ABB ESP M1R Installation Instructions Manual page 26

The ESP units remote indication is rated at 1 Amp, 250 V
AC.
Note: For reliable contact operation, the minimum
permissible load is 10 mA, 5 V DC.
Power Present
Power Absent
Figure 13:
Operation of normally closed (NC) and normally open (NO) volt free
contact.
7/2 | Installation instructions for mains wire-in protectors
Unit
Healthy
NO
OPEN
CLOSED
CLOSED
OPEN
Reduced or
No protection
NO
NC
CLOSED
CLOSED
NC
OPEN
OPEN