Page 4 Rev. D 10/30/2000 300880-4 EGS Electrical Group • 800-621-1506 • www.appletonelec.com
300880-4
INSTRUCTION SHEET
U.S. Patent No. 3,735,078
DBR Receptacles with Disconnect Switch:
30, 60, and 100 Amp.; Dust-lgnition-Proof.
Weatherproof Spring Cover, 600V A.C. Max.
Grounding thru Extra Pole and Shell
Class II, Div. 1 and 2
Groups F*, G
Class III
NEMA 3, 3R, 4X, 9F*G
DBR Enclosure has O-Ring
Gasket for Dust-Tight,
Rain-Tight Fit.
I. TO DISASSEMBLE RECEPTACLE INTERIOR
1. Remove polarizing screw and washer.
2. Rotate terminal holder counter-clockwise.
II. TO CONNECT CONDUCTORS TO RECEPTACLE
INTERIOR
1. Strip insulation from ends of individual conductors.
2. Loosen screws in pressure connectors and slide
prepared ends of conductors into the connectors,
observing proper polarity. Tighten screws.
III. TO REASSEMBLE RECEPTACLE INTERIOR
1.Insert Terminal Holder and turn clockwise until front end
is approximately 1/4” inside of casting surface.
Recessed radial depression in Terminal Holder must
be lined up with polarizing washer/locator. Replace
screw through the ground strip.
IV. POLARITY AND PHASE ROTATION
1. ACP CPH Plugs and EBRH Receptacle are polarized
so that the plug will enter the receptacle only one way.
2. Special Polarization: suffix – P4 added to catalog
number of the receptacle. Prevents plug insertion in a
receptacle wired for a different voltage.
V. Wiring
1. Conductors rom Receptacles are connected to the
Disconnect Switch as shown.
TERMINAL
HOLDER
Solderless lugs are provided for line connections and receptacle is prewired to the
load side of disconnect switch. Cover-mounted components leave entire enclosure
space free for pulling of line conductors and wiring.
POLARIZED SCREW
AND WASHER
PRESSURE
CONNECTORS
SCREW
DBR
1-1/2” threaded conduit
openings- one in top
and two in bottom
Plug is mechanically locked in receptacle when
switch is ON. Design provides interlocked connect
and disconnect operation.
Switch operating handle can be padlocked in
either “ON” or “OFF” position.
Dimensions of DBR Receptacles
CONDUIT OPENINGS
TAPPED 1-1/2”
C/L OF
CONDUIT OPENINGS
2.75”
7.0 CM
30 Amp 60 Amp 100 Amp 30 Amp 60 Amp 100 Amp
A 14.81" 14.81" 15.25" B 15.5" 17.06" 17.75"
(37.6cm) (37.6cm) (38.72cm) (39.4cm) (43.3cm) (45.1cm)
MOUNTING HOLES
FOR 3/8” DIA. BOLTS
1 1/2 - 11 1/2 NPT
TOP VIEW CONDUIT OPENING
BOTTOM VIEW
CONDUIT OPENING
1.75”
45 CM
3/4 - 14
NPT
3/4 - 14
NPT
TWO
THREADED
1 1/2 CONDUIT
OPENINGS
IN BOTTOM
3.00”
7.6 CM
A
C/L OF
CONDUIT OPENINGS
7.44”
18.9 CM
9.06”
23 CM
3.0”
76 CM
14.06”
35.7 CM
B
16.69”
42.4 CM
15.13”
38.4 CM
2.63”
6.7 CM
3.81”
9.7 CM
2.00”
5.1 CM
4.50”
11.4 CM
9.00”
22.9 CM
2.63”
8.7 CM
2.00”
5.1 CM
3.81”
9.7 CM
Dimensions Of Plugs in Inches
ACP Plugs for DBR Receptacles
No. Poles A B C D
30 Amp 2, 3, 4 6.00 4.75 3.13 1.86
60 Amp 2, 3 7 81 4.94 3.50 2.23
60 Amp 4 7.81 4.94 3.81 2.55
100 Amp 2, 3 10.50 6.63 4.00 2.47
100 Amp 4 10.50 6.63 4.25 2.72
CPH Plugs for DBR Receptacles
Max.
Amps. Wire/Pole A B C D E
30 2W, 3P; 3W, 4P 6.13 2.38 1.86 1.81 4.44
60 2W, 3P 8.44 3.06 2.23 3.31 5.69
60 3W, 4P 8.44 3.06 2.55 3.31 5.69
C
D
A
B
D C
B
E
A
CPH 30 Amp. Plug
CPH 60 Amp. Plug
CAUTION: To prevent Ignition
of hazardous atmospheres
do not use in Class II Group
F locations that contain elec-
trically conductive dusts.
Most coal dusts are not elec-
trically conductive.
EGS Electrical Group • 800-621-1506 • www.appletonelec.com Rev. D 10/30/2000 300880-4 Page 1
EGS Electrical Group • 800-621-1506 • www.appletonelec.com Rev. D 10/30/2000 300880-4 Page 3
Page 2 Rev. D 10/30/2000 300880-4 EGS Electrical Group • 800-621-1506 • www.appletonelec.com
ACP Plugs for EBR, EBRH and DBR Receptacles
Cable Dia., 30 Amp 60 Amp 100 Amp
Inches 2W, 3P 3W, 4P 2W, 3P 3W, 4P 2W, 3P 3W, 4P
.390 to 1.375 ACP3023BC ACP3034BC ACP6023BC ACP6034BC --------- ---------
.875 to 1.906 --------- --------- --------- --------- ACP1023CD ACP1034CD
CPH Plugs for EBR, EBRH and DBR Receptacles
Cable Dia., 30 Amp 60 Amp
Inches 2W, 3P 3W, 4P 2W, 3P 3W, 4P
.500 to .875 CPH3023B CPH3034B --------- ---------
.390 to 1.375 --------- --------- CPH6023BC CPH6034BC
ACP PLUG
CPH PLUG
2 WIRE - 3 POLE
GREEN WIRE
GROUNDING
STRIP
HALF MOON
CONFIGURATION
GREEN WIRE
GROUNDING
STRIP
3 WIRE - 4 POLE
GREEN WIRE
GROUNDING
STRIP
HALF MOON
CONFIGURATION
GREEN WIRE
GROUNDING
STRIP
1
1
2
2
3
CONTACT
SET SCREW
CONTACT
BLOCK
GROUNDING
STRAP
CONDUCTOR INSULATION
BELOW THIS SURFACE
DBR Receptacles with Disconnect Switch:
30, 60, and 100 Amp.; Dust-lgnition-Proof.
Weatherproof Spring Cover, 600V A.C. Max.
Grounding thru Extra Pole and Shell
Class II, Div. 1 and 2,
Groups F*, G
Class II
NEMA 3, 3R, 4X, 9F*G
Field Wiring Instructions To Connect Field Wiring conductors
1. Remove pressure wire connector buss bar of switch by
loosening and removing retaining screw.
2. Attach pressure wire connector to end of line conductor.
Wire must be flash with end of connector.
3. Reposition terminal under buss bar.
4. Reinsert and tighten retaining screw.
Disconnect switch is mounted within
hinged removable cover.
MOUNTING
PLATE
SPACERS
DISCONNECT
SWITCH
TWO MOUNTING
SCREWS
FRONT VIEW
Disconnect switch is to be mounted (with the front of the disconnect switch facing the
inside of the cover) by means of two screws through the back of the disconnect switch,
through the spacers and into the mounting plate which are then fastened onto the inside
of the cover.
* Do not use where electronically conductive dusts are present (most coal dusts are not
electrically conductive). Per NEC 502-1, there are only Div. 1 locations where electronical-
ly conductive dusts are present.
DBR Plugs Receptacles
Appleton ACP Plugs are
mechanically and elec-
tronically interchangeable
with Crouse-Hinds APJ
plugs as listed at right.
ACP Plug Equivalents
Cable Diameter, Wire/ Catalog Number
Inches Pole Crouse-Hinds Appleton
30 Amp Plugs
.390 to 1.375 2W, 3P APJ3385 ACP3023BC
.390 to 1.375 3W, 4P APJ3485 ACP3034BC
60 Amp Plug.
390 to 1.375 2W, 3P APJ6385 ACP6023BC
.390 to 1.375 3W, 4P APJ6485 ACP6034BC
100 Amp Plug
.875 to 1.906 2W, 3P APJ10387 ACP1023CD
.875 to 1.906 3W, 4P APJ10487 ACP1034CD
V. WIRING
1. Conductors from Receptacles are connected to the Disconnect Switch as shown.
Note:
Receptacles with the P4 suffix have the interior rotated 22 1/2˚ for special polarization applications.
They are compatible only with the Appleton plugs with the P4 option, or Crouse-Hinds plugs with the S4 option.
DBR Enclosure has O-Ring Gasket
for Dust-Tight, Rain-Tight Fit.
Disconnect Switch Mounting
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