Square D PLA34080CU43A Circuit Breaker, 800A, 3-Pole, 480V

Engineered for industrial power systems, the Square D PLA34080CU43A circuit breaker delivers reliable overcurrent protection for heavy-duty applications. With an 800 A rating and a 3-pole configuration, it's built to guard 480 V three-phase circuits against faults, short circuits, and equipment damage.

This breaker is designed for industrial service, maintenance, and replacement projects where uptime and safety are non-negotiable. Use the part number PLA34080CU43A to confirm compatibility with your panel and application requirements. If you need help matching a part number or confirming compatibility, message us and we'll help.

Key specifications

• Amperage: 800 A
• Poles: 3
• Voltage: 480 V
• Product type: Circuit Breaker
• Manufacturer: Square D
• Part Number: PLA34080CU43A

Why this Square D PLA34080CU43A stands out

• High-current protection for demanding facilities: This 800 A, 3-pole unit is suited for large feeders and motor-driven equipment, providing fast, reliable interruption when faults occur.
• Three-phase safety: The 480 V rating aligns with common industrial power distributions, enabling efficient protection across all three legs of your supply.
• Proven reliability from Square D: A long-standing standard in electrical distribution, offering compatibility with compatible panels and predictable performance.
• Part-number-led compatibility: Ensure peace of mind by verifying fit with PLA34080CU43A against your equipment and application requirements.

Applications and use cases

Ideal for industrial electrical service upgrades, panel replacements, and routine maintenance where high-current, three-phase protection is essential. Suitable for facilities with heavy motors, conveyors, presses, or other machinery that demand robust circuit protection at 480 V.

Installation and compatibility tips

Before installation, confirm fit by the exact part number PLA34080CU43A and check your panel’s Acceptable Part Numbers and rating requirements. If you’re unsure, reach out—our team can assist with compatibility checks and part matching to minimize downtime.