molded case design offers dependable performance in panelboards and load centers, tolerating the demands of residential, commercial, and light industrial applications.
• OEM-compatible engineered to be compatible with matching Square D OEM loadcenters and panelboards, simplifying replacement and upgrades without sacrificing fit or function.
• Versatile use cases ideal for commercial lighting circuits, feeders, and other 277V branch circuits where compact, reliable protection is essential.

What it protects: This 1-pole breaker serves as the essential safeguard for a single branch circuit, interrupting current flow during overloads or short circuits to prevent damage to wiring and connected devices in residential, commercial, and light industrial environments.

Technical snapshot (part number, type, and ratings you’ll rely on):

• Manufacturer: Square D
• Part Number: EGB14030
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 30A
• Voltage Rating: 277V
• Number of Poles: 1
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Practical tips for installation and selection: Ensure your panelboard or load center accepts bolt-on, single-pole breakers and matches the Square D OEM specification. Use in applications where 277V circuits are common—such as certain commercial lighting and equipment feeds—and prioritize a snug, vibration-resistant connection for long-term reliability. Always engage a qualified electrician when replacing or installing breakers to maintain safety and code compliance.