© Copyright 2004 Edwards
90 Fieldstone Court | Cheshire, CT 06410
Ph: 203.699.3300 | Fx: 203.699.3108
www.edwards-signals.com
6-18
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The Edwards 878EX AC & 879EX DC Series are heavy-duty, high
decibel, vibrating horn signals designed for use in hazardous loca-
tions.
Two mounting brackets are provided on either side of the unit for
wall mounting. The housing is tapped on one side for 3/4" (19mm)
conduit to allow for field wiring installation.
For use in dusty, hazardous atmospheres where a distinctive, ur-
gent signal is required for timing, scheduling, paging and general
alarm applications. Typical applications include use in mines, petro-
leum plants, gas plants, grain elevators, flour mills, paper mills, tex-
tile plants and tankers.
AdaptaHorn® Grille Type
Hazardous Location Horn
FEATURES
> Corrosion resistant heat flowed
epoxy finish
> Low current drain
AGENCY APPROVALS
> UL Listed for Class I, Division 1
and 2, Groups B, C, and D; Class
II, Division 1 and 2, Groups E, F,
and G; and Class III locations
> UL Listed for outdoor locations
> NEMA Type 4X Rated
SPECIFICATIONS
> Wide operating voltage range
-20% to +10% of nominal voltage
> Power connection wires
embedded in sealing compound
878EX & 879EX Series
Outdoor Rated, NEMA Type 4X
D-04
www.leedan.com info@leedan.com Toll-Free: 800-231-1414
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© Copyright 2004 Edwards
90 Fieldstone Court | Cheshire, CT 06410
Ph: 203.699.3300 | Fx: 203.699.3108
www.edwards-signals.com
TECHNICAL INFORMATION
6-19
Mark
mounting
holes
(2) Mounting brackets
for 3/8" (10mm) diameter
maximum fasteners
Explosion-proof conduit
outlet box (not supplied)
3/4" (19mm) conduit
(not supplied)
7 3/8"± 1/8"
(187mm ± 3mm)
2 1/4"
(57mm)
6 1/2"
(165mm)
4 3/16"
(106mm)
7 5/8"
(194mm)
3/4" (19mm)
14NPT nipple
DC coil
dB at
Cat. No.
Volts
Amps
V A
Res. (Ohms)
10 Ft.
878EX-E5
12V 50/60 Hz
1.25
15
1.45
878EX-G5
24V 50/60 Hz
0.625
15
5.2
97
878EX-N5
120V 50/60 Hz
0.13
15
150.0
878EX-R5
240V 50/60 Hz
0.065
15.6
580.0
879EX-C1
6V DC
0.70
4.2