ABB REF620E_F relay protector

Product manual:

Terminal module:
These modules are responsible for connecting the field equipment to the automation system.
They can handle analog or digital signals and provide isolated protection.
Counting module:
Used to monitor and count the number of events passing through the sensor.
The counting module can be integrated with process control and alarm management systems.
Controller module:
The controller module is the core component that performs logical operations, control algorithms, and other advanced functions.
For example, model 1SAM250005U1009 and 1SBL177004R4122.
Power module:
Provides a stable power supply to other modules and system components.
For example, ABBPU512V2 3BUR001401R1 power module.

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