This device is designed to detect when a preset current threshold is exceeded, on a.c. or d.c. supply. The RM3JA1••MW
relay can monitor overcurrent or undercurrent. All the other relays can only monitor overcurrent. These relays can be used
to monitor currents between 3 mA to 15 A.
Some examples of applications for these relays are:
- To detect whether a conveyor is loaded or not - To monitor the loading of a single phase motor
- To detect a load on a pump - To monitor heating and lighting loads
- To detect a fan belt breaking
