Square D EGB16015 - 15 A, 347 V, 1-Pole Bolt-On Circuit Breaker | AmpState

Square D EGB16015 – a 15A, 347V, 1-pole bolt-on molded case circuit breaker from AmpState. Designed to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers, this breaker combines robust construction with precise protection for demanding commercial and light industrial environments.

• Secure bolt-on mounting: a rigid, vibration-resistant bus connection minimizes movement and loosening, helping maintain consistent electrical performance in panels that endure vibration or movement.
• Thermal-magnetic trip unit: integrated thermal and magnetic mechanisms provide stable, repeatable protection—auto-adjusting to overload conditions while delivering fast response to short circuits.
• OEM-compatible: engineered to pair with matching Square D OEM load centers and panelboards, ensuring smooth installation and reliable protection without compatibility surprises.
• Versatile for multiple environments: ideal for residential, commercial, and light industrial applications where 347V distribution is present and single-pole protection fits the circuit layout.

Technical specs at a glance

• Manufacturer: Square D
• Part Number: EGB16015
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 15A
• Voltage Rating: 347V
• Number of Poles: 1
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

This breaker is a practical choice for technicians upgrading or expanding panelboards where a reliable, single-pole 347V protection device is required. Its bolt-on design speeds installation while maintaining a solid, vibration-resistant connection to the bus, helping reduce nuisance trips caused by loose hardware in busy electrical rooms.

Who benefits most

• Electrical contractors performing commercial or light industrial panel work with 347V systems
• Facility managers seeking dependable, easy-to-replace protection for specific branch circuits
• Maintenance teams replacing aging breakers in OEM-compatible panels

Practical use cases and tips

• Use in clean, well-ventilated panel enclosures where single-pole protection is needed for lighting circuits or auxiliary loads connected to 347V systems
• Pair with matching Square D panelboards to minimize compatibility concerns and ensure consistent trip characteristics across the distribution system
• When installing, secure the bolt-on connection firmly to maintain a stable bus contact; follow the panel manufacturer’s mounting guidance and avoid introducing mechanical stress on the terminals