Westinghouse | LA3300S | Circuit Breaker | 300A | 3-Pole | 600V

Westinghouse LA3300S Circuit Breaker is a purpose-built solution for protecting high-demand, three-phase electrical systems. With a 300A rating, 3-pole design, and a 600V maximum, this breaker is engineered for maintenance, retrofit, and replacement projects where exact specifications matter.

Key specifications

• Amperage: 300 A
• Poles: 3-Pole
• Voltage rating: 600 V
• Compatibility reference: Part number LA3300S is the best reference for compatibility

Important note: Confirm fit and ratings before ordering. Use the part number LA3300S to verify compatibility with your panel or disconnect, as this ensures the exact match for reliable protection and easy replacement.

Why choose the LA3300S for your installation

• Precise fit for compatible panels: Designed to align with panels that support the LA3300S form and specifications, simplifying retrofit and replacement.
• Robust high-current protection: 300 A capacity provides dependable safeguarding for main feeders and critical loads in commercial or light industrial setups.
• Three-phase reliability: The 3-pole design ensures synchronized tripping across all phases, reducing imbalance risks in three-phase circuits.
• Practical for planned maintenance: A straightforward component swap in appropriate panels minimizes downtime during service or upgrades.

Ideal use cases

• Upgrading service panels or distribution boards that require a 300A, 3-pole, 600V breaker.
• Replacing a failed LA3300S in compatible Westinghouse or compatible-panel environments to restore full protective performance quickly.
• Retrofit projects involving 600V three-phase systems where precise current rating and form factor matter for panel compatibility.

Installation and safety tips

Before replacing any breaker, power down the equipment and follow standard lockout/tagout procedures. Verify that your panel’s catalog and the LA3300S specifications align. If in doubt, reference the part number LA3300S as the definitive compatibility check to avoid misfits and unnecessary downtime.

Making an informed choice

When exact specifications and reliable compatibility are non-negotiable, the Westinghouse LA3300S delivers a clearly defined solution for 300A, 3-pole, 600V applications. By focusing on the correct part number and verified fit, you ensure lasting performance and a smoother maintenance cycle, minimizing surprises during installation and future servicing.