The FUJI ELECTRIC VFC300A-7W is a three-phase regenerative ring compressor rated at 0.5 hp, built for continuous-duty air movement in industrial vacuum or pressure applications. It delivers 56 cfm at open flow and holds a maximum operating pressure of 49.8 in wc and a maximum vacuum of 45 in wc — numbers that tell you this is a low-pressure, high-volume machine, not a positive-displacement pump. Wired for dual-voltage 200-230/460V AC three-phase at 60 Hz, the motor draws 1.5-1.7 A on the low tap and 0.75-0.85 A on the high tap. That current range is modest enough that a standard motor starter or manual motor protector in the 2-4 A range covers it cleanly, no oversized contactor needed.
Insulation is Class B per NEMA standards, which is the baseline for general-purpose industrial motors — 130 °C continuous rating. No special high-temperature or inverter-duty winding here, so keep ambient under 104 °F and the air temperature rise under 54 °F as specified.
Ports are 1-1/4 in NPT female on both sides, so pipe thread sealant and a standard nipple or hose barb connect directly. The aluminum housing handles typical plant-floor vibration; mount on a flat surface with clearance for the inlet/outlet piping and enough airflow around the housing for cooling. Thermal protection is listed as pilot duty — meaning the internal overload device switches a control circuit, not the motor line directly. Wire it through a contactor or motor starter with a control-voltage hold circuit; the pilot-duty thermal protector opens that control path on overtemp.