Square D LA363501021 350A 3-Pole 600 V Circuit Breaker

Square D LA363501021 350A 3-Pole 600 V Circuit Breaker is a high-capacity protective device engineered for demanding three-phase electrical systems. With a robust 350 amp current rating, three poles, and a 600-volt maximum, this breaker is built to shield expensive equipment and wiring from overloads and fault currents in industrial and commercial environments. Part Number LA363501021, it carries the reliability and engineering legacy of Square D, a trusted name in electrical protection.

Key specifications

• Part number: LA363501021
• Current rating: 350 A
• Poles: 3
• Voltage rating: 600 V
• Brand: Square D

Why this matters

In three-phase systems, a high-capacity circuit breaker like this one plays a critical role in preventing damage from overloads and short circuits. It stops fault currents quickly, helping to protect downstream equipment, cabling, and the overall electrical infrastructure. The 600 V rating makes it suitable for a range of industrial feeders and panelboard applications where higher voltage levels are present.

Ideal applications

• Industrial facilities with heavy motor loads and large equipment systems
• Three-phase distribution panels and feeders in manufacturing plants
• Data centers and commercial spaces that require reliable protection for high-current circuits
• Upgrade or replacement of existing Square D protection schemes that use compatible part numbers

What sets it apart

As a Square D device, this LA363501021 breaker aligns with Square D panels and enclosures designed to accept these specifications, offering a seamless fit and consistent performance within your protection scheme. The explicit combination of 350 A, 3-pole configuration, and 600 V rating provides a precise, purpose-built solution for high-current, three-phase circuits—delivering dependable interruption when protection is required.

Practical considerations and tips

When selecting this breaker, ensure your electrical design calls for a three-pole, 600 V device with a 350 A rating. For installation, rely on a qualified electrician and follow all relevant electrical codes and enclosure manuals. Keep the Part Number LA363501021 on hand for compatibility verification and future replacements to maintain a consistent protection lineup.