Manual Switches
Sealed Pushbutton Switches
FEATURES
High-intensity LEDs indicate status
changes – brilliant color display can be
distinguished even under high ambient
lighting conditions
Soft-glow LED backlighted legends for
low ambient viewing
Rugged sealed construction with-
stands effects of shock and vibration –
provides dependable switching/light-
ed display in severe environment
applications
Designed to comply with MIL-S-22885
Suitable for use in NEMA 4 and 13
enclosures
Low travel (.030 in. max.), with tactile
feedback for definite feel of switching
action
EPM Series
Front-of-panel, hard mounting
Compact size
Field-replaceable legends
UL recognized, CSA certified, and MIL-
S-8805 qualified basic switches
EPM22 electronic control and EPM32
power duty switching for electrical
flexibility
Matching EPM41 indicators for uniform
panel appearance
Choice of two housing styles:
Type
C:
Standard sealed EPM hous-
ings
Type
B:
Enhanced sealed EPM hous-
ings with IR filters for vehicle lighting se-
curity, designed to MIL-STD-461 (EMI
shielding), NBC compliance per
AR70-71
EPM Series Sealed Pushbutton Switches
meet high-performance needs for rug-
ged, compact size sealed switches that
are exposed to water, oil, cleaning sol-
vents, and many industrial chemicals.
They provide long, reliable operating life
under conditions of high shock and
vibration in severe environment applica-
tions.
In addition to being built to stand up to de-
manding environments, EPM switches
adhere to good human factors principles.
The design combines low travel with high
tactile feedback and meets arctic glove
requirements. Raised barriers on the be-
zel enhance finger positioning and help
prevent inadvertent operation of two
abutting units at one push. Lighted dis-
play options provide further application
versatility.
LED ILLUMINATION
Long-life LEDs enable reliable illumina-
tion. They resist effects of shock and vi-
bration, reducing service and mainte-
nance requirements. (Unlighted versions
are also available.)
The following lighting functions can be
furnished: High-intensity display using
two LEDs to create a brilliant light signal
that can be distinguished under high am-
bient conditions, and/or a pair of LEDs
which softly backlight the legend for view-
ing under low ambient conditions.
There is a choice of red, green or yellow
LEDs. Matching indicators, which provide
lighted display only, complement the
switches to help present a uniform panel
design.
ELECTRICAL FLEXIBILITY
EPM switches can be furnished with one
or two SPDT basics. EPM22 electronic
control switches handle up to 1 amp,
EPM32 power duty switches up to 7
amps.
EASY TO INSTALL
Front panel hard-mounting is quick and
easy. Only a screwdriver is needed to
tighten the swing-out mounting lugs,
which securely lock and seal the unit in
the panel. Though the cover/bracket sim-
ply snaps onto the housing, it has inher-
ent tamper resistance. The cover can be
removed intentionally with a small screw-
driver (or other tool) to add or change leg-
ends.
EPM’s
3
⁄
4
-inch square panel cutout on 1-
inch centers is suited to row, column, or
matrix arrays.
CONSTRUCTION
Insert can be furnished with or without
legends. If legends are to be backlight-
ed, darker colors are recommended
for the insert. Black provides maximum
contrast in lighted legend displays.
Diffuser plates specified for lighted leg-
end devices are coated on the under-
side for even illumination. When un-
lighted legends are specified, diffuser
plates are molded from opaque plastic
and are not interchangeable with those
used for lighted legends.
Manuals
Honeywell Sensing and Control 1-800-537-6945 USA
1-815-235-6847 International 1-416-293-8111 Canada
75
Manual Switches
Sealed Pushbutton Switches
SPECIFICATIONS
Environmental
Operating Temperature
Storage Temperature
Seals
Protection
Mechanical
Electrical
Total Travel
Operating Force
Contact arrangement
Electrical rating
−40
to 85°C (−40 to 185°F)
−54
to 85°C (−65 to 185°C)
Viton bezel-to-panel gasket seal
and neoprene cover seal
NEMA 4 and 13
.030 in. (0,76 mm) max.
20 to 60 oz. (5,56 to 16,7 N) typical
1 or 2 SPDT
EPM Series
EPM22/24 switches – 28 VDC: .5 amp ind., 1 amp res.
(sea level or 50,000 ft.), 2 amps max. inrush.
1 amp, 125 VAC (UL code L22).
EPM32/34 switches – 28 VDC: 4 amps ind., 7 amps res.
(sea level), 2.5 amps ind., 4 amps res. (50,000 ft).
115 VAC, 60 Hz: 7 amps res. or ind. (sea level).
EPM22/32 SWITCHES WITH SINGLE INDICATOR ORDER GUIDE
EPM22B
Housing Type and
Switch Contacts
Standard Type C
Sealed Housing:
EPM22C
(Gold Contacts)
EPM32C
Silver Contacts
Enhanced Type
B
Sealed Housing, with
IR filters, EMI shielding
& NBC compliance:
EPM22B
(Gold Contacts)
EPM32B
(Silver Contacts
R
Y
G
X
Y
Legend
Color1
Red
Yellow
Green
No LED
R
Hi-Intensity
Indicator
Color
R
Y
G
X
Red
Yellow
Green
No LED
6
Switch
and LED
Terminals
2
Printed Circuit
6
Hook style
LED terminals
and solder T2
switch
terminals
AC
Circuitry
Code
AC
1-Pole
BC
2-Pole
(All are
momentary
action)
L
L
Insert Type
Legended insert.
Use Legend Order Sheet
FO-43973 to designate insert
color and legend.
X
No insert furnished.2
Unlegended insert:1
B
Blue
R
Red
Y
Yellow
G
Green
W
White
K
Black
1. When specifying Legend Color (R,
Y, G),
the insert Type suffix letter must be either:
L
(legended insert), or
X
(no insert
furnished).
2. To order insert separately, see EPM95
order guide.
Example: EPM22BYR6ACL
Enhanced Type
B
sealed housing, gold contacts; high-intensity single indicator red lighted
display and yellow legend backlighting, hook style LED terminals and solder T2 switch
terminals; 1-pole circuitry, momentary action, furnished with legended insert, as specified in
FO-43973.
76
Honeywell Sensing and Control 1-800-537-6945 USA
1-815-235-6847 International 1-416-293-8111 Canada
Manual Switches
Sealed Pushbutton Switches
EPM24B
Housing Type
and Switch
Contacts
Standard Type
C
Sealed Housing:
EPM24C
(Gold Contacts)
EPM34C
(Silver Contacts)
Enhanced Type
B
Sealed Housing,
incl. IR filters, EMI
shielding & NBC
compliance:
EPM24B
(Gold Contacts
EPM34B
(Silver Contacts)
EPM Series
Y
D
Hi-Intensity Indicator Colors
6
Switch
and LED
Terminals
2
Printed
Circuit
6
Hook style
LED
terminals
and solder
T2 switch
terminals
AC
L
Legend
Color1
R
Red
Y
Yellow
G
Green
X
No LED
Color
Code
R
Y
G
F
A
B
C
D
E
Upper
LED
Red
Yellow
Green
Red
Yellow
Yellow
Green
Green
Red
Lower
LED
Red
Yellow
Green
Green
Green
Red
Yellow
Red
Yellow
Circuitry
Code
AC
1-Pole
BC
2-Pole (All
are
momentary
action)
L
Insert Type
Legended insert.
Use Legend Order Sheet
FO-43973 to designate insert
color and legend.
X
No insert furnished.2
Unlegended Insert:1
B
Blue
R
Red
G
Green
W
White
K
Black
1. When specifying Legend Color (R,
Y, G),
the insert Type suffix letter must be either:
L
(legended insert), or
X
(no insert
furnished).
2. To order insert separately, see EPM97
order guide.
Example: EPM24BYD6ACL
Enhanced Type
B
sealed housing, gold contacts; yellow legend backlighting; high-intensity
dual indicator green/red lighted display; hook style LED terminals and solder T2 switch
terminals; 1-pole momentary action, furnished with legended insert, as specified in FO-43973.
EPM41B
Housing Type and
Switch Contacts
Standard Type C
Sealed Housing:
EPM41C
Enhanced Type
B
Sealed Housing with
IR filters, EMI
shielding & NBC
compliance:
EPM41B
Y
Legend Color1
R
Red
Y
Yellow
G
Green
X
No LED
R
Hi-Intensity
Indicator Color
R
Red
Y
Yellow
G
Green
X
No LED
2
LED Terminals
2
Printed Circuit
6
Hook style
L
L
Insert Type
Legended insert.
Use Legend Order Sheet FO-43973 to
designate insert color and legend.
X
No insert furnished.2
Unlegended Insert:1
B
Blue
R
Red
Y
Yellow
G
Green
W
White
B
Black
Example: EPM41BYR2L
Enhanced Type
B
sealed housing; high-intensity single indicator red lighted display and yellow
legend backlighting, printed circuit LED and switch terminals; furnished with legended insert,
as specified in FO-43973.
1. When specifying Legend Color (R,
Y, G),
the insert Type suffix letter must be either:
L
(legended insert), or
X
(no insert
furnished).
2. To order insert separately, see EPM95
order guide.
Manuals
Honeywell Sensing and Control 1-800-537-6945 USA
1-815-235-6847 International 1-416-293-8111 Canada
77
Manual Switches
Sealed Pushbutton Switches
EPM44 DUAL INDICATORS (NO SWITCHES) ORDER GUIDE
EPM Series
EPM44B
Housing Type and
Switch Contacts
Standard Type
C
Sealed Housing:
EPM44C
Enhanced Type
B
Sealed Housing, incl.
IR filters, EMI
shielding & NBC
compliance:
EPM44B
Y
Legend
Color1
R
Red
Y
Yellow
G
Green
X
No LED
Color
Code
R
Y
G
F
A
B
C
D
E
D
Hi-Intensity Dual Indicator Colors
Upper
LED
Red
Yellow
Green
Red
Yellow
Yellow
Green
Green
Red
Lower
LED
Red
Yellow
Green
Green
Green
Red
Yellow
Red
Yellow
2
LED
Terminals
2
Printed
Circuit
6
Hook style
L
Legend Insert Type
L
Legended insert.
Use Legend Order Sheet
FO-43973 to designate
insert color and legend.
X
No insert furnished.2
Unlegended Insert:1
B
Blue
R
Red
G
Green
W
White
K
Black
1. When specifying Legend Color (R,
Y, G),
the insert Type suffix letter must be either:
L
(legended insert), or
X
(no insert
furnished).
2. To order insert separately, see EPM97
order guide.
Example: EPM44BYD2L
Enhanced Type
B
sealed housing; yellow legend backlighting; high-intensity dual indicator
green/red display; printed circuit LED and switch terminals; furnished with legended insert, as
specified in FO-43973.
HOW TO ORDER INSERTS SEPARATELY
Legended inserts:
To order inserts legended by MICRO SWITCH as separate
items, order Catalog Listing EPM94, and use Legend Order Sheet to specify the
insert color and desired legend.
Unlegended inserts:
Use order guide below to
order inserts without legends.
EPM95 UNLEGENDED INSERTS ORDER GUIDE
Unlegended inserts can be furnished with or without a display window for hi-
intensity LED lighting.
Inserts for Type
B
Housings:
Color
Blue
Green
Red
White
Yellow
Black
Gray
With window
EPM95BBW
EPM95BGW
EPM95BRW
EPM95BWW
EPM95BYW
EPM95BKW
EPM95BPW
Without window
EPM95BBN
EPM95BGN
EPM95BRN
EPM95BWN
EPM95BYN
EPM95BKN
EPM95BPN
Inserts For Type
C
Housings:
With window
EPM95CBW
EPM95CGW
EPM95CRW
EPM95CWW
EPM95CYW
EPM95CKW
EPM95CPW
Without window
EPM95CBN
EPM95CGN
EPM95CRN
EPM95CWN
EPM95CYN
EPM95CKN
EPM95CPN
EPM97 INSERTS FOR DUAL INDICATOR DEVICES
Inserts for Type
B
Housings:
Color
Blue
Green
Red
White
Yellow
Black
Gray
With window
EPM97BBW
EPM97BGW
EPM97BRW
EPM97BWW
EPM97BYW
EPM97BKW
EPM97BPW
Without window
EPM97BBN
EPM97BGN
EPM97BRN
EPM97BWN
EPM97BYN
EPM97BKN
EPM97BPN
Inserts For Type
C
Housings:
With window
EPM97CBW
EPM97CGW
EPM97CRW
EPM97CWW
EPM97CYW
EPM97CKW
EPM97CPW
Without window
EPM97CBN
EPM97CGN
EPM97CRN
EPM97CWN
EPM97CYN
EPM97CKN
EPM97CPN
78
Honeywell Sensing and Control 1-800-537-6945 USA
1-815-235-6847 International 1-416-293-8111 Canada
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