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2020003701 (08/06) Page 2 of 4
PRE-INSTALLATION REQUIREMENTS (CONT.):
system. Refer to the “VOLTAGE RATINGS & POWER SOURCE
CONFIGURATIONS” chart below. The TVSS model number can be found on the
front of the unit.
Verify that an NEC (National Electrical Code) compliant X0 bond has been made at
the upstream transformer that feeds the electrical supply panel. Per NEC 250.30, this
bond must be in place on all grounded electrical systems.
The TR5451 or TR5452 model TVSS must be installed on a dedicated branch circuit
breaker. The maximum allowable rating for the circuit breaker is 30A / 22kAIC.
Do not attempt to install the TVSS on the upstream (line) side of the Main Breaker or
Fuse.
The TVSS should only be installed indoors in NEMA 1 type locations. Do not install
the TVSS outside or in wet locations.
Single Phase
2 Wire + Ground
150V (L-N / L-G)
270V (L-N / L-G)
120V
240V
ACT451-120
ACT 451-240
Split Phase
3 Wire + Ground
150V (L-N / L-G)
270V (L-N / L-G)
120 / 240V
240 / 480V
ACT452-120
ACT452-240
SOURCE
CONFIGURATION
SYSTEM
TYPE
MAXIMUM
CONTINOUS RMS
OPERATING
VOLTAGE
NOMINAL
VOLTAGE
(50/60hZ)
MODEL
TYPE
L1
L2
N
VOLTAGE RATINGS & POWER SOURCE CONFIGURATIONS
L1
N
INSTALLATION:
POWER MUST BE PROVEN DISCONNECTED BEFORE
STARTING INSTALLATION, INSPECTION OR MAINTENANCE!
FAILURE TO DO SO MAY CAUSE SERIOUS INJURY, DEATH
AND/OR PROPERTY DAMAGE.
Before attempting installation, make sure that the pre-
installation requirements of this manual have been satisfied.
If the status of the pre-installation requirements are not
known, do not attempt to continue.
MOUNTING
1. TR5451 and TR5452 TVSS units are designed to be
mounted directly to the electrical panel through a ½”
knockout. Mounting feet are also supplied for instances
where direct connection to the panel is not practical. Select
a location that will allow the closest proximity to the breaker
that the TVSS will be connected to.
2. Use the ½” threaded fitting and spacer to secure the
TVSS to the Electrical Panel that is to be protected.
903-640-0555
800-950-2281
NOTE: If lamp is out, replace unit
LISTED (48E6)
UL 1449, 2
ND
EDITION
FOR INDOO R USE ONLY
DUAL PHASE TVSS
120 VAC 50/60HZ
SUPPRESSION VOLTAGES
330 L-N
600 L-L
TVSS
PART# ACT452120210N
DATE CODE: WO#
Electrical
Panel
Spacer
Threaded
Fitting
A
CT452-120
120V
150V (L-N / L-G)
TR5451-120
TR5451-240
TR5452-120