Filko CB-40X - 20A, Waterproof DC Circuit Breaker

Filko CB-40X is a rugged 20A waterproof DC circuit breaker designed to protect DC power systems in demanding environments. Built to withstand moisture and contaminants, this model delivers dependable overcurrent protection where it matters most—inside distribution panels, motor control centers, and OEM equipment.

• Current rating: 20A
• Breaker type: Waterproof DC Circuit Breaker
• Applications: panelboards, switchboards, control panels, and OEM equipment
• Environment: sealed, moisture-resistant housing for industrial, commercial, and OEM settings
• Protection: reliable overload and short-circuit protection for DC circuits in distribution panels and motor control centers

Designed for real-world use, the CB-40X helps prevent damage from overloads and faults in harsh environments—reducing downtime and extending the life of downstream equipment. Its waterproof design minimizes moisture-related risks that can threaten electrical safety and performance in DC power systems.

Ideal use cases

• DC power distribution in panelboards and switchboards
• Control panels in outdoor or damp/industrial environments
• OEM equipment requiring compact, reliable overcurrent protection
• Motor control centers and other DC-powered drives

Practical tips for best results

Choose enclosure and mounting that protect the breaker from direct exposure to water or wash-downs. Ensure wiring practices keep load currents within the 20A rating, and follow standard electrical codes for safe installation. Periodically inspect connections for tightness and signs of moisture ingress to maintain optimal performance.

With the Filko CB-40X, you gain a purpose-built, DC-specific protection solution that stands up to demanding environments while keeping critical DC power systems safe and operational.