NOTICE: Solid State Relays are Silent and Offer Extremely Long Life, but May Not Function Properly when Subjected to Radioactive Environments.  Forced Air May be Required to Achieve Maximum Load Rating.  NCD does NOT Recommend Driving any Relay at Maximum Load.  It is Not Possible for NCD to verify Manufacturer Claims of Load Ratings.  NCD Solid State Relay Controllers have NOT been Tested at the Rated Loads.  Solid State Relays CANNOT be used for Switching DC loads.  Solid State Relays May ONLY be used in AC Switching Applications.  Solid State Relays Require a Minimum Load, and will NOT Function Correctly Unless Minimum Load Requirements are Met.  External Snubber Circuitry May be Required for Certain Applications.  If a Device Turns On, but Does Not Turn Off, this Usually Indicates a Need for a External Snubber Circuit.  This May Indicate Minimum Load Requirements Have Not Been Met.  Please Research Crydom Solid State Relays or be Familiar with this Technology Prior to Purchase.  Please Consult Crydom Engineers to Determine the Best Relay for Your Application www.crydom.com.