Square D EHB-4120 - 20A, 1-Pole, Circuit Breaker

Meet the Square D EHB-4120, a 20A, 1-Pole circuit breaker engineered to deliver dependable overcurrent protection where it matters most—in panelboards, switchboards, and control panels across industrial, commercial, and OEM environments.

With a single-pole configuration, this breaker is ideal for single-phase circuits and compact layouts, providing precise protection without unnecessary bulk. The 20-amp rating ensures your branch circuits stay safeguarded from overloads while allowing normal equipment startup and operation within its designed limits.

• Current rating: 20A
• Poles: 1-Pole
• Breaker type: Circuit Breaker

This Square D device is purpose-built for applications where reliable overcurrent protection and safe operation are essential. It's well-suited for distribution panels and motor control centers, as well as industrial equipment racks and control installations in commercial settings. The EHB-4120 is designed to integrate smoothly with standard Square D enclosures and bus configurations, delivering consistent performance in demanding environments.

Ideal use cases:

• Protecting branch circuits in distribution panels and control panels
• Single-pole protection in panelboards for compact, space-constrained installations
• OEM equipment protection in manufacturing lines and process systems

Helpful tips for deployment: Verify the single-pole, 20A configuration matches your circuit requirements, ensure compatibility with your panelboard or switchboard model, and follow all safety procedures during installation and maintenance.