User Manual

Accessories
14.2 Accessories for 3UG4 monitoring relays
3UG4 / 3RR2 monitoring relays
Manual, 02/2013, NEB927043002000/RS-AA/002
315
14.2 Accessories for 3UG4 monitoring relays
14.2.1 Sealable cover
Description
There is a uniform sealable cover for the monitoring relays with an overall width of 22.5 mm.
The sealable cover can be used to secure the actuators (rotary buttons, sliding switches, and
keys) of the monitoring relays against unauthorized or unintentional manipulation.
Siemens also offers a sealable membrane (3TK2820-0AA00) for securing the monitoring
relays with analog setting. The sealable membrane is affixed to the front of the device and
secures rotary buttons and sliding switches against unintentional manipulation.
Note
The sealable membrane does not protect keys against unauthorized or unintentional
manipulation.
Mounting
The figure below shows how to mount the sealable cover 3RP1902 on the monitoring relay.
Table 14- 7 Mounting the sealable cover on the monitoring relay
Step Operating instruction Image
1 Break off the clip on the sealable cover.
2 Insert the sealable cover into the
openings on the monitoring relay.
3 Swing the sealable cover up.
4 Insert the clip into the opening until it
engages.
5 Seal the clip to secure it against
unauthorized removal.
53





