Eaton CHB3090 - 90 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Meet the Eaton CHB3090—a purpose-built 90 A, 240 V, 3-pole bolt-on molded case circuit breaker designed to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Built for performance in real-world electrical environments, this unit combines rugged mounting with precise protection to keep your systems running safely and reliably.

Why the CHB3090 stands out

• Secure bolt-on mounting provides a rigid, vibration-resistant bus connection that stays tight under operation, reducing contact movement and ensuring consistent electrical performance.
• Thermal-magnetic trip unit delivers stable, repeatable protection by reacting to overload (thermal) and short-circuit (magnetic) conditions, helping to avoid nuisance trips in varying temperatures and load conditions.
• OEM-compatible design is engineered to work with matching OEM load centers and panelboards, simplifying retrofits and ensuring a clean, reliable fit in your enclosure.
• Ideal for multiple applications from residential to commercial and light industrial environments, where robust protection for large branch circuits and three-phase equipment is essential.

Technical snapshot

• Manufacturer: Eaton
• Part Number: CHB3090
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 90 A
• Voltage Rating: 240 V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Practical use cases

• Protect three-phase feeders and heavy loads in commercial panelboards, including lighting, motors, and HVAC equipment.
• Upgrade or retrofit existing panelboards with a secure bolt-on solution that remains firmly connected in environments with vibration or movement.
• Serve as a reliable protection device for light industrial electrical installations where steady trip performance is critical across temperature swings.
• Pair with matching Eaton load centers for a cohesive, OEM-tested protection scheme that minimizes compatibility concerns.

Benefits in everyday operation

• Reduced nuisance tripping thanks to a balanced thermal-magnetic trip curve that respects ambient conditions.
• Durable construction designed to withstand the rigors of commercial and light industrial settings.
• Simplified maintenance and replacement within compatible panelboards due to straightforward bolt-on mounting.
• Clear, dependable protection for large branch circuits without compromising space or layout in crowded panels.

Installation and compatibility guidance

The CHB3090 is designed for bolt-on installation in suitable panelboards and load centers that accept 3-pole molded case breakers. For best results, ensure the enclosure is compatible with Eaton’s CHB series and follow the panel manufacturer’s torque and mounting guidelines. This unit delivers reliable protection while integrating smoothly into OEM configurations, making it a strong choice for both new builds and upgrades.

Who benefits most

Electrical professionals working on residential multi-family buildings, commercial facilities, and light industrial sites who need a durable, dependable 3-pole protection device that can endure vibration and temperature variations while delivering precise overcurrent and short-circuit protection.