EFD/EFDB and EDS Series Factory Sealed Control Stations
Explosionproof, Dust-Ignitionproof
NEC:
Class I, Division 1 and 2, Groups B, C, D
Class II, Division 1 and 2, Groups E, F, G
Class III
NEMA 3, 7CD, 9EFG
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 conne
arcing of device within the enclosure, preventing ignition of
ignitable atmospheres during control operation of motors and
other equipment.
• Used in classied areas where ammable vapors, gases or
highly combustible dusts are present.
• For installation in chemical and petrochemical plants, reneries,
and other process industries.
Features
•
EFD/EFDB Push Buttons and Selector Switches
— Eliminate need for adding sealing ttings and compound at
each conduit entrance.
— Heavy-duty push buttons, 10 Amp, 600 Vac 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 chamber 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 momentary push buttons are supplied 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.
• EFD/EFDB Pilot Lights
— Factory sealed pilot lights supplied with red jewel/guard
assembly and 120 Vac/Vdc, 50/60 Hz, 6 Watt, Type 6S6 lamp.
— Models also available in combination with factory sealed push
buttons and selector switches.
• EFD/EFDB Selector Switches
— Factory sealed selector switches furnished with nylon cam-
operated, heavy-duty push buttons for either 2-position or
CONTROLS: NEC/CEC EXPLOSIONPROOF CONTROL STATIONS AND SWITCHES
3-position maintained contact operation.
— High thermal and arc resistance, high dielectric strength.
• EDS Push Buttons
— Factory sealed — eliminates need for adding sealing ttings
and compound at each conduit entrance.
— Heavy duty, 10 Amp, 600 Vac.
— Switch is enclosed in separate sealing chamber.
EFDB Push Button EFDB Photocontrol
EDS Rocker Arm
Push Button
EFDB Pilot Light EFDB Selector Switch EFDB Maintained
— Sealing chamber has smooth, double anges that mate both
to cover and mounting enclosure to provide ame-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 backbox supplied with internal ground screw.
Standard Materials
• EFDB control stations: malleable iron body with copperfree
(4/10 of 1% max.) aluminum cover
• SPBB push putton: copperfree (4/10 of 1% max.) aluminum
upper barrel and phenolic lower barrel with nylon plastic button
(dust cap models have neoprene buttons)
• SPLN/SPLS pilot light: copperfree (4/10 of 1% max.) aluminum
guard and body assembly; steel clamping ring; and tempered
glass jewel
• SSBA selector switch: copperfree (4/10 of 1% max.) aluminum
operator mechanism, nylon cam, and sealed phenolic contact
block
• EDS control stations: malleable iron body and cover; copperfree
(4/10 of 1% max.) aluminum sealing chamber; and nylon
operating handle
EFDB Push Button
with Dust Cap
EFD Combination Pilot
Light and Push Buttons
Push Button
Select items suitable for Class I, Division 1 and 2, Groups B, C and D; Class II, Groups E, F and G and Class III. See product selection pages for suitable items.
4
Visit our website at www.emerson.com or contact us at (800) 621-1506.
© January 2021
EFD/EFDB and EDS Series Factory Sealed Control Stations
Explosionproof, Dust-Ignitionproof
NEC/CEC:
Class I, Division 1 and 2, Groups B, C, D
Class II, Division 1 and 2, Groups E, F, G
Class III
NEMA 3, 7CD, 9EFG
Standard Finishes
• EFD/EFDB control stations: body, triple-coat—(1) zinc
electroplate, (2) chromate, and (3) epoxy powder coat
• SPBB push button, SPLN/SPLS pilot light and SSBA selector
switch: natural nish
• EDS control stations: body and cover: triple-coat—(1) zinc
electroplate, (2) chromate, and (3) epoxy powder coat sealing
chamber, natural nish
Options
• 1- or 2-gang copperfree (4/10 of 1% max.) aluminum bodies
and covers available. Add sufx – A.
• Three position selector switches with modied operation.
— Momentary contact right position, spring return to center,
maintained contact left position. Add sufx —SRC.
— Momentary contact left position, spring return to center,
maintained contact right position. Add sufx —SLC.
— Alternate contacts add sufx —ALT .
• EFD/EFDB selector switch lockout locks two or three position
handle in any position. Add sufx —LD.
• Push button front operated mushroom head (momentary
contact): Order by sufxes for desired color as follows:
— Red —NMRBRE
— Green —NMRBGR
— Black —NMRBBL
• EFD/EFDB pilot light jewel/guard assembly. Order by sufxes if
color desired is other than red, as follows:
— Amber —JGBA
— Blue —JGBB
— Clear —JGBC
— Green —JGBG;
— Opal —JGBO
• For colored LED jewel/guard assembly, order by sufxes:
— Red —LEDR
— Green —LEDG
— Amber —LEDA
• EFD/EFDB pilot light transformers for single pilot light per gang.
Order by sufx:
Primary Voltage Lamp 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 congurations. See Ordering
Information page for how to order these and other ”custom”
units by adding sufxes to mounting body catalog numbers.
• Securing Rod for EFD/EFDB Push Button Lockout Guard. Add
sufx —SR.
• NPBRKT Nameplate Mounting Bracket to make circuit
description/identication easy.
— Pre-drilled holes in bottom of bracket allow direct mounting
to control stations with existing cover bolts.
— Pre-drilled holes in middle of bracket allow mounting of
customer’s circuit identication nameplate; epoxy glue may
also be used for mounting (phenolic nameplate not included).
— Bracket eliminates costly eld installation of drilling and
tapping to accommodate circuit identication nameplate.
— Brackets t side-by-side on 2-, 3- and 4-gang boxes and
3-devices.
NEC Certifications and Compliances
• UL Standards: UL 508, UL 698, UL 1203
• cULus Listed: E10449, E81751
Related Products
• For Hazardous Location Photocontrols, see Lighting Section.
Illustrated Features
EDS factory sealed rocker arm push button control station —
shows separate sealing chamber and device construction.
Rocker arm has holes for lock.
Securing Rod for EFD/EFDB Push Button
Lockout Guard — available 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 factory sealed push
button used in EFD/EFDB Series —
standard type and unit with dust cap.
SPBB Design Features
CONTROLS: NEC/CEC EXPLOSIONPROOF CONTROL STATIONS AND SWITCHES
Select items suitable for Class I, Division 1 and 2, Groups B, C and D; Class II, Groups E, F and G and Class III. See product selection pages for suitable items.
Visit our website at www.emerson.com or contact us at (800) 621-1506.
© January 2021
5
EFD/EFDB and EDS Series Factory Sealed Control Stations
Explosionproof, Dust-Ignitionproof
NEC/CEC:
Class I, Division 1 and 2, Groups B, C, D
Class II, Division 1 and 2, Groups E, F, G
Class III
NEMA 3, 7CD, 9EFG
Catalog Numbering Guide
EFDC T – 10 J1U2 JGBG SNPTESTQ U2 SR SNPRUNQ
NEC Certified
Backbox/Hub
Arrangement:
EFD - Dead-End
EFDC - Feed-thru
EFK - Cover Only
Box Type:
B - 1-Gang or
Cover Only
L - 3-Device
T - Tandem
# of Gangs:
1 - 1-Gang
2 - 2-Gang
Blank - Tandem,
Cover Only or
3-Device
Full Catalog # EFDCT10-J1U2-JGBG-SNPTESTQ-U2-SNPTESTQ-SNPRUNQ
Feed-Thru Tandem Box with 1” Hubs.
In Gang #1: 2 Momentary Push Buttons and a Green Pilot Light.
In Gang #2: 2 Momentary Push Buttons with One Securing Rod.
With Special ”Test” and ”Run” Push Button Nameplates.
Options
Options Description Suffix
Momentary Push Button Securing Rod SR
Selector Switch Lockout LD
Spring Return From Right Selector Switch (3 Positions Only) SRC
Spring Return From Left Selector Switch (3 Positions Only) SLC
Alternate Contacts Selector Switch ALT
Change One Red Lens to Green Lens JGBG
Change One Red Lens to Opal Lens JGBO
Change One Red Lens to Amber Lens JGBA
Change One Red Lens to Blue Lens JGBB
Change One Red Lens to Clear Lens JGBC
Add 220/120 Vac Transformer (J1 Device Only) TR2
Add 277/120 Vac Transformer (J1 Device Only) TR3
Add 440/120 Vac Transformer (J1 Device Only) TR4
Add 550/120 Vac Transformer (J1 Device Only) TR5
Change One Red Pilot to Red LED LEDR
CONTROLS: NEC/CEC EXPLOSIONPROOF CONTROL STATIONS AND SWITCHES
Change One Red Lens to Green LED LEDG
Change One Red Lens to Amber LED LEDA
Add Red Mushroom Head to Momentary Push Button NMRBRE
Add Black Mushroom Head to Momentary Push Button NMRBBL
Add Green Mushroom Head to Momentary Push Button NMRBGR
Locking Guard for Maintained Push Button SMPBLG
Hub Size:
50 - 1/2”
75 - 3/4”
10 - 1”
Device for
First Gang:
See Devices
Special Nameplate
for First Gang:
See Accessories
Options for
First Gang:
See Accessories
Special Nameplate
for Second Gang:
See Accessories
Device for
Second Gang:
See Devices
Options for
Second Gang:
See Accessories
Select items suitable for Class I, Division 1 and 2, Groups B, C and D; Class II, Groups E, F and G and Class III. See product selection pages for suitable items.
6
Visit our website at www.emerson.com or contact us at (800) 621-1506.
© January 2021
EFD/EFDB and EDS Series Factory Sealed Control Stations
Explosionproof, Dust-Ignitionproof
NEC/CEC:
Class I, Division 1 and 2, Groups B, C, D
Class II, Division 1 and 2, Groups E, F, G
Class III
NEMA 3, 7CD, 9EFG
Devices
Available in
Device Description
One Pilot Light (Red Standard) Y J1
Two Pilot Lights Y J2
One Pilot Light and One Momentary Push Button Y J1U1
One Pilot Light and Two Momentary Push Buttons Y Y J1U2
One Pilot Light and One Maintained Push Button Y J1UM1
One Pilot Light and One Dust Cap Push Button Y J1DU1
One Pilot Light and One 12 Selector Switch (2 Position, 2 Circuit) Y J112
One Pilot Light and One 35 Selector Switch (2 Position, 4 Circuit) Y J135
One Pilot Light and One 102 Selector Switch (3 Position, 2 Circuit) Y J1102
One Pilot Light and One 345 Selector Switch (3 Position, 4 Circuit) Y J1345
One Monetary Push Button Y U1
Two Monetary Push Buttons Y U2
Two Side-By-Side Momentary Push Buttons Y U2DBL
Three Monetary Push Buttons Y Y U3
One Momentary Push Button and One Maintained Push Button Y U1UM1
One Momentary Push Button and One Dust Cap Push Button Y U1DU1
One Momentary Push Button and One 12 Selector Switch (2 Position, 2 Circuit) Y U112
One Momentary Push Button and One 35 Selector Switch (2 Position, 4 Circuit) Y U135
One Momentary Push Button and One 102 Selector Switch (3 Position, 2 Circuit) Y U1102
One Momentary Push Button and One 345 Selector Switch (3 Position, 4 Circuit) Y U1345
One Maintained Push Button (Mushroom Head - Red) Y UM1
Two Maintained Push Button Y UM2
One Maintained and One Dust Cap Push Button Y UM1DU1
One Maintained Push Button and One 12 Selector Switch (2 Position, 2 Circuit) Y UM112
One Maintained Push Button and One 35 Selector Switch (2 Position, 4 Circuit) Y UM135
One Maintained Push Button and One 102 Selector Switch (3 Position, 2 Circuit) Y UM1102
One Maintained Push Button and One 345 Selector Switch (3 Position, 4 Circuit) Y UM1345
One Dust Cap Push Button Y DU1
Two Dust Cap Push Buttons Y DU2
One Dust Cap and One 12 Selector Switch (2 Position, 2 Circuit) Y DU112
One Dust Cap and One 35 Selector Switch (2 Position, 4 Circuit) Y DU135
One Dust Cap and One 102 Selector Switch (3 Position, 2 Circuit) Y DU1102
One Dust Cap and One 345 Selector Switch (3 Position, 4 Circuit) Y DU1345
One 12 Selector Switch (2 Position, 2 Circuit) Y 12
One 35 Selector Switch (2 Position, 4 Circuit) Y 35
One 102 Selector Switch (3 Position, 2 Circuit) Y 102
One 345 Selector Switch (3 Position, 4 Circuit) Y 345
120 Vac Photocell Y PC120
277 Vac Photocell Y PC277
Three Dust Cap Push Buttons Y DU3
One Momentary and Two Maintained Push Buttons Y U1UM2
Two Momentary and One Maintained Push Buttons Y Y U2UM1
Three Maintained Push Buttons Y UM3
Three Pilot Lights Y J3
Two Pilot Lights and One Momentary Push Button Y J2U1
One Pilot Light and Two Dust Cap Push Buttons Y J1DU2
Two Pilot Lights and One Dust Cap Push Button Y J2DU1
One Pilot Light and Two Maintained Push Buttons Y J1UM2
Two Pilot Lights and One Maintained Push Button Y J2UM1
1-G, 2-G,
Tandem
Available in
3-Device Suffix
CONTROLS: NEC/CEC EXPLOSIONPROOF CONTROL STATIONS AND SWITCHES
Select items suitable for Class I, Division 1 and 2, Groups B, C and D; Class II, Groups E, F and G and Class III. See product selection pages for suitable items.
Visit our website at www.emerson.com or contact us at (800) 621-1506.
© January 2021
7
EFD/EFDB Series Factory Sealed Control Stations
Explosionproof, Dust-Ignitionproof
NEC/CEC:
Class I, Division 1 and 2, Groups B, C, D
Class II, Division 1 and 2, Groups E, F, G
Class III
NEMA 3, 7CD, 9EFG
Nameplates
Description Suffix
Mushroom Head Push Buttons (Maintained and Momentary)
Start MNPSTQ
Stop MNPSPQ
Emergency Stop MNPESTPQ
Blank MNPBQ
Pilot Light Nameplates
Blank LNPBQ
Forward LNPFWDQ
Jog LNPJOGQ
Run LNPRUNQ
Stop LNPSPQ
Start LNPSTQ
Down LNPDOWNQ
Fast LNPFASTQ
Slow LNPSLOWQ
Raise LNPRAISEQ
Lower LNPLOWERQ
Reset LNPRESETQ
Off LNPOFFQ
On LNPONQ
Reverse LNPREVQ
Close LNPCLOSEQ
Open LNPOPENQ
Up LNPUPQ
Test LNPTESTQ
Low LNPLOWQ
High LNPHIGHQ
Two Position Selection Switch Nameplates
Forward—Reverse SLNPFRQ
Hand—Auto
On—Off SLNPOO
Start—Stop SLNPSS
Blank SLNPBQ
CONTROLS: NEC/CEC EXPLOSIONPROOF CONTROL STATIONS AND SWITCHES
Up—Down SLNPUDQ
Run—Jog SLNPRJQ
Auto—Hand SLNPAHQ
Off—Remote SLNPORQ
SLNPHAQ
Description Suffix
Three Position Selection Switch Nameplates
Forward-Off-Reverse SLNPFORQ
Hand—Off—Auto
Run—Off—Jog SLNPROJQ
Blank SLNPB3
Reverse—Off—Forward SLNPROFQ
Auto—Off—Hand SLNPAOHQ
Hand—Off—Remote SLNPHORQ
1—Off—2 SLNP102Q
Jog—Off—Run SLNPJORQ
Stop—Run—Start SLNPSRSQ
Local—Off—Remote SLNPLORQ
Jog—Off—Auto SLNP-JOAQ
Momentary Push Buttons
For Rectangular Weatherboot Style Only (Not for round weatherboot style)
Blank
Forward SNPFWDQ
Jog SNPJOGQ
Run SNPRUNQ
Stop
Start
Down SNPDOWNQ
Fast SNPFASTQ
Slow SNPSLOWQ
Raise SNPRAISEQ
Lower SNPLOWERQ
Reset SNPRESETQ
Off SNPOFFQ
On SNPONQ
Reverse SNPREVQ
Close SNPCLOSEQ
Open SNPOPENQ
Up SNPUPQ
Test SNPTESTQ
Low SNPLOWQ
High SNPHIGHQ
SLNPHOAQ
SNPBQ
SNPSPQ
SNPSTQ
Custom nameplates are not available.
Included as standard (no need to use suffix).
Select items suitable for Class I, Division 1 and 2, Groups B, C and D; Class II, Groups E, F and G and Class III. See product selection pages for suitable items.
8
Visit our website at www.emerson.com or contact us at (800) 621-1506.
© January 2021
EFD/EFDB Series Factory Sealed Control Stations
Explosionproof, Dust-Ignitionproof
10 Amp, 600 Vac Max. for Heavy Duty Use. Furnished with Internal Ground Screw.
NEC/CEC:
Class I, Division 1,Groups B, C, D
Class I, Division 2, Groups B, C, D
Class II, Division 1 and 2, Groups E, F, G
Class III
NEMA 3, 7CD, 9EFG
Hub Size
(Inches) Description
1-Gang — Momentary Contact
1/2
3/4 EFDB175-U1 EFDCB175-U1
1 EFDB110-U1 EFDCB110-U1
1/2
3/4 EFDB175-U2 EFDCB175-U2
1 EFDB110-U2 EFDCB110-U2
1-Gang — Red Mushroom Head — Maintained Contact – Emergency Stop Nameplate
1/2
3/4 EFDB175-UM1 EFDCB175-UM1
1 EFDB110-UM1 EFDCB110-UM1
2-Gang — Momentary Contact
1/2
3/4 EFD275-U1 EFDC275-U1
1 EFD210-U1 EFDC210-U1
1 Circuit
Universal
2 Circuits
Universal
1 Circuit
Universal
2 Circuits
Universal
Nameplate
Marking
Start/Stop
Start/Stop
Emergency
Stop
Start/Stop
Catalog Number
Dead-End Feed-Thru
EFDB150-U1 EFDCB150-U1
EFDB150-U2 EFDCB150-U2
EFDB150-UM1 EFDCB150-UM1
CONTROLS: NEC/CEC EXPLOSIONPROOF CONTROL STATIONS AND SWITCHES
EFD250-U1 EFDC250-U1
1/2
3/4 EFD275-U2 EFDC275-U2
1 EFD210-U2 EFDC210-U2
3-Device — Momentary Contact
1/2
3/4 EFDL75-U3 EFDCL75-U3
1 EFDL10-U3 EFDCL10-U3
Malleable iron body and aluminum cover. For aluminum body, add suffix —A.
Aluminum body not available.
Shaded area indicates items suitable for Class I, Division 1 and 2, Groups B, C and D; Class II, Groups E, F and G and Class III.
For Class I, Division 1, Group B, external seals must be installed at each conduit entrance.
Visit our website at www.emerson.com or contact us at (800) 621-1506.
© January 2021
4 Circuits
Universal
3 Circuits
Universal
Start/Stop
Start/Stop
EFD250-U2 EFDC250-U2
EFDL50-U3 EFDCL50-U3
9
EFD/EFDB Series Factory Sealed Control Stations
Combination Push Button and Pilot Light. Explosionproof, Dust-Ignitionproof
10 Amp, 600 Vac Max. for Heavy Duty Use. Momentary Contact. Furnished with Internal Ground Screw.
NEC/CEC:
Class I, Division 1,Groups B, C, D
Class I, Division 2, Groups B, C, D
Class II, Division 1 and 2, Groups E, F, G
Class III
NEMA 3, 7CD, 9EFG
1-Gang
1 Circuit, 1 Pilot Light 2 Circuit, 1 Pilot Light
2-Gang
2 Circuit, 1 Pilot Light 2 Circuit, 2 Pilot Light
3-Device
Hub Size
(Inches) Description
1/2
3/4 EFDB175-J1U1 EFDCB175-J1U1
1 EFDB110-J1U1 EFDCB110-J1U1
1/2
3/4 EFDB175-J1U2 EFDCB175-J1U2
1 EFDB110-J1U2 EFDCB110-J1U2
1/2
3/4 EFD275-J1U2 EFDC275-J1U2
1 EFD210-J1U2 EFDC210-J1U2
1/2
3/4 EFD275-J2U2 EFDC275-J2U2
1 EFD210-J2U2 EFDC210-J2U2
1/2
3/4 EFDL75-J1U2 EFDCL75-J1U2
1 EFDL10-J1U2 EFDCL10-J1U2
1 Circuit
Universal and
1 Pilot Light
2 Circuit
Universal and
1 Pilot Light
2 Circuit
Universal and
1 Pilot Light
2 Circuit
Universal and
2 Pilot Lights
2 Circuit
Universal and
1 Pilot Light
Nameplate
Marking
EFDB150-J1U1 EFDCB150-J1U1
Start/Stop
EFDB150-J1U2 EFDCB150-J1U2
Start/Stop
EFD250-J1U2 EFDC250-J1U2
Start/Stop
EFD250-J2U2 EFDC250-J2U2
Start/Stop
EFDL50-J1U2 EFDCL50-J1U2
Start/Stop
Catalog Number
Dead-End Feed-Thru
1/2
3/4 EFDL75-J2U1 EFDCL75-J2U1
2 Circuit, 1 Pilot Light
2-Gang Tandem
2 Circuit, 2 Pilot Lights
CONTROLS: NEC/CEC EXPLOSIONPROOF CONTROL STATIONS AND SWITCHES
For tandem bodies, external seals must be installed within 1.5 meters (5 feet) of each conduit entrance for Class I, Groups C and D.
Pilot Lights furnished with 6 Watt, 120 Vac 6S6 lamp and red jewel—Other colored jewels and LED’s listed under accessories and parts.
Malleable iron body and aluminum cover. For aluminum body, add suffix —A.
Aluminum body not available.
Shaded area indicates items suitable for Class I, Division 1 and 2, Groups B, C and D; Class II, Groups E, F and G and Class III.
For Class I, Division 1, Group B, external seals must be installed at each conduit entrance.
1 Circuit, 2 Pilot Lights
2 Circuit, 1 Pilot Light
1 EFDL10-J2U1 EFDCL10-J2U1
1/2
3/4 EFDT75-J1U2 EFDCT75-J1U2
1 EFDT10-J1U2 EFDCT10-J1U2
1/2
3/4 EFDT75-J2U2 EFDCT75-J2U2
1 EFDT10-J2U2 EFDCT10-J2U2
10
1 Circuit
Universal and
2 Pilot Lights
2 Circuit
Universal and
1 Pilot Light
2 Circuit
Universal and
2 Pilot Lights
Start/Stop
Start/Stop
Start/Stop
Visit our website at www.emerson.com or contact us at (800) 621-1506.
EFDL50-J2U1 EFDCL50-J2U1
EFDT50-J1U2 EFDCT50-J1U2
EFDT50-J2U2 EFDCT50-J2U2
© January 2021
EDS Series Factory Sealed Control Stations
Push Button. With Rocker Arm Handle. Explosionproof, Dust-Ignitionproof
10 Amp, 600 Vac Max. for Heavy Duty Use. Furnished with Internal Ground Screw.
NEC/CEC:
Class I, Division 1 and 2, Groups B, C, D
Class II, Division 1 and 2, Groups E, F, G
Class III
NEMA 3, 7CD, 9EFG
Hub Size
(Inches) Description
1-Gang – Malleable Iron Body and Cover — Momentary Contact
1/2
3/4 EDS175-RU1 EDSC175-RU1
1 EDS110-RU1 EDSC110-RU1
1/2
3/4 EDS175-RU2 EDSC175-RU2
1 EDS110-RU2 EDSC110-RU2
1 Circuit 2 Circuit
2-Gang – Malleable Iron Body and Cover — Momentary Contact
1/2
3/4 EDS275-RU1 EDSC275-RU1
1 EDS210-RU1 EDSC210-RU1
2 Circuit
1/2
3/4 EDS275-RU2 EDSC275-RU2
1 EDS210-RU2 EDSC210-RU2
1 Circuit
Universal
2 Circuits
Universal
2 Circuits
Universal
4 Circuits
Universal
Nameplate
Marking
Specify
Specify
Specify
Specify
Catalog Number
Dead-End Feed-Thru
EDS150-RU1 EDSC150-RU1
— EDSC150-RU2
— EDSC250-RU1
CONTROLS: NEC/CEC EXPLOSIONPROOF CONTROL STATIONS AND SWITCHES
— EDSC250-RU2
4 Circuit
Catalog Number
Description Nameplate Marking
Cover and Chamber with Device — Momentary Contact
When installed on a 1/2” or 3/4” single gang box the cover assembly is suitable for use in Group B environments
but will not be marked Group B.
1 Circuit Universal Specify EFK-RU1-Q EFSR-U1Q
2 Circuits Universal
For aluminum body add suffix —A (Not suitable for Class I, Group B).
Shaded area indicates items suitable for Class I, Group B, in addition to Class I, Groups C and D; Class II, Groups E, F, and G; and Class III.
Visit our website at www.emerson.com or contact us at (800) 621-1506.
© January 2021
Specify EFK-RU2-Q EFSR-U2Q
Cover Assembly Switch Only
11
EFD/EFDB Series Factory Sealed Control Stations
Dust Cap Push Button. Explosionproof, Dust-Ignitionproof
10 Amp, 600 Vac Max. for Heavy Duty Use. Momentary Contact. Furnished with Internal Ground Screw.
NEC/CEC:
Class I, Division 1,Groups B, C, D
Class I, Division 2, Groups B, C, D
Class II, Division 1 and 2, Groups E, F, G
Class III
NEMA 3, 7CD, 9EFG
1-Gang
3-Device
Hub Size
(Inches) Description
3/4
1 EFDB110-DU1 EFDCB110-DU1
3/4
1 EFDB110-DU2 EFDCB110-DU2
3/4
1 EFDL10-J1DU2 EFDCL10-J1DU2
1 Circuit
Universal
2 Circuits
Universal
2 Circuits
Universal and
1 Pilot Light
Nameplate
Marking
Start/Stop
Start/Stop
Start/Stop
EFDB175-DU1 EFDCB175-DU1
EFDB175-DU2 EFDCB175-DU2
EFDL75-J1DU2 EFDCL75-J1DU2
Catalog Number
Dead-End Feed-Thru
CONTROLS: NEC/CEC EXPLOSIONPROOF CONTROL STATIONS AND SWITCHES
Malleable iron body and aluminum cover. For aluminum body, add suffix —A.
Aluminum body not available.
Shaded area indicates items suitable for Class I, Groups B, C and D; Class II, Groups E, F, and G; and Class III. For Class I, Group B external seals must be
installed at each conduit entrance.
12
Visit our website at www.emerson.com or contact us at (800) 621-1506.
© January 2021
EFD/EFDB Series Factory Sealed Control Stations
Pilot Lights. Explosionproof, Dust-Ignitionproof
Pilot Light Furnished with 6 Watt, 120 Vac 6S6 Lamp and Red Jewel.† Furnished with Internal Ground Screw.
NEC/CEC:
Class I, Division 1,Groups B, C, D
Class I, Division 2, Groups B, C, D
Class II, Division 1 and 2, Groups E, F, G
Class III
NEMA 3, 7CD, 9EFG
1-Gang
2-Gang
Hub Size
(Inches) Description
1/2
3/4 EFDB175-J1 EFDCB175-J1
1 EFDB110-J1 EFDCB110-J1
1/2
3/4 EFDB175-J2 EFDCB175-J2
1 EFDB110-J2 EFDCB110-J2
1/2
3/4 EFD275-J1 EFDC275-J1
1 EFD210-J1 EFDC210-J1
1/2
3/4 EFD275-J2 EFDC275-J2
1 EFD210-J2 EFDC210-J2
One Pilot Light
Two Pilot Lights
Two Pilot Lights
Four Pilot Lights
EFDB150-J1 EFDCB150-J1
EFDB150-J2 EFDCB150-J2
EFD250-J1 EFDC250-J1
EFD250-J2 EFDC250-J2
Catalog Number
Dead-End Feed-Thru
CONTROLS: NEC/CEC EXPLOSIONPROOF CONTROL STATIONS AND SWITCHES
3-Device
1/2
3/4 EFDL75-J3 EFDCL75-J3
1 EFDL10-J3 EFDCL10-J3
2-Gang Tandem
1/2
3/4 EFDT75-J1 EFDCT75-J1
1 EFDT10-J1 EFDCT10-J1
1/2
3/4 EFDT75-J2 EFDCT75-J2
1 EFDT10-J2 EFDCT10-J2
Two Pilot Lights
Malleable iron body and aluminum cover. For aluminum body, add suffix —A.
Aluminum body not available. For tandem bodies, external seals must be installed within 1.5 meters (5 feet) of each conduit entrance for Class I, Groups C and D.
Other colored jewels, pilot lights and LED’s listed under accessories and parts.
Shaded area indicates items suitable for Class I, Groups B, C and D; Class II, Groups E, F, and G; and Class III.
For Class I, Division 1, Group B, external seals must be installed at each conduit entrance.
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© January 2021
Four Pilot Lights
Three Pilot Lights
Two Pilot Lights
Four Pilot Lights
EFDL50-J3 EFDCL50-J3
EFDT50-J1 EFDCT50-J1
EFDT50-J2 EFDCT50-J2
13
EFDB Series Factory Sealed Control Stations
Selector Switches and Photocontrols. Explosionproof, Dust-Ignitionproof
10 Amp, 600 Vac Max. for Heavy Duty Use. Furnished with Internal Ground Screw.
NEC/CEC:
Class I, Division 1 and 2, Groups B, C, D
Class II, Division 1 and 2, Groups E, F, G
Class III
NEMA 3, 7CD, 9EFG
Hub Size
(Inches) Description
2 Position Selector Switches — 1-Gang — Maintained Contact
1/2
2 Position,
3/4 EFDB175-12 EFDCB175-12
1/2
Nameplate: Hand—Auto
3 Position Selector Switches — 1-Gang — Maintained Contact
Three position units can be supplied for momentary contact right position, spring return to center, maintained contact left position. Add suffix —SRC.
Nameplate: Hand—Off—Auto
Selector Switches Nameplates
Two Position
Three Position
Selector Switch Locking Devices — Permit locking in any position
CONTROLS: NEC/CEC EXPLOSIONPROOF CONTROL STATIONS AND SWITCHES
3/4 EFDB175-35 EFDCB175-35
1/2
3/4 EFDB175-102 EFDCB175-102
1/2
3/4 EFDB175-345 EFDCB175-345
Forward—Reverse SLNP-FRQ Forward—Off—Reverse SLNP-FORQ
Hand—Auto SLNP-HAQ Hand—Off—Auto SLNP-HOAQ
On—Off SLNP-OO Run—Off—Jog SLNP-ROJQ
Start—Stop SLNP-SS Blank SLNP-B3
Blank SLNP-BQ Reverse—Off—Forward SLNP-ROFQ
Up—Down SLNP-UDQ Auto—Off—Hand SLNP-AOHQ
Run—Job SLNP-RJQ Hand—Off—Remote SLNP-HORQ
Auto—Hand SLNP-AHQ 1—Off—2 SLNP-102Q
Off—Remote SLNP-ORQ Jog—Off—Run SLNP-JORQ
Local Remote SLNP-LRQ Stop—Run—Start SLNP-SRSQ
Off—On SLNP-OFON Local—Off—Remote SLNP-LORQ
Two or Three Positions SBL-3-Q
2 Circuit
1 EFDB110-12 EFDCB110-12
2 Position,
4 Circuits
1 EFDB110-35 EFDCB110-35
3 Position,
2 Circuit
1 EFDB110-102 EFDCB110-102
3 Position,
4 Circuits
1 EFDB110-345 EFDCB110-345
Two Position Nameplates Three Position Nameplates
Description Catalog Number
Left Center Right Dead-End Feed-Thru
Diagram Catalog Number
EFDB150-12 EFDCB150-12
None
EFDB150-35 EFDCB150-35
None
EFDB150-102 EFDCB150-102
EFDB150-345 EFDCB150-345
Jog—Off—Auto SLNP-JOAQ
Malleable iron body and aluminum cover. For aluminum body add suffix —A (Suitable for Class I, Division 1 and 2, Group B—single gang only).
Custom nameplates are not available.
Shaded area indicates items suitable for Class I, Division 1 and 2, Groups B, C and D; Class II, Groups E, F and G and Class III.
For Class I, Division 1, Group B, external seals must be installed at each conduit entrance.
14
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© January 2021
EFDB Series Factory Sealed Control Stations
Selector Switch Cover Assemblies. Explosionproof, Dust-Ignitionproof
10 Amp, 600 Vac Max. for Heavy Duty Use.
NEC/CEC:
Class I, Division 1 and 2, Groups B,, C, D
Class II, Division 1 and 2, Groups E, F, G
Class III
NEMA 3, 7CD, 9EFG
EFDB Selector Switch Operator/Switch Assembly — Maintained Contact
Diagram Catalog Number
None SSBA1-2Q EFKB-12
None SSBA2-2Q EFKB-35
2 Position
Nameplate: Hand—Auto
3 Position
Nameplate: Hand—Off—Auto
Thread
Size
(In., NPSM) Description
2 Position,
1/2
1/2
1/2
1/2
2 Circuit
2 Position,
4 Circuits
3 Position,
2 Circuit
3 Position,
4 Circuit
Left Center Right
Switch Assembly
Only
SSBA1-3Q EFKB-102
SSBA2-3Q EFKB-345
Switch Assembly
with Cover
EFDB Selector Switch Operator/Switch Assembly — Modified Operations
Thread
Size
3 Position
2 Circuit
4 Circuit
(In., NPSM) Description
Momentary contact right position. Spring return to center. Maintained contact left position.
Note: Standard legend plate reads Hand/Off/Auto
3 Position,
1/2
1/2
Momentary contact left position. Spring return to center. Maintained contact right position.
Note: Standard legend plate reads Auto/Off/Hand
1/2
1/2
Momentary contact right position. Spring return to center. Maintained contact left position.
Note: Standard legend plate reads Stop/Run/Start
1/2
2 Circuit
3 Position,
4 Circuits
3 Position,
2 Circuit
3 Position,
4 Circuits
3 Position,
4 Circuits
Left Center Right
Diagram Catalog Number
Switch Assembly
Only
SSBAS-1-3 EFKB-102-SRC
SSBAS-2-3 EFKB-345-SRC
SSBASL-1-3 EFKB-102-SLC
SSBASL-2-3 EFKB-345-SLC
SSBASRA-2-3 EFKB-637-SRC
Switch Assembly
with Cover
CONTROLS: NEC/CEC EXPLOSIONPROOF CONTROL STATIONS AND SWITCHES
When installed on a single gang box the cover assembly is suitable for use in Group B environments but will not be marked Group B.
Select items suitable for Class I, Division 1 and 2, Groups B, C and D; Class II, Groups E, F and G and Class III. See product selection pages for suitable items.
Visit our website at www.emerson.com or contact us at (800) 621-1506.
© January 2021
15
EFD/EFDB and EDS Series Factory Sealed Control Stations
EFKB Covers With Pilot Lights and/or Push Buttons. For EFD Bodies
NEC/CEC:
Class I, Division 1 and 2, Groups C, D
Class II, Division 1 and 2, Groups E, F, G
Class III
Description
Cover complete with Push Button — Factory Sealed — Momentary Contact
For use on standard EFD bodies
1 Circuit Universal Start/Stop EFKB-U1
2 Circuit Universal
EFKB-U1 EFKB-U2
Cover complete with Red Mushroom Head Push Button — Factory Sealed — Maintained Contact
For use on standard EFD bodies – Emergency Stop Nameplate
1 Circuit Universal (Red) Emergency Stop EFKB-UM1
Cover complete with Pilot Lights — Factory Sealed — Momentary Contact
6 Watt, 120 Vac, Type 6S6 Lamp. For use on standard EFD bodies
One pilot light (red jewel ) and
two universal push buttons
One pilot light (red jewel ) and
J1U2 J1U1
one universal push button
Nameplate
Marking
Start/Stop EFKB-U2
Start/Stop EFKB-J1U2
Start/Stop EFKB-J1U1
Catalog
Number
J1 J2
PC
One pilot light (red jewel ) and
one universal push button–dust cap
One pilot light (red jewel
Two pilot lights (red jewels
Photocontrol relay cover (120 Vac) EFKB-PC120
Photocontrol relay cover (208-277 Vac) EFKB-PC277
)
)
Start/Stop EFKB-J1DU1
Start/Stop EFKB-J1
Start/Stop EFKB-J2
CONTROLS: NEC/CEC EXPLOSIONPROOF CONTROL STATIONS AND SWITCHES
All covers are copperfree aluminum. Supplied with four captive stainless steel bolts.
When installed on a single gang box the cover assembly is suitable for use in Group B environments but will not be marked Group B.
Colored jewels, pilot lights and LED’s listed under accessories and parts
16
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© January 2021
EFD/EFDB and EDS Series Factory Sealed Control Stations
ESK/EFK Covers For Pilot Lights, Push Buttons, or Selector Switches.
NEC/CEC:
Class I, Division 1 and 2, Groups C, D
Class II, Division 1 and 2, Groups E, F, G
Class III
Covers Only — for use on standard EFD bodies
Supplied with 4 cover bolts and blank cover nameplate.
Description Catalog Number
Push Button or Pilot Light Covers — 3/4” Tapped Openings
One opening: one push button or one pilot light ESKB-1PBQ
Two openings: two push buttons, two pilot lights, or one of each ESKB-2PBQ
ESKB-1PBQ ESKB-2PBQ
Three openings: three device (EFDL) three push buttons or three pilot lights,
or combination of push button(s) and pilot light(s)
EFKL-3HQ
EFKL-3HQ
Push Button or Selector Switch Cover — 1/2” Tapped Openings
Two openings: selector switch or two push buttons ESKB-2SPQ
Push Button, Pilot Light or Selector Switch Covers — 3/4” top and 1/2” Bottom Tapped Openings
One top and two bottom openings: one pilot light,
two push buttons; one pilot light, one selector switch.
Blank ESKB-BQ
ESKB-3JPBQ ESKB-BQ
Nameplate Mounting Bracket
Bracket with blank silver/black nameplate for EFDB series NPBRKT-EFDB
Bracket with blank silver/black nameplate for 3-device EFD series NPBRKT-CONT
To order bracket with control station, add suffix –NPBRKT to end of catalog number.
To order engraved nameplates, add desired markings after catalog number. Maximum of 2 lines with
12 characters (including spaces) per line.
Note: Mount bracket between cover screws and cover. Do not mount bracket between ground joint flame path
between cover and backbox.
CONTROLS: NEC/CEC EXPLOSIONPROOF CONTROL STATIONS AND SWITCHES
ESKB-3JPBQ
All covers are copperfree aluminum. Supplied with four captive stainless steel bolts.
Catalog number EFKL-3HQ supplied with 6 stainless steel non-captive bolts.
Visit our website at www.emerson.com or contact us at (800) 621-1506.
© January 2021
17
EFD/EFDB and EDS Series Factory Sealed Control Stations
EFD/EFDB Push Button Accessories and Parts
NEC/CEC:
Class I, Division 1 and 2, Groups B, C, D
Class II, Division 1 and 2, Groups E, F, G
Class III
Description Catalog Number
Push Button, Factory Sealed — Momentary Contact
10 Amp 600 Vac Heavy Duty 1/2” thread size (NPSM). Furnished with 1/2” to 3/4” enlarger, Weather Boot, Guard,
Start, Stop and Blank Nameplates.
SPBB-U1-Q
SPBB-U2DBL
Push Button, Red, Factory Sealed — Maintained Contact
Single Push Button Universal SPBB-U1-Q
Double Push Button Universal
10 Amp 600 Vac Heavy Duty 1/2” thread size (NPSM). Furnished with 1/2” to 3/4” enlarger and Emergency Stop
Nameplate (guard not furnished).
Single Push Button Universal SMPB-U1-Q
SPBB-U2DBL
Rectangular Button with Weather Boot
Furnished with Start, Stop and Blank Nameplates NBN-WB
Description Nameplate Marking Catalog Number
Push Button and Replacement Cap
Has 1/2 - 14 thread size (NPSM). Supplied with 1/2” to 3/4” enlarger.
Dust Cap - Push Button
DC-Q
SPBB-DU1-Q
Covers Complete with Pilot Lights, Push Buttons — Factory Sealed
When installed on a single gang box the cover assembly is suitable for use in Group B environments but will not be marked Group B.
EFKB-DU1 EFKB-DU2
Replacement Dust Cap
Only
Nameplate STOP-START-BLANK DU-NP-Q
1 Circuit Universal
2 Circuits Universal Specify EFKB-DU2
STOP-START-BLANK SPBB-DU1-Q
STOP-START-BLANK DC-Q
Specify EFKB-DU1
CONTROLS: NEC/CEC EXPLOSIONPROOF CONTROL STATIONS AND SWITCHES
For use with three device mounting bodies.
18
2 Circuits Universal and
1 Pilot Light
Specify
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EFKL-J1DU2
© January 2021
EFD/EFDB and EDS Series Factory Sealed Control Stations
EFD/EFDB Push Button Accessories and Parts
NEC/CEC:
Class I, Division 1 and 2, Groups B, C, D
Class II, Division 1 and 2, Groups E, F, G
Class III
Description Catalog Number
Nameplates for Rectangular Push Buttons
Blank SNP-B-Q Off SNP-OFF-Q
Forward SNP-FWD-Q On SNP-ON-Q
Jog SNP-JOG-Q Reverse SNP-REV-Q
Run SNP-RUN-Q Open SNP-OPEN-Q
SNP-OFF-Q
SNP-ON-Q
Stop SNP-SP-Q Close SNP-CLOSE-Q
Start SNP-ST-Q Up SNP-UP-Q
Down SNP-DOWN-Q Test SNP-TEST-Q
Fast SNP-FAST-Q Low SNP-LOW-Q
Slow SNP-SLOW-Q High SNP-HIGH-Q
Raise SNP-RAISE-Q
Lower SNP-LOWER-Q
Reset SNP-RESET-Q
Push Button Replacement Locking Guards — Glass Reinforced Polypropylene — Gasketed
Maintained Switch
Guard
Single Guard
Double Guard
Push Button Securing Rod with Chain — Stainless Steel
Mushroom Button with Weather Boot for Use with Momentary Contact — Gasketed
Mushroom Button
Has hole for 1/4” hasp.
Single Guard (Maintained Switch) SMPB-LG
Single Guard NPB-LG1
Double Guard NPB-LG2
Single Guard (No Lockout Holes) NPB-LG1-LL
Double Guard (No Lockout Holes) NPB-LG2-LL
For use with Single Guard Only NBL-SR
Black NMRB-BL
Green NMRB-GR
Red NMRB-RE
For Use with Maintained Contact — Solid-Colored Nonmetallic Button
Red NMRBM-RE
CONTROLS: NEC/CEC EXPLOSIONPROOF CONTROL STATIONS AND SWITCHES
Nameplates For Momentary and Maintained Mushroom Head Push Button
Start MNPSTQ
Stop MNPSPQ
Emergency Stop MNPESTPQ
MNPESTPQ
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© January 2021
Blank MNPBQ
19
EFD/EFDB and EDS Series Factory Sealed Control Stations
EFD/EFDB Push Button Accessories
NEC/CEC:
Class I, Division 1 and 2, Groups B, C, D
Class II, Division 1 and 2, Groups E, F, G
Class III
Description Catalog Number
Pilot Light, Factory Sealed
Incandescent
Furnished with 6S6 120 Vac incandescent lamp, jewel and guard. Has 457 mm (18”) long, type SFF-2 pigtail leads;
+150 °C (+302 °F). Body has 3/4” straight thread (NPSM).
With Red Jewel SPLSREB
With Green Jewel SPLSGRB
With Amber Jewel SPLSAMB
With Blue Jewel SPLSBLB
With Clear Jewel SPLSCLB
With Opal Jewel SPLSOPB
LED
Furnished with candelabra base 120 Vac LED, jewel and guard. Has 457 mm (18”) long, type SFF-2 pigtail leads;
+150 °C (+302 °F). Body has 3/4” straight thread (NPSM).
With Red LED, Clear Jewel SPLNSREB
With Green LED, Clear Jewel SPLNSGRB
Pilot Light Chamber Only
With Amber LED, Clear Jewel SPLNSAMB
Chamber Only
(Same as above, less jewel, guard and lamp) SPLSSCB
Pilot Light Jewel/Guard Assembly
Replacement Bulbs
EPL-B6W EPLLEDR
Transformer
CONTROLS: NEC/CEC EXPLOSIONPROOF CONTROL STATIONS AND SWITCHES
The below catalog numbers indicate an assembly of the Pilot Light Jewels and Guards.
Jewels and Guards are not available as separate items.
Amber Jewel/Guard JGBNA
Blue Jewel/Guard JGBNB
Clear Jewel/Guard JGBNC
Green Jewel/Guard JGBNG
Opal Jewel/Guard JGBNO
Red Jewel/Guard JGBNR
Clear Bulbs
Furnished with candelabra base. 6 Watt, 120 Vac, Type 6S6 EPL-B6W
LED Replacements
Furnished with candelabra base. 120 Vac, 10 mA.
Red LED EPLLEDR
Green LED EPLLEDG
Amber LED EPLLEDA
Add Suffix as listed below. Transformer clamps directly to pilot light barrel.
Only one pilot light transformer assembly per one gang body.
Primary Vac Lamp Vac Suffix
220 120 TR2
277 120 TR3
440 120 TR4
550 120 TR5
Suitable for Class I, Group B when installed in an enclosure rated for Class I, Group B.
20
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© January 2021
EFD/EFDB and EDS Series Factory Sealed Control Stations
EFD/EFDB Push Button Accessories
NEC/CEC:
Class I, Division 1 and 2, Groups B, C, D
Class II, Division 1 and 2, Groups E, F, G
Class III
Description Catalog Number
Nameplates for Pilot Light
Blank LNPBQ
Forward LNPFWDQ
Jog LNPJOGQ
Run LNPRUNQ
Stop LNPSPQ
Start LNPSTQ
Down LNPDOWNQ
Fast LNPFASTQ
LNPRUNQ
Slow LNPSLOWQ
Raise LNPRAISEQ
Lower LNPLOWERQ
Reset LNPRESETQ
Off LNPOFFQ
On LNPONQ
Reverse LNPREVQ
Close LNPCLOSEQ
Open LNPOPENQ
Up LNPUPQ
Test LNPTESTQ
Low LNPLOWQ
High LNPHIGHQ
CONTROLS: NEC/CEC EXPLOSIONPROOF CONTROL STATIONS AND SWITCHES
Visit our website at www.emerson.com or contact us at (800) 621-1506.
© January 2021
21
EFD/EFDB and EDS Series Factory Sealed Control Stations
Mounting Bodies
Furnished with Internal Ground Screw.
NEC/CEC:
Class I, Division 1 and 2, Groups C, D
Class II, Division 1 and 2, Groups E, F, G
Class III
NEMA 7CD, 9EFG
1-Gang
2-Gang
Tandem
Type
Dead-End
Feed-Thru
Dead-End
Feed-Thru
Dead-End
Feed-Thru
Hub Size
(Inches)
1/2 EFD150NLQ EFD150ANLQ
3/4 EFD175NLQ EFD175ANLQ
1 EFD110NLQ EFD110ANLQ
1/2 EFDC150NLQ EFDC150ANLQ
3/4 EFDC175NLQ EFDC175ANLQ
1 EFDC110NLQ EFDC110ANLQ
1/2 EFD250NLQ EFD250ANLQ
3/4 EFD275NLQ EFD275ANLQ
1 EFD210NLQ EFD210ANLQ
1/2 EFDC250NLQ EFDC250ANLQ
3/4 EFDC275NLQ EFDC275ANLQ
1 EFDC210NLQ EFDC210ANLQ
1/2 EFDT50NLQ —
3/4 EFDT75NLQ —
1 EFDT10NLQ —
1/2 EFDCT50NLQ —
3/4 EFDCT75NLQ —
1 EFDCT10NLQ —
Malleable Iron Aluminum
Catalog Number
3-Device
1/2 EFDL50Q —
Dead-End
Feed-Thru
Blank Bodies for Brazed Hubs
Construct complete catalog numbers per EFD Cast Device Boxes Ordering Information on following
page. Hubs will be located in center of walls and evenly spaced unless otherwise specified. Where
spacings are critical, submit sketch showing exact spacing requirements.
CONTROLS: NEC/CEC EXPLOSIONPROOF CONTROL STATIONS AND SWITCHES
1-Gang, 2-Gang, and 5-Gang bodies only.
For tandem bodies, external seals must be installed within 1.5 meters (5 feet) of each conduit entrance for Class I, Groups C and D.
Blank EFD bodies are Non-UL Listed.
1-Gang EFD1NL —
2-Gang EFD2NL —
3-Gang EFD3NL —
4-Gang EFD4NL —
5-Gang EFD5NL —
22
3/4 EFDL75Q —
1 EFDL10Q —
1/2 EFDCL50Q —
3/4 EFDCL75Q —
1 EFDCL10Q —
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© January 2021
EFD/EFDB and EDS Series Factory Sealed Control Stations
EFD Cast Device Box Ordering Information. Blank Bodies for Brazed Threaded Hubs
1-, 2-, 3-, 4- and 5-Gang Boxes. Brazed Threaded Hubs for Rigid Conduit, 1/2” thru 1”; Brazed Union Hubs, 1/2” thru 1”.
Determine catalog number as follows:
(1) Select EFD device box catalog number;
(2) Select ”Standard Hub Arrangement
Diagram” number; and
(3) Select symbols that represent hub
sizes from ”Symbol Table.” (Use ”0”
where no hub is required, and separate
the various divisions of the complete
catalog number by dashes.)
Example
The blank body device box selected is
EFD3NL and the hub arrangement is
diagram #8. Hub ”a” is to be 3/4” brazed
threaded; hub ”b”, 1” brazed threaded;
hub ”c”, 3/4” brazed threaded; hub ”d”,
no hub is required; and hub ”e”, 1” brazed
union.
The complete catalog number will be:
EFD–3NL–8–23203E
If a ”Standard Hub Arrangement” is not
suitable for the application, or when hubs
are to be more accurately spaced, submit
sketch locating hubs (1) from centerlines
of walls and (2) from outside back of box
(or from mounting lug surface if lugs are
supplied).
All hubs will be located in centerlines of
walls and evenly spaced unless
otherwise specified.
Standard Hub Arrangement Diagrams
Hub ”a” is always TOP of box
2-, 3-, 4- and 5-Gang (Front View)
CONTROLS: NEC/CEC EXPLOSIONPROOF CONTROL STATIONS AND SWITCHES
Symbol Table
Hub Size
(Inches)
Blank 0 0
1/2 1 1E
3/4 2 2E
1 3 3E
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© January 2021
Brazed
Threaded Hub
Symbol
Brazed Union
Hub Symbol
1-Gang (Front View)
23
EFD/EFDB and EDS Series Factory Sealed Control Stations
EFD/EFDB 1- and 2-Gang
NEC/CEC:
Class I, Division 1 and 2, Groups C, D
Class II, Division 1 and 2, Groups E, F, G
Class III
NEMA 7CD, 9EFG
Dimensions in Millimeters (Inches)
EFD/EFDB — 1- and 2-Gang Combination Pilot Light and Push Buttons
EFD/EFDB — 1-Gang Dust Cap Push Button and 1-Gang Maintained Contact Push Button
EDS — 1- and 2-Gang Rocker Arm Push Button
CONTROLS: NEC/CEC EXPLOSIONPROOF CONTROL STATIONS AND SWITCHES
24
Hub Size
(Inches)
1/2 and 3/4 136.7 (5.38) 155.7 (6.13) 19.8 (0.78)
1 139.7 (5.50) 160.3 (6.31) 23.9 (0.94)
A B C
Dimensions in Millimeters (Inches)
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© January 2021
EFD/EFDB and EDS Series Factory Sealed Control Stations
EFD 3-Device and 2-Gang Tandem
NEC/CEC:
Class I, Division 1 and 2, Groups C, D
Class II, Division 1 and 2, Groups E, F, G
Class III
NEMA 7CD, 9EFG
Dimensions in Millimeters (Inches)
EFD — 3-Device Pilot Light and Push Buttons
EFD — 2-Gang Tandem Pilot Light and Push Buttons
CONTROLS: NEC/CEC EXPLOSIONPROOF CONTROL STATIONS AND SWITCHES
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© January 2021
25
EFD/EFDB and EDS Series Factory Sealed Control Stations
Mounting Bracket
NEC/CEC:
Class I, Division 1 and 2, Groups C, D
Class II, Division 1 and 2, Groups E, F, G
Class III
NEMA 7CD, 9EFG
Dimensions in Millimeters (Inches)
NPBRKT Nameplate Mounting Bracket
Secure bracket under
cover screws of box.
Torque cover screws
to 35” - lbs.
CONTROLS: NEC/CEC EXPLOSIONPROOF CONTROL STATIONS AND SWITCHES
26
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© January 2021
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