June 2023
INS 801-774 Rev A
Instruction sheet
MTL surge protection
ZoneBarrier 4PPOE range
Din rail mount protection system
Eaton Electric Limited,
Great Marlings, Buttereld, Luton
Beds, LU2 8DL, UK.
Tel: + 44 (0)1582 723633 Fax: + 44 (0)1582 422283
www.eaton.com
© 2023 Eaton
All Rights Reserved
Publication No. INS 801-774 Rev A 170323
June 2023
1
CAUTION
IMPORTANT SAFETY INSTRUCTIONS
1. Never install ethernet wiring during a
lightning storm.
2. This product is intended for INDOOR USE
ONLY.
3. Secondary Protectors are intended for use on the
equipment side of a listed UL 497B Protector.
4. Risk of Electric Shock - Protector is not to be used
without the arrestor assembly installed.
Installation
1. Read and understand all instructions.
2. The SPD modules can be installed individually,
mounting to any flat surface using the two screw holes.
SPD modules can also be installed on a Din Rail.
In planning an installation, location of the SPD unit in
close proximity to the correct ground point is essential
for protection performance. The correct ground point is
defined as the ground reference used by the system to be
protected. In most applications this is AC power ground.
MINIMIZE the distance between the SPD unit and the
identified ground point as short as possible.
Stand-alone installation
3. To install the SPD unit as a stand-alone unit, attach a
ground wire (minimum #16AWG for Secondary Protector)
to the SPD using the recommended accessories and using
screws(or bolts) as appropriate, mount the unit to the flat
surface (see figure 1).
Figure 1 - Stand-alone Installation
Mounting and grounding on a Din Rail
4. To install a SPD surge protector on a Din Rail, locate the
Din Rail foot over the Din Rail and securely push the clip
onto the Din Rail. Rotate downward and push the SPD onto
the Din Rail until the latch snaps on to the rail. (see figure 2).
Figure 2 - Mounting and grounding on a Din Rail
The surge protector is now securely grounded to the Din
Rail. An existing or customer supplied Din Rail can be
used providing the rail is securely connected to the correct
ground (see grounding section). To remove a module,
gently pull the release latch forward and rotate the SPD
upward off of the Din Rail..
5. Connect the incoming line to the port marked
“unprotected” on the SPD module. Run cable from the
SPD port marked “protected” to the equipment to be
protected. Patch cable wire size must not exceed #24AWG.
6. Connect a green ground wire from the Din Rail or
from the SPD unit to the identified grounding point (see
grounding section).
7. Save these instructions.
Grounding
The Din Rail grounding stud must be connected to the
ground reference used by the system being protected. In a
computer room environment this grounding point may be
the ground bar in the AC power panel. Ground leads longer
than 0.25 meter are not recommended
