Eaton HLD3300W - 300 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

The Eaton HLD3300W stands as a robust, three‑pole bolt‑on molded case circuit breaker designed to safeguard electrical systems with precision and reliability. With a 300 A rating and a 600 V maximum, this unit is built to handle demanding branch circuits in panelboards and loadcenters, delivering dependable overcurrent and short‑circuit protection where it matters most.

• Secure bolt‑on mounting provides a rigid, vibration‑resistant bus connection that remains tight under demanding conditions, reducing the risk of loose connections and intermittent trips.
• Thermal‑magnetic trip unit delivers stable, repeatable protection by combining a fast magnetic response for short circuits with a precise thermal curve for overloads, maintaining consistent performance across varying loads and temperatures.
• OEM‑compatible design is engineered to pair with matching OEM loadcenters and panelboards, simplifying upgrades, replacements, and service workflows without compatibility headaches.
• Three‑pole configuration supports typical three‑phase distribution needs found in commercial and light industrial applications, while maintaining a compact footprint suitable for standard panels.
• Versatile electrical protection targets branch circuit overcurrent and short‑circuit scenarios, helping prevent damage to downstream equipment and reducing downtime.

Technical specifications

• Manufacturer: Eaton
• Part Number: HLD3300W
• Type: Thermal‑magnetic molded case circuit breaker
• Amperage Rating: 300 A
• Voltage Rating: 600 V
• Number of Poles: 3
• Mounting Style: Bolt‑on
• Application: Branch circuit overcurrent and short‑circuit protection

Practical use and value

Whether you’re wiring a residential service upgrade, a commercial distribution panel, or a light industrial subpanel, the HLD3300W delivers clear advantages. The bolt‑on design makes installation and maintenance straightforward in tight spaces or vibration‑prone environments, while the thermal‑magnetic protection curve helps minimize nuisance trips during temperature swings or surge events. Its compatibility with OEM loadcenters means you can confidently upgrade or replace breakers without compatibility concerns, ensuring consistent protection across your electrical system.

Who this is for

Electricians, facilities managers, and maintenance teams looking for a rugged, reliable 3‑pole breaker for 600 V distribution networks will appreciate the HLD3300W. It’s well suited for panelboards and loadcenters in residential settings with commercial loads, small to mid‑sized commercial installations, and light industrial environments where dependable, long‑term circuit protection is essential.

Why choose this Eaton breaker

Unlike generic alternatives, the HLD3300W combines a solid mechanical connection with a sophisticated protection mechanism. The bolt‑on mounting reduces the risk of loosening in vibration‑heavy installations, while the thermal‑magnetic trip unit delivers consistent protection across diverse operating conditions. This means fewer trips, faster serviceability, and a safer, more reliable electrical distribution system—backed by Eaton’s engineering and compatibility with OEM lineups.