Square D | KC341501021 | Circuit Breaker | 150A | 3-Pole | 480V

Square D KC341501021 Circuit Breaker is a rugged three-pole protection device designed for 480-volt, three-phase electrical systems. Engineered for maintenance, retrofit, and replacement projects where exact specifications matter, this 150A breaker ensures reliable overcurrent protection for demanding equipment and industrial circuits.

Key specifications

• Amperage: 150 A
• Poles: 3-Pole
• Voltage: 480 V
• Part number: KC341501021
• Brand: Square D

Ideal applications and use cases

• Protect three-phase loads in commercial or industrial panels that operate at 480V, reducing the risk of equipment damage from overcurrent events.
• Maintenance and retrofit projects where matching specs are essential to maintain system reliability and continuity.
• Replacement for failed or obsolete breakers within compatible Square D panels, helping you restore service quickly without compatibility guesswork.
• Protection for heavy machinery, HVAC systems, pumps, and motors that run on 480V three-phase power, ensuring stable operation and safety margins.

Buying guidance and compatibility

Important: Confirm fit and ratings before ordering. The KC341501021 part number is the best reference for compatibility with your Square D panel or switchgear. When selecting this breaker, have your panel model and catalog information on hand to ensure seamless replacement or retrofit.

Installation, safety, and best practices

• Electrical work should be performed by a licensed professional to ensure proper installation and compliance with safety standards.
• Verify that your panel is compatible with a 3-Pole, 480V protection device and that the electrical rating matches the circuit requirements.
• Power down the system, follow lockout/tagout procedures, and consult the manufacturer’s installation guidelines during replacement or retrofitting.