Fuji Electric SA-33 Auto Circuit Breaker is a three-pole, 20 A protective device for 3-phase AC circuits, rated for 5 kA interrupting capacity at 220–240 V. Manufactured by Fuji Electric Co., Ltd., the SA-33 protects distribution wiring by interrupting fault currents in a 3-phase system. It is designed for use in low-voltage electrical panels where 3-pole protection is required.
