Schneider Electric (Square D) LRD21L Thermal Overload Relay 12–18A

The Schneider Electric (Square D) LRD21L Overload Relay operates as a vital safety part which protects HVAC system motors from overheating and damage caused by excessive current loads. The 12-18 amp power rated relay tracks motor current flow then cuts off power when current reaches unsafe levels to protect equipment from harm. It is used as a standard protection element in HVAC systems fans and pumps. The system becomes more reliable because the overload protection safeguards components from typical heat conditions which maintenance and equipment downtime.