Fuji Electric Co., Ltd. CP31D Circuit Protector

The Fuji Electric CP31D Circuit Protector, model CP31D from Fuji Electric Co., Ltd., is a 3 A overcurrent protection device designed to safeguard electrical circuits by interrupting current during overload conditions. In operation, it serves as a dedicated protection element in electrical systems, helping prevent insulation damage, conductor overheating, and equipment failure caused by excessive current. Common applications include industrial control panels and general electrical distribution where precise 3 A protection is required for low-current circuits, ensuring compatibility with Fuji Electric protection schemes and easy integration with other protective devices in a control system. This CP31D designation uniquely identifies this part within Fuji Electric’s lineup and communicates its 3 A rating for proper selection and replacement in appropriate circuits.