Eaton CH3080ST - 80 A, 480 V, 3-Pole Bolt-On Circuit Breaker | AmpState

The Eaton CH3080ST is a rugged 3-pole molded case circuit breaker engineered for dependable branch circuit protection in panelboards and loadcenters. With an 80 A rating at 480 V, this bolt-on device is built to handle the demands of three-phase distributions found in commercial and light industrial environments, while still meeting the needs of select higher-demand residential applications.

Why this breaker stands out

• Secure bolt-on mounting delivers a rigid, vibration-resistant bus connection that stays put even in equipment with heavy loads or mechanical activity.
• Thermal-magnetic trip unit provides stable, repeatable protection across a range of temperatures and operating conditions, reducing nuisance trips and improving overall system reliability.
• 3-pole design is ideal for 480 V three-phase systems, ensuring coordinated protection for all phases of your distribution network.
• OEM compatibility is designed to work with matching Eaton OEM loadcenters and panelboards, helping maintain proper fit, trip characteristics, and electrical coordination.
• Versatile application suitable for residential, commercial, and light industrial installations where robust overcurrent and short-circuit protection is essential.

Technical specifications at a glance

• Manufacturer: Eaton
• Part Number: CH3080ST
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 80 A
• Voltage Rating: 480 V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Ideal applications and use cases

Use the CH3080ST in panelboards and loadcenters that match Eaton’s bolt-on, 3-pole, 480 V configuration. It’s a solid choice for:

• Commercial electrical rooms with 3-phase distribution to lighting, HVAC, and outlets
• Light industrial equipment panels that benefit from secure mounting and reliable trip performance
• Residential systems requiring higher-capacity protection for multi-zone or higher-load panels

Installation considerations and practical tips

Plan for a bolt-on installation where OEM-compatible panelboards are specified. Ensure the enclosure and bus connections are clean and free of contaminants to maintain a solid, vibration-resistant connection. Regular inspection of mounting hardware can help preserve long-term reliability in environments with equipment vibration or periodic maintenance cycles.

Compared to common alternatives

Compared with plug-in or non-bolt-on breakers, the CH3080ST’s bolt-on design provides a more rigid connection to the bus, which translates to lower risk of micro-movements during operation and better resistance to vibration. Its thermal-magnetic trip unit delivers dependable performance across varying loads and temperatures, helping you coordinate protection with upstream devices and reduce false trips in dynamic electrical spaces.

In short, the Eaton CH3080ST is a purpose-built solution for robust 80 A, 480 V, 3-pole protection in panelboards and loadcenters, delivering secure installation, predictable protection, and lasting reliability for residential, commercial, and light industrial electrical systems.