Fuji Electric SA103BAUL-20 - 20A, 3-Pole, Waterproof DC Circuit Breaker

Meet the Fuji Electric SA103BAUL-20—a rugged DC circuit breaker built for reliability where it matters most. With a 20A current rating and a robust 3‑pole configuration, this unit provides dependable overcurrent protection for three‑phase DC circuits in demanding environments.

Why this breaker stands out

• 20A, 3‑Pole protection: Designed to safeguard panelboards, switchboards, and control panels that run three‑phase DC systems, ensuring all conductors are properly isolated during a fault.
• Waterproof construction: Engineered to resist moisture ingress, making it suitable for damp, washdown, or outdoor installations where reliability matters most.
• Versatile integration: Ideal for industrial facilities, commercial applications, and OEM projects where space and protection need to align in a compact footprint.
• Targeted protection for distribution and control: Specifically built to protect distribution panels and motor control centers from overcurrent events, helping to reduce downtime and equipment damage.

What it’s best used for

• Three‑phase DC distribution panels in manufacturing and processing plants.
• Motor control centers that require reliable low‑voltage DC protection in environments exposed to moisture.
• Outdoor or damp environments where electrical protection must withstand exposure without compromising safety.
• OEM equipment where a compact, weather‑resistant 3‑pole breaker is needed to safeguard critical DC circuits.

How this keeps your system safer

The SA103BAUL-20 delivers fast, dependable interruption of fault currents, preventing damage to wiring, components, and downstream devices. By maintaining controlled shutdown of all three poles, it minimizes the risk of uncontrolled arcing and electrical faults in sensitive DC circuits.

Specifications at a glance

• Current rating: 20A
• Poles: 3-Pole
• Breaker type: Waterproof DC Circuit Breaker
• Suitable for: Industrial, commercial, and OEM applications requiring durable overcurrent protection in distribution panels and motor control centers

Choose the Fuji Electric SA103BAUL-20 when you need a trusted, purpose‑built DC protection solution that can stand up to moisture while keeping three‑phase DC systems safe and controllable. It’s a practical, no‑nonsense choice for professionals who prioritize protection, reliability, and performance in challenging environments.