Description
The Siemens Industrial Controls 3RU2126-4AB0 Thermal Overload Relay is used to protect the motor from overcurrent and phase failure in the current range of 11-16 amperes. This system works based on thermal expansion; when current flows excessively, a bimetallic strip is heated, and this causes a mechanism and interrupt the supply to the motor. Such relays are useful in HVAC systems compressors from overheating and avoid any breakages, and maintain continuity. Advantages include motor protection, reduction of expenses on repairs, longer equipment life, and improved safety of the system.
