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SPECIFICATION SUBMITTAL
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Power Equipment
Softswitch128®
Switching Systems
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.
Combination
Normal/Emergency
Softswitch128 panel
Normal section
Emergency section
Panel with cover
1
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Power Equipment
Softswitch128®
Switching Systems
Number
of Normal
Circuits
Prefix
X P S 2 8 - E M 8 - FT - C G P _ _ _ _
Feed
How to Build a Model Number for Combination Normal/Emergency
Softswitch128
® Panel
Custom Panel
Suffix
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.
Number
of Emerg.
Circuits
Combination Normal/Emergency Softswitch128
Feed-Through Panels for 120/277 V
8
12
16
20
24
28
Normal
Switch Legs
Feed
Type
Feed-
Through
Maximum
Feed
20 A
Emergency
Switch Legs
4 or 8
4 or 8
4 or 8
4 or 8
4 or 8
4 or 8
Combination Normal/Emergency Softswitch128® Panel Models
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Power Equipment
Softswitch128®
Switching Systems
4.15 (105)
41.75 (1060)
2.69 (68)
2.43 (62)
15.875
(403)
8.00
(203)
14.375
(365)
59.50 (1511)
2.43 (62)
11.00
(279)
15.125
(394)
59.00
(1499)
4.21
(107)
0.150
(4)
Combination Normal/Emergency Softswitch128® Panel Dimensions
Bottom View
Left Side View
Top View
Right Side View
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.
Dimensions in inches (mm).
Front View
Cover
3
H
SH
H
SH
H
SH
H
SH
H
SH
H
SH
H
SH
H
SH
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SPECIFICATION SUBMITTAL
ne-xps-4 12.05.08
Power Equipment
Softswitch128®
Switching Systems
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.
XP switching
module
(4 circuits)
Normal
Softswitch128
controller
Hot
Neutral
Load
Combination Normal/Emergency Softswitch128® Panel
Wiring Overview
Ground bus
Circuit Breaker
Wire Sizes
• 14 AWG (2.5 mm
2
) to 10 AWG (4.0 mm
2
) for feed
wiring and switched load wiring
• Power (Hot/Live) and switched Hot/Live connect
directly to terminal block for switch legs
Hot
Neutral
Load
Ground bus
Emergency
Softswitch128
controller
Switched load
Wiring: Normal
power section
Each switched
circuit requires a
dedicated 20 A
circuit breaker and
feed wiring to/from a
normal power
distribution panel, by
others.
Switched load
Wiring: Emergency
power section
Each switched
circuit requires a
dedicated 20 A
circuit breaker and
feed wiring to/from
an emergency
power distribution
panel, by others.
Circuit breaker
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SPECIFICATION SUBMITTAL
ne-xps-5 12.05.08
Power Equipment
Softswitch128®
Switching Systems
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.
* Note: 120 V Hot terminal is protected by an internal fuse in case 277 V is mistakenly applied.
A spare fuse is also supplied in the panel.
{
277 V
277 V
N
N
N
120 V
277 V
control
feed
120 V
control
feed
OR
120 V *
277 V
Ground
Ground
Neutral
Neutral
Do not wire to
these terminals
{
277 V
277 V
N
N
N
120 V
277 V
control
feed
120 V
control
feed
OR
120 V *
277 V
Ground
Ground
Neutral
Neutral
Do not wire to
these terminals
Normal
Feed
Wiring
Emergency
Feed
Wiring
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SPECIFICATION SUBMITTAL
ne-xps-6 12.05.08
Power Equipment
Softswitch128®
Switching Systems
• 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).
Up to 32 control stations
FOMX-1B
Combination Normal/Emergency
Softswitch128 panel
SO-7B
OMX-AV
Low-Voltage PELV (Class 2: USA) Wiring Overview
for Combination Normal/Emergency Softswitch128
® Panel
OMX-CCO-8
PELV (Class 2: USA) wiring link requires:
Two 12 AWG (2.5 mm
2
) conductors for control wiring.
One shielded, twisted pair 18 AWG (1.0 mm
2
) for data link.
Up to 16 panels
6