Square D ES-66423 - 50A, Circuit Breaker

Meet the Square D ES-66423 - 50A Circuit Breaker, a compact yet rugged overcurrent protection device designed for industrial reliability. This 50A breaker is built to safeguard electrical distribution and motor control systems in demanding environments.

Key applications include panelboards, switchboards, control panels, and OEM equipment, where safe operation and rapid fault clearance are essential.

• 50-amp protection for feeders and branch circuits in commercial and industrial installations.
• Industrial-grade performance from a trusted Square D lineage, delivering consistent tripping behavior and dependable long-term operation.
• Versatile integration into panelboards, switchboards, control panels, and OEM configurations, supporting reliable distribution and motor control centers.
• Enhanced safety and uptime by interrupting overcurrent before damage propagates, reducing downtime and equipment wear.

This circuit breaker is ideal for projects where you need balanced protection and ease of maintenance in distribution panels and MCCs, spanning manufacturing floors, commercial facilities, and custom OEM builds.

Choosing the right protection means selecting a device you can trust. The Square D ES-66423 50A circuit breaker is designed to deliver predictable performance when you need it most—whether you're upgrading an existing panel, assembling a control system, or specifying parts for a new installation. Install with compatible Square D hardware for optimal results and ensure it matches your system's voltage, fault current, and enclosure requirements.