Miscellaneous
USM02
Overcurrent Relay
1. Special Properties
The USM 02 device is used for monitoring overcurrent conditions. The required threshold value can be adjusted via the I-potentiometer. Additionally, the overcurrent duration—after which the integrated relay is activated—can be set using the T-potentiometer. This “fault” condition is indicated by a red LED and can be acknowledged using the reset button S1.
The relay output X2 is potential-free (floating contact)