Installation, Operation and Maintenance Manual IO-70106 RevK 08-183
Environment: The unit is designed for operation indoors in ambient temperatures of -35ºC (-31ºF)
to +85ºC (+185ºF) with a relative humidity of 0% to 95% (non-condensing). The unit is provided in
an industrial enclosure, which should not be installed in areas with excessive dust, corrosive vapors,
flammable materials or explosive atmospheres.
Mounting: Mount unit as close as possible to the service panel in close proximity to the breaker that
will feed the SPD. For best performance, unit should be positioned so that the length of the wiring to the
surge protective device (SPD) unit is minimized. Dimensional information is shown on page 7.
NEMA 4X (Non-Metallic) enclosure - Remove the cover from the unit to gain access to the
mounting holes inside the case. Use #6 x 3/4” self-threading screws (provided), to mount the SPD
to the wall or back plane. Replace the cover on the unit and torque cover screws to 10 IN-LBS,
(see drawing).
NEMA 12, (Metallic) enclosure – Mounting flanges accept 1/4 hardware.
Wire Sizing/Routing: To reduce the wiring impedance to surge currents, the phase, neutral (if required),
and ground conductors are recommended to be 12AWG-10AWG and twisted together and routed in
the same raceway (conduit). Avoid any sharp bends in the conductors. All wiring must comply with the
National Electrical Code (NEC) and applicable local codes.
Conduit Connection: The SPD wires should feed through the plastic conduit piece supplied. The conduit
should be cut to match the distance from the unit to electrical panel. Use the supplied conduit hub to
connect to the electrical panel.
Wiring Connections: Before making connections to the unit, verify that the unit model number and
nameplate voltage rating are appropriate for connection to the intended power source (See table).
1. It is recommended that a 20A (with 12 AWG wire) or 30A (with 10 AWG wire) circuit breaker be used
for installation and connection to the service panel.
2. Connect a white wire from the supply neutral to the neutral terminal/lug inside the SPD, and connect
a green wire from the source ground to the SPD ground terminal/lug.
3. Connect a black phase wire from each line on the service panel/circuit breaker to each corresponding
phase terminal/lug in the SPD.
4. If using remote sensing (Form C dry contact), connect wires to COM (orange), NC (blue), and NO
(yellow) respectively. Relay’s maximum switching capacity is 250VAC, 5A.
CAUTION - FOR PROPER AND SAFE OPERATION, NEUTRAL AND
GROUND MUST BE RELIABLY CONNECTED. FAILURE TO OPERATE
THIS UNIT FROM A SOLIDLY GROUNDED POWER SOURCE OF THE PROPER CONFIGURATION WILL
REDUCE OR IMPEDE OPERATION, AND MAY RESULT IN UNIT FAILURE.
ATTENTION - Pour un fonctionnement correct et sûr, le neutre et la mise à la terre doit être connectés
de manière fiable. Défaut de faire fonctionner cet appareil à partir d’une source d’alimentation
solidement mise à la terre va réduire ou même empêcher le fonctionnement correct et peut entraîner
une défaillance de l’unité.
Applying Power: Apply power to the SPD and assure status indications are normal. Under normal
conditions, the green “OK” or “PHASE” LED(s) are illuminated and the red “REPLACE” or “SERVICE” LED
is OFF. If normal status indication does not exist, see “TROUBLESHOOTING”.