| Attribute | Value |
|---|---|
| Manufacturer | Eaton |
| Type | Ambient Compensated Thermal Overload Relay |
| Cat.no. | Ba43a |
| Model | A |
| Mfg.code. | C140721/ C140530 |
| Control Circuit Rating | b600 |
| NP | Np6710c78h01 |
| Assembled In | USA |
| Weight | 620 Gm |
| Condition | Used 2 Pcs |
| Ref No | 54942 |
What is a Thermal Overload Relay?
The BA43A. It is designed to protect electric motors from damage due to excessive current. It functions based on heat generation. When a motor draws more current than it is rated to handle, the relay heats up. If this overloading persists, the thermal build-up initiates the relay for which makes the circuit to trip and closes off the motor not causing damage This thermal protection is critical as it mimics the motor’s inherent thermal characteristics.
Key Features and Specifications:
Variable Trip Current: This feature of BA43A can be set up in a trip current range such that it would adjust according to the specific motor it is going to protect. Thus, in the context of proper protection, it must be set accurately and appropriately.
Thermal Memory: It avoids false tripping. This is possible by taking the recent thermal history of the motor and avoiding tripping in the event of short overload where the motor hasn’t attained the critical temperature.
Phase Loss Sensitivity: The BA43A can sense a phase loss in a three-phase system. This is crucial because a loss of phase may cause a motor to draw high current on the remaining phases and thus overheat and burn up.
Test Button: A built-in test button allows easy testing of the relay’s operation without actually overloading the motor. This is very useful for preventative maintenance.
Trip Indication: A clear visual indication of when the relay has tripped makes it easy to identify the source of the problem.
Mounting Options: The BA43A presents multiple mounting options, thus quite versatile on different panel configurations.
Applications of the BA43A:
The Eaton BA43A finds application in a wide range of industrial settings, including:
Manufacturing: Protecting motors used in pumps, fans, conveyors among others
HVAC: Safeguarding motors in compressors, chillers, and air handlers.
Mining: Protection of motors in heavy-duty equipment.
Oil and Gas: Protection of the reliable operation of motors in pumps and other critical equipment.
Advantages of BA43A
Motor Protection: The first advantage is highly reliable protection of motor overloads, which means lower costs for repairs or loss of time;
Longer Lifespan of Motors: The overheating prevents early demise.
Reduced Downtime: Quick tripping and clear trip indication help minimize downtime by allowing for faster troubleshooting and resolution.
Improved Safety: By preventing motor failures, the BA43A contributes to a safer working environment.
