Eaton | LD3300W | Circuit Breaker | 300A | 3-Pole | 600V

The Eaton LD3300W circuit breaker is engineered for demanding three‑phase systems, delivering dependable protection for large loads in industrial panels and distribution gear. With a 300A rating and three poles, it’s built to handle robust power rails while keeping electrical faults contained and safe.

Key specifications

• Amperage: 300A
• Poles: 3‑Pole
• Voltage: 600V

Designed for maintenance, retrofit, and replacement

Whether you're upgrading an aging panel, performing a retrofit to support higher demand, or replacing a failed breaker, the LD3300W is a precise fit for compatible Eaton systems. Its design prioritizes reliable tripping performance and ease of installation within legacy infrastructure, helping you minimize downtime and restore full protection quickly.

Who benefits

• Facilities with three‑phase distribution needs, such as manufacturing floors, warehouses, and processing plants
• Data centers and critical load environments that require dependable circuit protection on main feeders and branch circuits
• Maintenance teams upgrading or maintaining Eaton panelboards and switchgear with matching specs

Why this matters

A 300A, 3‑pole device in a 600V class supports substantial three‑phase loads while maintaining coordinated protection across all phases. This reduces the risk of unbalanced fault conditions and helps protect downstream equipment, wiring, and personnel. The LD3300W is part of Eaton’s grounded approach to reliable, predictable overcurrent protection in industrial settings.

Compatibility and fit tips

Notes to ensure a seamless fit: always confirm fit and ratings before ordering. The part number LD3300W is the most reliable reference for compatibility with your panel or switchgear. If you’re aligning with an existing Eaton installation, using the exact part number helps ensure the breaker matches your bus design, mounting style, and trip characteristics.

Practical use cases

• Replacing a worn or tripped three‑phase breaker in an Eaton panel during a scheduled maintenance window
• Upgrading a feeder circuit to support higher three‑phase loads without changing the panel footprint
• Retrofit projects where maintaining consistent protection across all three phases is critical for equipment longevity

Care and installation notes

• Have a licensed electrician verify compatibility with your specific panel model and configuration
• Ensure power is fully de‑energized before removal or installation
• Follow manufacturer guidelines for mounting, wiring, and adjustment procedures to maintain rated protection