ETA-S20RT
AC Distribution & Suppressor Unit
ETA-S20RT
AC Power Distribution &
AC Suppressor Unit with Remote Activation
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: 800-321-6699 • Fax: 800-996-3821
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ETA-S20RT
AC Distribution & Suppressor Unit
IMPORTANT SAFETY INSTRUCTIONS
The lightning flash with arrowhead symbol within an
equilateral triangle, is intended to alert the user to the
presence of uninsulated “dangerous voltage “ within the
product’s enclosure that may be of sufficient magnitude
to constitute a risk of electric shock to persons.
The exclamation point within an equilateral triangle is
intended to alert the user to the presence of important
operating and maintenance (servicing) instructions in the
literature accompanying the product.
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this device near water.
6. Clean only with dry cloth.
7. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.
8. Do not install near any heat sources such as radiators, heat registers, stoves, or other device (including amplifiers)
that produce heat.
9. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the
other. A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your
safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.
10. Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they
exit from the device.
11. Only use attachments/accessories specified by the manufacturer.
12. Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the device. When a cart is used,
use caution when moving the cart/device combination to avoid injury from tip-over.
13. Unplug this device during lightning storms or when unused for long periods of time.
14. Refer all servicing to qualified service personnel. Servicing is required when the device has been damaged in any way, such as
power-supply cord or plug is damaged, liquid has been spilled, or objects have fallen into the device, the device has been exposed
to rain or moisture, does not operate normally, or has been dropped.
15. WARNING: To reduce the risk of fire or electric shock, this device should not be exposed to rain or moisture and objects filled with
liquids, such as a vase, should not be placed on this device.
16. To completely disconnect this equipment from the mains, disconnect the power supply cord plug from the receptacle.
17. The mains plug of the power supply cord shall remain readily operable.
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: 800-321-6699 • Fax: 800-996-3821
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ETA-S20RT
AC Distribution & Suppressor Unit
WARNING – WHEN THE DEVICE IS IN USE
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To prevent electric shock, do not remove the product cover as there are high voltage components inside. Refer all servicing to
ETA Systems.
Should any of the following irregularities occur during use, immediately switch off the power, disconnect the power cord from the
AC outlet and contact ETA Systems. Do not to attempt to continue operation with the product as this may cause fire or electric shock:
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Smoke or strange smell coming from the unit.
If the product falls or the case is damaged.
If water or any metallic objects falls into the product.
If the power supply cord is damaged in any way.
If the unit is malfunctioning.
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Do not insert or drop metallic objects or flammable materials into the ventilation holes of the product's cover, as this may result in
electric shock or fire.
Do not place any containers with liquid or metallic objects on the top of the product. If any liquid spills into the unit, fire or electric
shock may result.
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Never operate this product or touch the power supply cord during an electrical storm, electric shock may result.
Never exceed the power rating on the product when connecting equipment. Fire and/or property damage may result.
Operate the product only with the voltage specified on the unit. Fire and/or electric shock may result if a higher voltage is used.
Do not modify, kink, or cut the power cord. Do not place the power cord in close proximity to heaters and do not place heavy objects
on the power cord, including the product itself, doing so may result in fire or electrical shock.
Ensure that the safety ground terminal is connected to a proper ground. Never connect the ground to a gas pipe as a catastrophic
disaster may result.
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Be sure the installation of the product is stable, avoid slanted surfaces as the product may fall and cause injury or property damage.
CAUTION – WHEN INSTALLING THE PRODUCT
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Plugging in or unplugging the power cord with wet hands may result in electric shock.
Never move the unit with the power cord plugged into the wall, as damage to the power cord may result.
When unplugging the cord from the wall, grasp the plug, NOT the cord.
Never install this product in humid or dusty locations, nor in direct sunlight, near sources of heat, or in areas where sooty smoke or
steam are present. Fire and electric shock may result.
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Keep all sides of the unit at least 31⁄2" away from objects that may obstruct air flow to prevent the unit's internal temperature rise.
CAUTION – WHEN THE DEVICE IS IN USE
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Never place heavy objects on the product, causing it to fall and/or break, resulting in personal injury and property damage. In
addition, the product itself may fall and cause injury and property damage.
Contact ETA Systems for instructions on cleaning the inside of the unit. Large accumulations of dust inside the unit may result in heat
buildup and fire.
Ensure that the power supply plug is securely plugged into the wall outlet. Never allow dust to accumulate on the power plug or
inside the wall outlet.
When cleaning the unit or the unit is not to be operated for an extended period, unplug the power cord from the wall.
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: 800-321-6699 • Fax: 800-996-3821
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ETA-S20RT
AC Distribution & Suppressor Unit
INTRODUCTION
Thank you for purchasing the ETA Systems ETA-S20RT AC Distribution and Suppressor Unit. The ETA-S20RT has been designed to
meet most installation requirements for AC power distribution and equipment power protection. To light your rack, the ETA-S20RT
incorporates a front panel USB port for lighting and equipment charging. The rear of the rack can be illuminated by the optional
AP-GNL18 gooseneck LED lamp connected via an XLR style socket. LED lamps are far superior in longevity along with heat reduction
when compared to traditional incandescent lamps, and the XLR input offers a better connection point over commonly used BNC type
bases.
By utilizing the Remote Activation feature, up to 20A of clean electrical power can be switched On or Off with a simple latched dry
contact closure. With the closure of the remote activation switch, 12VDC at 100mA is available to power a remote status LED.
An Emergency Power Down function, or EPD, can also be created by using the Remote Activation feature by simply keeping the
Remote Activation contact closed until a condition occurs that requires a system shut down. When the contacts are opened, it will
remove power from the switched outlets to protect equipment. A rear mounted bypass switch disables the Remote Activation should
the need arise.
The ETA-S20RT features noise filtering for unwanted Radio Frequency Interference (RFI) that is commonly introduced into AC lines by
nearby radio transmitters or wireless products. EMI filters are incorporated to reduce noise and Electromagnetic Interference (EMI)
from such items as electric motors and external switching power supplies. The benefit of these filters can be seen on video products
or audibly by reducing static pops and external signal interference.
Unstable AC Mains voltage is one of the main reasons for equipment failure. The amount of energy that can be injected into the power
system can be immense with voltages reaching 6kV or amperage peaks of 3000A. These spikes are very fast and usually only last for
a very short period of time. The ETA-S20RT’s circuitry is very fast and can suppress unwanted energy within a nanosecond response
and sustain the suppression up to 2 milliseconds, thus ensuring virtually trouble-free protection. If damage to the suppression circuitry
occurs, the AC fault LED will illuminate.
The ETA-S20RT incorporates EVS (Extreme Voltage Shutdown) to remove AC power from devices plugged into the switched outlets in
the event of unsafe high or low voltage conditions. A convenient front panel LED indicates if shutdown has occurred.
The ETA-S20RT offers power management control, noise filtering, and over/under voltage and spike/surge protection to make it one of
the most compact, effective power management protection systems on the market today.
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: 800-321-6699 • Fax: 800-996-3821
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Specifications are subject to change without notice.
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ETA-S20RT
AC Distribution & Suppressor Unit
KEY FEATURES
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9 Total Outlets
6 Rear Panel Switched Outlets
2 Rear Panel Unswitched Outlets
1 Front Panel Unswitched Convenience Outlet
Remote Activation via Latched Dry Contact Closure or DC Voltage
Remote Status LED Power Terminals
Rear Mounted Remote Activation Bypass Switch
EPD (Emergency Power Down) to Incorporate With Fire Control Panels
EVS (Extreme Voltage Shutdown) Clamping Spike & Surge Suppression Circuitry
RFI Noise Filtering to Reduce Radio Frequency Interference
EMI Filtering to Reduce Electromagnetic Interference
Circuit Breaker Protection @ 20A
Front Mounted USB Charger/Light Port
Rear Mounted XLR Connector For 12VDC LED Lamp (AP-GNL18) (Lamp Sold Separately)
Spike Suppression Up To 6000V
AC Fault Indicator
APPLICATIONS
The flexible ETA-S20RT was designed with features to be used in a variety of applications. The ETA-S20RT can be used solely for
protection against voltage surges or for AC distribution. The ETA-S20RT can also be used for power conditioning to eliminate or reduce
fuzzy video or frequency audio static pops. The following are just a few examples of applications where the ETA-S20RT can be used:
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Restaurants
Houses of Worship
Schools
Home Theaters
Office Buildings
Sports Bars
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: 800-321-6699 • Fax: 800-996-3821
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ETA-S20RT
AC Distribution & Suppressor Unit
FRONT PANEL FEATURES
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5
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1. Unswitched AC Outlet
The 120VAC outlet is always live when the ETA-S20RT power cord is plugged into an AC mains power source and voltage is present.
Note: The AC mains power switch does not affect the Unswitched AC Outlet but it is protected with surge protection circuitry.
2. AC Mains Breaker
The 20A rated breaker will open if the combined draw of all AC outlets exceeds 20A. Note: The breaker is designed to exceed its rating
for a short period of time. If the breaker is tripped, you must first remove the load from the ETA-S20RT and then push to reset.
3. Power Switch
To turn the ETA-S20RT On or Off, press the switch to the ON or OFF position. (See rear panel Remote Bypass Switch)
4. USB Port 5VDC 1A
Convenient USB port for connecting USB rack lighting or for charging external device batteries. Note: Will not charge all products.
Some devices require licensed charging circuitry.
5. Power ON Indicator
Will illuminate Blue when the AC Mains Power Switch is in the ON Position.
6. AC Fault Indicator
Although the Clamping Suppression circuit virtually assures protection from most transient voltage spikes and surges. Nature has a
way of occasionally creating electrical forces that are beyond the capabilities of any device to absorb without some degree of damage.
In the rare instance that this occurs and the circuit has been damaged, the Red “AC Fault” LED indicator will illuminate and an internal
buzzer will sound. The ETA-S20RT will shut Off permanently until the unit is repaired. Be advised that activation of this fault condition
and the associated repair is not covered under warranty. Note: If the AC Fault LED is illuminated, it is important to have all equipment
that was connected to that AC Mains Line be inspected for proper operation.
7. EVS Protect Indicator
This LED will illuminate when an extreme over or under voltage condition has occurred. A power line voltage below 95VAC or above
140VAC will trigger the EVS circuitry, removing power from the switched outlets. This abnormal voltage condition must be corrected
before the ETA-S20RT can be reset.
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: 800-321-6699 • Fax: 800-996-3821
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ETAsys.com
Specifications are subject to change without notice.
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ETA-S20RT
AC Distribution & Suppressor Unit
REAR PANEL FEATURES
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4
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1. AC Mains Input
Connect the 14 Gauge 9' (3m) power cord to a 20A 120VAC outlet to provide power to the ETA-S20RT.
2. AC Power Outlets
These six outlets are “Live” when the front panel power switch is activated. The two Unswitched Outlets are always live if the power
cord is connected to 120VAC.
3. XLR Light Socket
A 12VDC XLR light socket provides power for the optional AP-GNL18 light.
4. Light Socket Power Switch
Two-position switch to power On/Off the XLR light socket.
5. Remote Activation
There are two methods to remotely activate the ETA-S20RT:
A. External Switch - The Ext SW terminals are connected to a latching type dry contact closure to activate the
ETA-S20RT. Note: The Remote Bypass switch must be shorted for Remote Activation. This feature can be used for
Emergency Power Down (EPD), when tied into a normally closed latching contact closure (e.g. Fire Panel).
B. DC Voltage - When you apply 5V - 24VDC to the Ext SW terminals the unit will activate. See “Remote Activation
Drawings” for details.
The terminals marked “+12V” and “GND” can be connected to a remote panel LED (not included) to indicate function when remotely
activated.
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: 800-321-6699 • Fax: 800-996-3821
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Specifications are subject to change without notice.
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ETA-S20RT
AC Distribution & Suppressor Unit
INSTALLATION
Before installing, it is recommended to read the entire manual to ensure proper operation and that all features are being utilized. The
ETA-S20RT can be placed on a shelf or rack mounted in a standard 19" width rack. When rack mounted, placement within the rack is
flexible however the ETA-S20RT should be within 6' of a dedicated 20A AC outlet. When rack mounting, use Rack Rail type screws of
10⁄32" x 1". Always make sure the 20A outlet is properly inspected by a certified electrician prior to connecting the ETA-S20RT. Make sure
to inspect the equipment that will be connected to the ETA-S20RT to ensure it does not exceed 20A total amperage draw.
Remote Activation Connections Diagram
Remote Activation via Hard Contact Switch
Use External Key or Panel Switch, Hard Contact
To Remote Panel LED, Use the +12 and GND Terminals.
Note: Use a 2K ohm 1⁄8W Resistor In Series with +12VDC and LED
Remote Voltage Activation
Apply +5V–24VDC and Connect a Ground to the GND Terminal
to Activate the Unit.
Note: It is OK to Have Two Wires In the Same Terminal.
To Remote Panel LED, Use the +12 and GND Terminals.
Note: Use a 2K ohm 1⁄8W Resistor In Series with +12VDC and LED
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: 800-321-6699 • Fax: 800-996-3821
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ETA-S20RT
AC Distribution & Suppressor Unit
SPECIFICATIONS
Type
Power Conditioner & Suppressor
20A
Load Rating
Safety Listings
ETL (UL 60065 Standard)
Front Panel
Outlets
1 Unswitched
USB Port
1 USB Charge/Light Port (5VDC, 1A)
Rocker
Activation Switch
Circuit Breaker
Indicators
20A Resettable
AC Power On, AC Fault, EVS Protect
Rear Panel
AC Outlets
8 Outlets Total
LED Light Socket
LED Light Switch
Remote Activation
Remote Activation Connector
AC Mains Power Cord
XLR Socket to Provide 12VDC for Optional AP-GNL18 Gooseneck Lamp
Two position (On / Off)
Latching Type Dry Contact Closure or 5V-24VDC
4 Position 3.5mm Phoenix Type Connection
9' (2.74m), 12 Gauge, 20A Male AC Plug
Technical Data
Current Rating
20 Amps
Operating Voltage
102VAC - 132VAC
Power Consumption
Min. Spike Clamping Voltage
Max. Spike Clamping Voltage
Max. Spike Clamping Resp. Time
Spike Clamping Voltage @ 100A
Maximum Surge Current
Energy Rating @ 2ms
Noise Attenuation RFI
EVS Limits
8 Watts
460VRMS @ 3,000A
6000V
1 Nanosecond
1250Vp for 20µs
6,500A
600 Joules
10dB @ 10kHz / 40dB @ 100kHz / 100dB @ 10MHz
95VAC Low, 140VAC High, Auto Reset
5° – 35°C
Temperature Range
Humidity Range
5% to 95% Relative Humidity
Mechanical
Chassis Finish
Mounting
Height
Black
Rack Mount, 1 RU
1.75" (1RU, 44.5mm)
19" (482.6mm)
8" (203mm)
Width
Depth
Weight
5.5 lbs (2.49kg)
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: 800-321-6699 • Fax: 800-996-3821
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ETA-S20RT
AC Distribution & Suppressor Unit
NOTES:
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: 800-321-6699 • Fax: 800-996-3821
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Specifications are subject to change without notice.
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ETA-S20RT
AC Distribution & Suppressor Unit
LIMITED WARRANTY
All products manufactured by ETA Systems are warranted to the original dealer/installer, industrial or commercial purchaser to be
free from defects in material and workmanship and to be in compliance with our published specifications, if any. This warranty
shall extend from the date of purchase for a period of one year. Additionally, fuses and lamps carry no warranty. ETA Systems will
solely at its discretion, replace at no charge or repair free of charge defective parts or products when the product has been applied
and used in accordance with our published operation and installation instructions. We will not be responsible for defects caused by
improper storage, misuse (including failure to provide reasonable and necessary maintenance), accident, abnormal atmospheres, water
immersion, lightning discharge, or malfunctions when products have been modified or operated in excess of rated power, altered,
serviced or installed in other than a workmanlike manner. The original sales invoice should be retained as evidence of purchase under
the terms of this warranty. All warranty returns must comply with our returns policy set forth below. When products returned to ETA
Systems do not qualify for repair or replacement under our warranty, repairs may be performed at prevailing costs for material and labor
unless there is included with the returned product(s) a written request for an estimate of repair costs before any non-warranty work is
performed. In the event of replacement or upon completion of repairs, return shipment will be made with the transportation charges
collect.
EXCEPT TO THE EXTENT THAT APPLICABLE LAW PREVENTS THE LIMITATION OF CONSEQUENTIAL DAMAGES FOR PERSONAL
INJURY, ETA SYSTEMS SHALL NOT BE LIABLE IN TORT OR CONTRACT FOR ANY DIRECT, CONSEQUENTIAL OR INCIDENTAL
LOSS OR DAMAGE ARISING OUT OF THE INSTALLATION, USE OR INABILITY TO USE THE PRODUCTS. THE ABOVE WARRANTY IS
IN LIEU OF ALL OTHER WARRANTIES INCLUDING BUT NOT LIMITED TO WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE.
ETA Systems does not assume, nor does it authorize any other person to assume or extend on its behalf, any other warranty,
obligation, or liability. This warranty gives you specific legal rights and you may have other rights which vary from state to state.
SERVICE
Should your ETA-S20RT require service, please contact the ETA Systems warranty department at
1-877-689-8055, ext. 277 to obtain an RA number.
ETA Systems Tech Support can be reached at 1-800-321-6699.
©2011 ETA Systems. All rights reserved. All other trademarks are the property of their respective owners. ETA004090 RevA 7/11
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: 800-321-6699 • Fax: 800-996-3821
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