Dwyer DDB73 is a Non-Spring Return Direct Coupled Actuator with a temperature range of -22 to 122°F (-30 to 50°C). It has an accuracy of ±5% and can be powered by 110 VAC or 24 VAC, with an optional 230 VAC. The housing material is NEMA 2 (IP42) and it has a terminal block electrical connection. With a power consumption of 5.5 VA (DDB) or 7.5 VA (DDD), this actuator comes with standard accessories such as imitative baffles and a setting bracket. It fits shaft diameters of 0.4-0.75" (10-20 mm) and provides overload protection with a magnetic clutch. The angle of rotation is mechanically adjustable to 95°, and the running time varies depending on the torque. It has a visual indicator for position indication and a manual override with a push button. The control input options are two-position or floating for DDB, and 4-20 mA or 0-10 VDC for DDD. With a life expectancy of 60000 full cycles, it operates quietly with a sound level of <45 dB.