Fuji Electric SA33B Molded Case Circuit Breaker

The Fuji Electric SA33B molded case circuit breaker is a 3‑pole Auto Breaker designed to protect three‑phase electrical circuits. It carries a 30 A current rating and a voltage rating of 550 VAC, making it suitable for distribution panels in commercial and light industrial environments. As a molded‑case protective device, the SA33B combines a compact form factor with reliable interrupting capability to trip automatically under overload or fault conditions within its rated range. This three‑phase protection unit ensures that all phases are interrupted together, helping safeguard downstream equipment and improve safety in typical three‑phase power systems. The SA33B designation refers to Fuji Electric’s SA33B family of molded case breakers, offering a solid choice when a compact, standard‑rated protection device is required for 3‑phase circuits at 550 VAC.