Square D DP-3640 - 20A, 1-Pole, Circuit Breaker

Meet the Square D DP-3640 — a 20A, 1-Pole circuit breaker engineered for dependable overcurrent protection in industrial and commercial electrical systems. Its compact, single-pole design makes it ideal for panelboards, switchboards, and control panels where space and reliability matter.

Built to safeguard distribution panels and motor control centers, the DP-3640 delivers prompt response to overloads and short circuits, helping protect wiring, devices, and personnel. This device is purpose-built for applications that demand consistent performance and safe operation in demanding environments.

Key advantages

• Single-pole, 20A protection for typical single-phase circuits
• Seamless integration with Square D panel ecosystems due to standardized form factor
• Durable construction designed for industrial and commercial use
• Reliable overcurrent protection that minimizes equipment damage and downtime
• Well-suited for OEM equipment and custom control systems

Where and how you’ll use it

• Panelboards, switchboards, and control panels in factories, data centers, and commercial facilities
• Distribution panels and motor control centers where dependable branch-circuit protection is essential
• OEM equipment housings and customized electrical builds requiring a trusted 20A, 1-Pole device

Why this matters for your project

Choosing the DP-3640 means you’re selecting a proven, purpose-built solution for overcurrent protection. With a 20A rating, it protects conductors and equipment on typical lighting, receptacle, and small-motor circuits while enabling clean coordination with other protection devices in your panel. The result is safer operation, reduced nuisance trips, and simpler service when replacements are needed.

Installation and care tips

• Confirm the DP-3640’s compatibility with your panelboard or control panel before replacing or adding protection
• Maintain consistent trip ratings across interconnected protection devices to ensure proper coordination
• Follow all safety procedures and lockout/tagout protocols during installation or replacement
• Label circuits clearly to reflect the protected load and maintain quick diagnostics

Specifications at a glance: 20A current rating; 1-Pole configuration; Type: Circuit Breaker. The DP-3640 is designed to deliver reliable protection within distribution panels and motor control centers, making it a dependable choice for ongoing electrical safety and efficiency.