Cut Sheet

Effective September, 2005
Copyright 2005
PAGE 8
800-621-1506
www.appletonelec.com
M- 8
M
Factory Sealed Control Stations and
Pilot Lights: EFDB/EFD and EDS Series
Explosionproof, Dust- Ignitionproof
UNILETS
®
for use with Threaded Metal Conduit.
Features: EDS Push Buttons
• Factory sealed—eliminates need for
adding sealing fittings and compound
at each conduit entrance.
• Heavy duty, 10 ampere 600V rated.
• Switch is enclosed in separate
sealing
chamber.
• Sealing chamber has smooth, double
flanges that mate both to cover and mount-
ing enclosure to provide flame-tight joints.
• Pigtail leads from push buttons are
factory sealed in sealing well.
• Stainless steel hex-head screws
attach
sealing chamber to cover and
mounting enclosure.
• Side rocker arm push button has
lockout holes.
• EFD/EFDB back box supplied with
internal ground screw.
Standard Materials
• EFDB control stations: malleable iron
body with aluminum cover.
• SPBB push putton: aluminum upper
barrel and phenolic lower barrel with
nylon plastic button (Dust Cap models
have neoprene buttons).
• SPLN/SPLS pilot light: aluminum
guard and body assembly; steel clamp-
ing ring; and tempered glass jewel.
• SSBA selector switch: aluminum
operator mechanism, nylon cam, and
sealed phenolic contact block.
• EDS control stations: malleable iron
body and cover; aluminum sealing cham-
ber; and nylon 6/6 operating handle.
Standard Finishes
• EFD/EFDB control stations: body, triple-
coat—(1) zinc electroplate, (2) dichro-
mate, and (3) epoxy powder coat.
• SPBB push button, SPLN/SPLS
pilot light and SSBA selector switch:
natural finish.
• EDS control stations: body and cover,
triple-coat—(1) zinc electroplate, (2) di-
chromate, and (3) epoxy powder coat
sealing chamber, natural finish.
Options
• Three position selector switches with
modified operation. Momentary contact
right position, spring return to center,
maintained contact left position. For
description and switch diagram see
page M-15. Add suffix
—SRC.
• Three position selector switches with
modified operation. Momentary contact
left position, spring return to center,
maintained contact right position. Add
suffix
—SLC.
• Alternate contacts add suffix —ALT.
• EFD/EFDB selector switch Lockout—
locks two- or three-position handle in
any position. Suffix
—LD.
• Push button front operated mush-
room head (momentary contact): In red,
add suffix
—NMRBRE; In green, add
suffix
— NMRBGR; In black, add suffix
— NMRBBL.
• EFD/EFDB pilot light jewel/guard
assembly. Order by suffixes if color
desired is other than red, as fol-
lows: Amber,
—JGBA; Blue, —JGBB;
Clear
—JGBC; Green, —JGBG; Opal,
—JGBO. For colored LED jewel/guard
assembly, order by suffixes: red
—LEDR;
green
—LEDG; amber —LEDA.
• EFD/EFDB pilot light transformers for
single pilot light per gang. Order by suffix:
Primary Lamp
Voltage Voltage Suffix
220 120 —TR-2
277 120 —TR-3
440 120 —TR-4
550 120 —TR-5
• EFD and EDS units may be supplied
with brazed hubs as 3, 4, and 5 gang
in a variety of hub configurations. See
Ordering Information page for how to
order these and other “custom” units by
adding suffixes to mounting body catalog
numbers
.
• Securing Rod for EFD/EFDB Push
Button Lockout Guard. Suffix
—SR.
• For complete list of options, see Cat-
alog Numbering Guide on Pages M-2
through M-4.
Compliances
• UL Standard 698.
• Class I, Div. 1 and 2; Class II, Div. 1 and
2. See listing pages for specific groups.
• Appleton malleable iron products con-
form to ASTM A47-77, Grade 32510,
which has the following properties: ten-
sile strength, 50,000 psi; yield, 32,000
psi; and elongation, 10%.
• Appleton aluminum products are
produced from high strength copper-
free (4/10 of 1% max.) alloy.
EDS factory sealed rocker arm push but-
ton control station—shows separate seal-
ing chamber and device construction.
Rocker arm has holes for lock.
Securing Rod for EFD/
EFDB Push Button
Lockout Guard—avail-
able as an optional
item as catalog number
NBL-SR (single guard
only) or add Suffix —SR
to push button catalog
number. Lockout Guard,
furnished as standard
with the EFD/ EFDB
push button, may also
be padlocked.
SPBB Design Features
SPBB factory
sealed push button
used in EFD/EFDB
Series—standard
type and unit with
dust cap.