Siemens 3UG4 User Manual page 134

3UG4.1 line monitoring relay
6.5 3UG4614 line monitoring relay
Function diagrams 3UG4614
Display Memory = no
Relay switching behavior = NC
(closed-circuit principle)
134
Memory = no
Relay switching behavior = NO
(open-circuit principle)
3UG4 / 3RR2 monitoring relays
Manual, 05/2016, NEB927043002000/RS-AC/004