Square D EGB24090 - 90 A, 480 V, 2-Pole Bolt-On Circuit Breaker | AmpState

Meet the Square D EGB24090 — a rugged 90 A, 480 V, 2-pole bolt-on molded case circuit breaker designed to deliver dependable branch-circuit protection in panelboards and load centers. Built for commercial and light-industrial environments, it combines solid mechanical construction with precise electrical protection to keep critical circuits safe and operational.

Why this breaker stands out in real-world installations:

• Secure bolt-on mounting: A rigid, vibration-resistant bus connection that stays tight over years of operation, reducing the risk of loose connections and nuisance trips in busy electrical rooms or equipment bays.
• Thermal-magnetic trip unit: The dual-action protection responds to overloads with a predictable thermal element and delivers fast magnetic tripping for short circuits, providing stable, repeatable protection across varying temperatures.
• OEM-fit compatibility: Specifically designed to pair with Square D OEM load centers and panelboards, ensuring proper alignment, conductor routing, and listed electrical performance without the need for adapters.
• Versatile 2-pole, 480 V design: Ideal for 480 V circuits in commercial and light-industrial settings, safeguarding two hot conductors in a single, reliable device.
• Residential, commercial, and light-industrial use: Suitable for a range of applications—from small offices to mid-size warehouses and service panels—where 90 A protection at 480 V is required.

Technical snapshot

• Manufacturer: Square D
• Part number: EGB24090
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 90A
• Voltage rating: 480V
• Number of poles: 2
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Practical use cases and installation scenarios

• New panel installations in commercial electrical rooms where 480 V feeders require solid two-pole protection.
• Retrofits in existing Square D panelboards that require compatible, bolt-on breakers for a secure bus connection.
• Loadcenter upgrades for lightweight industrial equipment or large commercial fixtures that draw up to 90 A at 480 V.

Tips for optimal performance

• Always verify compatibility with your specific panelboard model and follow the manufacturer's installation guidelines for torque and mounting practices.
• Maintain proper clearance and ensure panel access during maintenance to keep the bolt-on connection clean and tight.
• Consider stocking matching Square D OEM components to preserve listing and warranty coverage.