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Due to RMS continuous product improvement policy this information is subject to change without notice. 1S20/Issue R/28/02/2010 - 7/11
MOUNTING OPIONS
The 1S20 is available in two versions:
1. A surface mount version which has a separate reset button &
LED indicator on the front panel. The advantage of this
version is the lower cost & where front panel space in limited.
2. A panel mount version which has a combined reset button &
LED indication. The advantage of this version is that it can be
either panel or surface mounted.
SURFACE MOUNT VERSION
This version is suitable for location in the rear of a cubicle. It may
be surface mounted as shown in figures 10 & 17. It may also be
DIN rail mounting when the optional 290407157 DIN Rail
Mounting Kit is fitted. Refer figures 11, 18 & 19.
Figure 10: 1S20 surface mount version front panel
SERIAL NO. &
RATING LABEL
ON MODULE SIDE
FOR PANEL
MOUNT VERSION
REMOVE FOR
REAR CABLE
ENTRY OPTION
REMOVE FOR
TWO M4 OR 4BA
MOUNTING SCREWS
TOP & BOTTOM REAR
TERMINAL BLOCK
RETAINING SCREWS
SLIDE OUT CABLE
ENTRY POINTS
3 ON ONE SIDE
1 AT EACH END
1
S
2
0
K
2
(
C
AB)
A
U
X:
36
-1
50
V D
C
S/
N
:1
23
4
5
6
Figure 11: Surface mount version side view
Mounting Options
PANEL MOUNT VERSION
This version is suitable for mounting on the front panel of a
cubicle or door. This is achieved using a 31mm diameter hole in
the panel adjacent to the protection relay as depicted in figures
12, 13 & 14.
This version may also be surface mounted by reversing the
terminal block retaining screws. It may also be DIN rail mounting
when the optional 290407157 DIN Rail Mounting Kit is fitted.
Refer figures 15, 16 & 19.
Figure 12: 1S20 through hole panel mount version
Use double sided tape supplied
Top & bottom positions
RELAY PANEL
3mm THICK
MAXIMIUM
FRONT PANEL
LABEL
(Supplied with module)
SLIDE OUT CABLE
ENTRY POINTS
3 ON ONE SIDE
1 AT EACH END
TOP & BOTTOM REAR
TERMINAL BLOCK
RETAINING SCREWS
THESE MAY BE
UNSCREWED &
REVERSED TO FIT
FROM THE FRONT OF
THE 1S20 MODULE TO
ALLOW SURFACE
MOUNTING
RETENTION
SHROUD
1S20 Arc Fault Monitor
RESET / TEST
System Functioning
Arc Fault Trip
Sensor 1 Service
Sensor 2 or 3 Service
Continuous Sensor P/U
DC Supply Fail
GREEN:
RED:
ORANGE SOLID:
ORANGE FLASH:
ORANGE / RED:
NONE:
Figure 13: Panel mount version side view
