EPNFDS-MTS-200A-3P
200A Explosion Proof Manual Transfer Switch
Class I, II, III - 3-Pole, 3-way Switch - (2) Cast Hubs
Instruction Manual
Thank you for your purchase of the Larson Electronics
EPNFDS-MTS-200A-3P Manual Transfer Switch.
WARNING
TO AVOID THE RISK OF FIRE, EXPLOSION OR ELECTRIC SHOCK, THIS PRODUCT SHOULD BE INSTALLED,
INSPECTED AND MAINTAINED BY A QUALIFIED ELECTRICIAN ONLY, IN ACCORDANCE WITH ALL
APPLICABLE ELECTRICAL CODES.
TO AVOID ELECTRIC SHOCK:
•
BE CERTAIN ELECTRICAL POWER IS OFF BEFORE AND DURING INSTALLATION AND MAINTENANCE.
•
PRODUCT MUST BE CONNECTED TO A WIRING SYSTEM WITH AN EQUIPMENT-GROUNDING
CONDUCTOR.
TO AVOID EXPLOSION:
•
MAKE SURE THE SUPPLY VOLTAGE IS WITHIN THE VOLTAGE RATING.
•
ENSURE THE MARKED T RATING IS LESS THAN THE IGNITION TEMPERATURE OF THE HAZARDOUS
ATMOSPHERE.
•
DO NOT OPERATE IN AMBIENT TEMPERATURES ABOVE THOSE INDICATED ON THE PRODUCT
NAMEPLATE.
•
DO NOT OPERATE IF THE LENS, CORD, SEALS, HOUSING, RECEPTACLES, ETC. IS CRACKED OR
DAMAGED. IF SO, DISCONTINUE USE AND CONTACT MANUFACTURER FOR REPLACEMENT PARTS.
•
ALL FASTENERS SHOULD BE PROPERLY SEATED.
The Larson Electronics EPNFDS-MTS-200A-3P explosion proof 200 amp manual transfer switch provides operators with a
Class I and II, Divisions 1 and 2 cast aluminum enclosure that provides overcurrent and short circuit protection of service
entrance, feeder or branch circuits, lighting, heating, appliance and motor circuits. This explosion proof manual transfer
switch features an EHD frame, a 3-Pole configuration and allows operators to manually switch between two power sources,
perform power isolation and switch loads in flammable work sites. The changeover switch operates on a maximum of 600V
AC and features one cast 3" conduit hub on the top and one cast 0.5" conduit hub on the bottom.
Installation
The Larson Electronics EPNFDS-MTS-200A-3P explosion proof 200 amp manual
transfer switch is designed for surface mounting applications. Mounting tabs are
provided that attach to the rear of the enclosure via screws, thus allowing the
enclosure to be mounted to any flat, sturdy surface that is capable of supporting
the load of the enclosure. Choose mounting location, and secure the enclosure
to the surface via heavy duty screws, or nuts and bolts. Mounting hardware is not
provided, but is available from Larson Electronics if needed.
Wiring
and Operation
We strongly encourage only a licensed electrician install this product!
Warning: Check product label for correct input voltage!
Secure each pair of wires according to the diagram. Utilize a junction box or similar
device and take precautionary steps for weatherproofing all connections if installed
in a location where water may come in contact with the unit. Conduit hubs are
available at the top and bottom of the enclosure for bringing in wiring. Ensure the
unit is properly grounded and that wiring is done according to all local and national
electrical/building codes. Take any measures necessary and as required to retain
explosion proof capabilities and ratings within the hazardous area as outlined by
applicable code.
Ensure cover is secured with all bolts and flamepath between lid and enclosure has not been
compromised before energizing. This three-way changeover switch has three positions: On/Off/On. The external on/off
lever can be locked into the "off" position with room for up to three padlocks for superior security. The internal circuit
breaker handle mechanism is a sliding plate type mounted to the cover. The circuit breaker is trip free of the external
handle mechanism. This unit can be used to switch between two sources of power, including between line voltage and a
generator.
Larson Electronics, LLC
Phone: (877) 348-9680
Fax: (903) 498-3364
www.larsonelectronics.com
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