Eaton GBH3020 20A 600V 3-Pole Circuit Breaker

The Eaton GBH3020 is a 3-pole bolt-on molded case circuit breaker designed for dependable branch circuit protection in panelboards and load centers. With a 20A rating and a 600V nominal voltage, it provides robust overcurrent and short-circuit protection where reliability matters most—in residential panels, commercial enclosures, and light industrial setups. The bolt-on mounting delivers a secure, vibration-resistant bus connection that maintains consistent electrical performance even in environments with movement or vibration.

• Secure bolt-on mounting — creates a rigid, vibration-resistant bus connection for long-term reliability.
• Thermal-magnetic trip unit — combines precise thermal overload protection with instantaneous magnetic trip for fast response to short circuits.
• OEM-compatible — designed to pair with matching Eaton OEM load centers and panelboards for seamless integration.
• Versatile applications — suitable for residential, commercial, and light industrial installations requiring dependable branch-circuit protection.

Why this matters

In panelboards and load centers, a solid connection and predictable protection are non-negotiable. The GBH3020’s bolt-on design minimizes the risk of loose connections that can drift under load or vibration, while the thermal-magnetic trip unit delivers stable, repeatable protection across a wide range of operating conditions. This means fewer nuisance trips and better protection for circuits feeding critical equipment, lighting, and outlets in both homes and business environments.

Technical snapshot

• Manufacturer: Eaton
• Part Number: GBH3020
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 20A
• Voltage Rating: 600V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Ideal use cases

• Residential panelboards needing reliable 3-pole protection for 3-phase equipment or multi-wire branch circuits.
• Commercial enclosures where vibration resistance and secure mounting protect critical loads like lighting, outlets, and small motors.
• Light industrial panels requiring a robust, compatible 3-pole breaker that seamlessly matches OEM load centers.

Installation and compatibility tips

Choose the GBH3020 when your panelboard or load center calls for a 3-pole, 20A breaker with bolt-on mounting. Ensure alignment with the OEM family for a clean, code-compliant installation. Because of its thermal-magnetic trip, this breaker reacts quickly to short circuits while preventing nuisance trips from brief overloads, making it well-suited for mixed-load environments with varying current demands.