Eaton LD3300W - 300 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

The Eaton LD3300W is a robust 3-pole bolt-on molded case circuit breaker designed to deliver dependable branch circuit protection in panelboards and load centers. With a 300 A rating and a 600 V capacity, it’s built to handle demanding commercial and light industrial loads while maintaining safe, predictable performance across a wide range of conditions.

Key advantages that set this breaker apart:

• Secure bolt-on mounting for a rigid, vibration-resistant bus connection that stays solid under heavy use and in environments with movement or mechanical vibration.
• Thermal-magnetic trip unit delivers stable, repeatable protection by combining overload sensing with fast short-circuit response, reducing nuisance trips and protecting both equipment and wiring.
• OEM-compatible design crafted to drop into matching Eaton OEM load centers and panelboards, simplifying replacement and serviceability without sacrificing performance.
• High-current capability 300 A at 600 V makes it ideal for feeders and branch circuits that power mid-sized commercial equipment or light industrial systems.

Technical snapshot

• Manufacturer: Eaton
• Part number: LD3300W
• Type: Thermal-magnetic molded case circuit breaker (MCCB)
• 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 cases

Use the Eaton LD3300W to protect feeders supplying critical loads in commercial panelboards and residential multi-family installations where a compact, reliable 3-pole solution is needed. It’s also well-suited for light industrial panels that demand sturdy, vibration-resistant mounting and consistent trip performance. In each scenario, you gain predictable protection curves, simplified maintenance, and OEM-ready compatibility that keeps installation time to a minimum.

Why choose this breaker

If you’re prioritizing reliability and serviceability in protection equipment, the LD3300W delivers. The bolt-on design reduces micro-movements that can degrade electrical connections over time, while the thermal-magnetic trip unit provides a balanced response to overloads and faults. Pair it with compatible Eaton load centers for seamless integration, long-term performance, and easier future replacements.

Whether you’re detailing a retrofit, outfitting a new installation, or stocking parts for ongoing service, the Eaton LD3300W 3-Pole Bolt-On Circuit Breaker is a purpose-built choice for safe, efficient, and scalable electrical protection.