Heat Detectors - 280B -PL Series
The 280B-PL Series detector operates on a fixed temperature or combination fixed temperature and rate-of-rise principle. When the fixed temperature element is activated, the center disc of the detector will fall free. The detector’s contact rating is 3 amps at 125 VAC and 1 amp at 28VDC. The finish is matte white.
Rate-of-rise and fixed temperature,135°F (57°C)