302 series

      302 series detectors have a smooth-ceiling UL rating of 50' x 50' (15.24 x15.24 meters) and are the only type of heat detectors having such a rating on both fixed temperature and rate anticipation.The 302 Series are normally-open devices designed especially for fire detection and alarm systems.
      Here you can get some information about the features of 302 series.First,it has immediate response. The 302 series activates whenever ambient air temperature reaches a detector's setting,eliminating the thermal time lag inherent in conventional heat detectors.Secondly,it can eliminatefalse alarms.The 302 Series do not respond to momentary temperature fluctuations below the selected temperature.Fourthly,it has universal application. The 302 Series can be used in all areas for any type of occupancy.Fifthly,it has the function of self-restoring.When temperature drops back down below the protection level, the detector automatically resets itself.At last,it is hermetically sealed, shock resistant and corrosion resistant, and tamper-proff.
      The following is about the electrical ratings of 302 series.When the voltage is 6-125 VAC,the current is 5 amps.When the voltage is 6-25 VDC,the current is 1 amp.When the voltage is 125 VDC,the current is 0.5 amp.