Cut Sheet

Effective September, 2005
Copyright 2005
800-621-1506
www.appletonelec.com
PAGE 7
M- 7
M
Factory Sealed Control Stations and
Pilot Lights: EFDB/EFD and EDS Series
Explosionproof, Dust- Ignitionproof
UNILETS
®
for use with Threaded Metal Conduit.
Applications
•
Push buttons and selector switches
are used in conjunction with contactors
or magnetic starters for remote control
of motors. They provide circuit control
and/or selection.
•
Pilot lights provide visual assurance
that an electrical function is being
performed at a remote or local
location.
•
EFD/EFDB and EDS factory sealed
control stations confine arcing of device
within the enclosure, preventing ignition
of ignitable atmospheres during control
operation of motors and other equipment.
•
Used in classified areas where
flammable vapors, gases or highly
combustible dusts are present.
•
For installation in chemical and
petrochemical plants, refineries, and
other process industries.
Features: EFD/EFDB Factory Sealed Push
Buttons and Selector Switches
•
Eliminate need for adding sealing
fittings and compound at each conduit
entrance.
•
Heavy-duty, 10 ampere 600V rated.
•
Dozens of possible combinations of
push buttons, pilot lights and selector
switches.
•
Smooth, rounded integral bushing in
each EFD/EFDB hub protects conductor
insulation.
•
Accurately tapped, tapered hubs for
tight, rigid joints and ground continuity.
•
Stainless steel push button shaft
operates within stainless steel bushing
assuring long, maintenance-free operation.
•
Push button and selector switch
contacts are silver cadmium oxide which
are “sealed” in lower phenolic cham-
ber isolated from corrosive elements.
Assures positive contact and long,
trouble-free operation.
•
Enclosed stainless steel helper spring
prevents accidental operation of push
button in severe vibration installations.
•
Push button models also available
with Dust Cap for use in areas where
excessive dust, moisture or corrosive
conditions are encountered.
•
Corrosion-resistant captive stainless
steel hex-head cap screws hold EFKB
covers to body.
•
All EFD/EFDB front-operated push
buttons are suppled with lockout type
guards as standard. Hole in guard
will accept locks with up to 1/4” hasp.
Permits locking of push button to
prevent unauthorized operation.
•
Clearly marked terminals with brass
screws assure quick, easy wiring.
Features: EFD/EFDB Pilot Lights
•
Factory sealed pilot lights supplied
with red jewel/guard assembly and
120V, 6W type 6S6 lamp.
•
Models also available in combination
with factory sealed push buttons and
selector switches.
Features: EFD/EFDB
Selector Switches
•
Factory sealed selector switch-
es furnished with nylon cam-oper-
ated, heavy-duty push buttons for
either two-position or three-position
maintained contact operation.
•
High thermal and arc resistance,
high dielectric strength.
EFDB Photocontrol
EFD Combination Pilot
Light and Push Buttons
EDS Rocker Arm
Push Button
EFDB Pilot Light