PDU-ATS-100A-208Y.120-3PH
100-amp Automatic Transfer Switch
208Y/120 3PH - Aluminum - NEMA 3R
Instruction Manual
Thank you for your purchase of the Larson Electronics
:
PDU-ATS-100A-208Y.120-3PH, 100-amp Automatic Transfer Switch
WARNING:
READ CAREFULLY BEFORE INSTALLING FIXTURE. RETAIN THESE INSTRUCTIONS FOR FUTURE REFERENCE.
CRITICAL SAFETY INSTRUCTIONS:
•
INSTALLATION SHOULD ONLY BE CONDUCTED BY A QUALIFIED ELECTRICIAN IN ACCORDANCE WITH NEC AND ANY
RELEVANT LOCAL BUILDING CODES.
•
RISK OF FIRE OR ELECTRIC SHOCK. FIXTURE INSTALLATION REQUIRES KNOWLEDGE OF ELECTRICAL
SYSTEMS. IF
NOT QUALIFIED, CONTACT A QUALIFIED ELECTRICIAN.
•
BE CERTAIN ELECTRICAL POWER IS OFF BEFORE AND DURING INSTALLATION AND MAINTENANCE.
•
MAKE SURE THE SUPPLY VOLTAGE IS THE SAME AS THE RATED FIXTURES VOLTAGE.
•
TO PREVENT WIRING DAMAGE OR ABRASION, DO NOT EXPOSE WIRING TO EDGES OF SHEET METAL OR SHARP
OBJECTS. SUITABLE FOR DAMP LOCATIONS.
The standard switch enclosure is a National Electrical Manufacturer’s Association (NEMA) and UL 3R type. UL and NEMA 3R type
enclosures primarily provide a degree of protection against falling rain and sleet; undamaged by the formation of ice on the enclosure.
Before installing, operating or servicing this equip-ment, read the SAFETY RULES (inside front cover) carefully. Comply strictly with all
SAFETY RULES to prevent accidents and/or damage to the equip-ment. The manufacturer recommends a copy of the SAFETY
RULES are made and posted near the trans-fer switch. Also, be sure to read all instructions and information found on tags, labels and
decals affixed to the equipment.
The Larson Electronics PDU-ATS-100A-208Y.120-3PH Automatic Transfer Switch is ideal for managing electrical loads between two
sources in industrial facilities. This 100-amp, 208Y/120 three-phase controller handles timing, sensing, exercise functions and transfer
commands. Constructed of aluminum, the unit is housed in a NEMA 3R enclosure.
MOUNTING
PDU-ATS-100A-208Y.120-3PH
are wall-mounted or surface-mounted. Install the transfer switch as close as possible to
the electrical loads that are to be connected to it. Mount the switch vertically to a rigid supporting structure. To prevent
switch distortion, level all mounting points. If necessary, use washers behind mounting holes to level the unit.
Larson Electronics, LLC
Phone: (800) 369-6671
Fax: (903) 498-3364
www.larsonelectronics.com
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3-POLE-MECHANISM
These switches (Figure
1
) are used with a three phase system,
when the three phase NEUTRAL line is to be connected to a
NEUTRAL lug and is not to be switched.
Solderless, screw-type terminal lugs are standard.
The conductor size range is as follows:
Switch Rating
Wire Range
100 A
#6-2/0 AWG
200A
#4-400 MCM
Conductor sizes must be adequate to handle the max-imum current to
which they will be subjected; based on the 75°C column of tables,
charts, etc. used to size conductors. The installation must comply fully
with all applicable codes, standards and regulations.
