Description
The Nidec-Embraco 513554311-ESP Overload Compressor Protector is a thermal and current-sensing component used in refrigeration systems to protect compressor motors from overheating and electrical overload. It is installed directly in compressor electrical assemblies within air conditioning units, heat pumps, refrigerators, and other sealed cooling systems. In operation, it monitors compressor current and temperature and disconnects power when abnormal conditions occur in HVAC systems. It works as part of the compressor start and protection circuit, ensuring stable operation during start-up and continuous cycling under variable load conditions in commercial cooling equipment.
