Softswitch128®
Switching Systems
Power Equipment
ne-xps-1 12.05.08
Combination Normal/Emergency Softswitch128® Panel –
Feed-Through Only
Standard-size Softswitch128 feed-through panels are available with internal separation allowing normal and
emergency circuits to be wired into the same enclosure. Normal circuits are wired into the top section of the
enclosure. Emergency circuits are wired into the bottom section of the enclosure. Each section is controlled by
its own Softswitch128 controller, and the sections are considered as separate panels during system
programming.
Normal section
Emergency section
Panel with cover
Combination
Normal/Emergency
Softswitch128 panel
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Page 1
Softswitch128®
Switching Systems
Power Equipment
ne-xps-2 12.05.08
How to Build a Model Number for Combination Normal/Emergency
Softswitch128® Panel
X P S 2 8 - E M 8 - FT - C G P _ _ _ _
Prefix
Number
of Emerg.
Circuits
Number
of Normal
Circuits
Custom Panel
Suffix
Feed
Prefix
XPS for Softswitch128 panels
Number of Normal Circuits
Total number of normal circuits (switch legs) in the panel
Number of Emergency Circuits
Total number of emergency circuits (switch legs) in the panel
Feed
FT for feed-through panels.
Custom Panel Suffix
Indicates panel with special options.
Combination Normal/Emergency Softswitch128® Panel Models
Combination Normal/Emergency Softswitch128
Feed-Through Panels for 120/277 V
Normal
Switch Legs
Emergency
Switch Legs
Feed
Type
Maximum
Feed
8
12
16
20
24
28
4
4
4
4
4
4
FeedThrough
20 A
R
or
or
or
or
or
or
8
8
8
8
8
8
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Page 2
Softswitch128®
Switching Systems
Power Equipment
ne-xps-3 12.05.08
Combination Normal/Emergency Softswitch128® Panel Dimensions
14.375
(365)
Suggested Mounting Height:
Mount Standard Softswitch128 panel
at a height of 26 in (660 mm),
measured from floor to bottom of
panel, for optimal LCD viewing.
Top View
15.875
(403)
4.21
(107)
2.43 (62)
8.00
(203)
0.150
(4)
2.69 (68)
41.75 (1060)
Cover
59.50 (1511)
59.00
(1499)
Left Side View
2.43 (62)
11.00
(279)
Right Side View
15.125
(394)
Front View
Bottom View
4.15 (105)
Dimensions in inches (mm).
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Page 3
Softswitch128®
Switching Systems
Power Equipment
ne-xps-4 12.05.08
Combination Normal/Emergency Softswitch128® Panel
Wiring Overview
Wire as shown. Use a trough when the Softswitch128 panel is not adjacent to a distribution panel.
Splice Neutrals in trough.
Do not remove bypass jumpers until load wiring is verified.
Circuit Breaker
Hot
H
SH
H
Switched load
Wiring: Normal
power section
SH
H
SH
Each switched
circuit requires a
dedicated 20 A
circuit breaker and
feed wiring to/from a
normal power
distribution panel, by
others.
Load
H
SH
XP switching
module
(4 circuits)
Neutral
Ground bus
Wire Sizes
• 14 AWG (2.5 mm2) to 10 AWG (4.0 mm2) for feed
wiring and switched load wiring
• Power (Hot/Live) and switched Hot/Live connect
directly to terminal block for switch legs
Normal
Softswitch128
controller
Ground bus
Switched load
Wiring: Emergency
power section
Circuit breaker
Each switched
circuit requires a
dedicated 20 A
circuit breaker and
feed wiring to/from
an emergency
power distribution
panel, by others.
Hot
H
SH
Emergency
Softswitch128
controller
H
SH
H
SH
Load
H
SH
Neutral
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Page 4
Softswitch128®
Switching Systems
Power Equipment
ne-xps-5 12.05.08
Combination Normal/Emergency Softswitch128® Panel
Dual-Voltage Control Feed Wiring
Combination Normal/Emergency Softswitch128 panels are dual-voltage type and may be fed with either
120 V
or 277 V
.
Wire to either the 120 V
or the 277 V
control feed terminals, not both. The terminals for the unused
voltage will remain empty.
Ground
277 V
control
feed
277 V
277 V
277 V
Neutral
OR
120 V
control
feed
N
N
Neutral
N
Normal
Feed
Wiring
{
Do not wire to
these terminals
Ground
120 V
*
120 V
Ground
277 V
control
feed
277 V
277 V
277 V
Neutral
OR
120 V
control
feed
N
N
Neutral
N
Emergency
Feed
Wiring
{
Do not wire to
these terminals
Ground
120 V
*
120 V
* Note: 120 V
Hot terminal is protected by an internal fuse in case 277 V
A spare fuse is also supplied in the panel.
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is mistakenly applied.
Page 5
Softswitch128®
Switching Systems
Power Equipment
ne-xps-6 12.05.08
Low-Voltage PELV (Class 2: USA) Wiring Overview
for Combination Normal/Emergency Softswitch128® Panel
• Connect low-voltage PELV (Class 2: USA) wiring to each of the two Softswitch128 controllers in the panel.
• PELV (Class 2: USA) wiring between the two controllers must be run outside the panel.
• The normal section and the emergency section each counts as a single panel on the control link.
(Combination Normal/Emergency panel counts as 2 out of 16 allowable panels in the system).
Combination Normal/Emergency
Softswitch128 panel
OMX-AV
FOMX-1B
OMX-CCO-8
SO-7B
Up to 32 control stations
Up to 16 panels
PELV (Class 2: USA) wiring link requires:
• Two 12 AWG (2.5 mm2) conductors for control wiring.
• One shielded, twisted pair 18 AWG (1.0 mm2) for data link.
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Page 6