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Sensing and Control
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Sensing and Control
Honeywell Inc.
11 West Spring Street
Freeport, IL 61032
www.honeywell.com/sensing
Position Sensors
Environment-Sealed Limit Switches
EN Series
FEATURES
Environment-proof seal per Symbol 4,
MIL-S-8805
Qualified to MIL-S-8805
Standard temperature range: –65°F to
+185°F
(–54°C to
+85°C)
High temperature range listings: –65°F
to
+257°F
(–54°C to
+125°C)
Meets or exceeds mechanical and
electrical life as defined in MIL-S-8805
1EN1-6
ELECTRICAL SPECIFICATIONS
The electrical ratings charted below are referenced in the order guides. Refer to appro-
priate MIL specification for ratings applicable to specific switches.
DC RATINGS (Amps)
Rating
2
Code
A
B
C
D
E
F
1
CIRCUITRY
Sea Level
50,000 Feet
Ind.
2
3
10
3
.5
4
24
N/A
4
3
Voltage
28 VDC
28 VDC
28 VDC
28 VDC
28 VDC
28 VDC
Inrush Motor
24
36
30
24
N/A
24
4
4
6
5
4
Res.
4
10
15
5
1
7
Inrush Motor
24
36
30
4
3
6
3
Res.
4
1
10
15
Ind.
2
3
10
.5
Two Single-Pole
Double-Throw
Circuits
5
3
N/A
1
7
Position Sensors
2.5
Four Single-Pole
Double-Throw
Circuits
Notes:
5 amps for rotary switches
2
For other electrical data, contact your nearest MICRO SWITCH Sales Office. MIL-S-8805 ratings apply when
this specification is invoked.
3
Application information only.
AC RATINGS (Amps)
Sea Level
Rating
Code
A&D
B
Motor
Voltage
125/460 VAC @ 60 Hz
125 VAC @ 400 Hz
125/250 VAC @ 60 Hz
460 VAC @ 60 Hz
125 VAC @ 400 Hz
C
125/250 VAC @ 60 Hz
460 VAC @ 60 Hz
125 VAC @ 400 Hz
F
125/460 VAC @ 60 Hz
125 VAC @ 400 Hz
Make
24
24
20
20
36
20
20
30
12
24
Break
4
4
3
3
6
3
3
5
2
4
Res.
5
5
5
3
10
5
3
10
2
5
Ind.
3
5
5
3
6
5
3
6
2
5
Four Circuit
Double Break
Two Circuit
Double Break
Honeywell Sensing and Control 1-800-537-6945 USA
1-815-235-6847 International 1-416-293-8111 Canada
25
Position Sensors
Environment-Sealed Limit Switches
TERMINATION
Termination is specified in the order
guides. Leadwires are generally six feet
long, and of the gage and Military Specifi-
cations noted in the order guides.
MOUNTING
Plunger actuator switches mount through
5
⁄
8
inch or
15
⁄
32
inch diameter holes. Lock
washer, keyed washer, and wire lock hex-
agon mounting nuts lock the switches in
their mounting holes.
Rotary actuator switches mount through
15/32 inch diameter holes. A lock washer
wire lock hexagon nut and locating pins
on the top of the housing prevent switch
rotation.
OPERATION
Plunger Actuators
For in-line actuation. An ice scraper ring
cleans the actuator with each operation.
Roller Plunger Actuators
For cam and slide actuation not to exceed
20° rise. Roller adjusts laterally in 45° in-
crements. An ice scraper ring cleans the
actuator with each operation.
EN Series
Rotary Roller Lever Actuator
For cam and slide actuation with more
than a 30° rise. A spring returned mecha-
nism, this actuator is available in clock-
wise and counterclockwise operation de-
signs. The actuator adjusts laterally to
any position through 360°. The roller is
laminated phenolic.
Ball Bearing Plunger Actuator
For random direction operation. An ice
scraper ring cleans the actuator with each
operation. For further information, con-
tact your nearest MICRO SWITCH Sales
Office.
Rotary Linkage Lever Actuator
A threaded rod attaches to the rotary lever
for positive actuation. The rotary lever op-
erates in either direction and adjusts lat-
erally to any position through 360°. The
threaded rod pivots in two planes. The ac-
tuator has no spring return, but is con-
trolled directly by the movement of the ac-
tuating device.
DIMENSIONS SHOWN ARE FOR
REFERENCE ONLY
26
Honeywell Sensing and Control 1-800-537-6945 USA
1-815-235-6847 International 1-416-293-8111 Canada
Position Sensors
Environment-Sealed Limit Switches
MIL-S-8805 PERFORMANCE APPROVED SWITCHES
EN Standard Size Switches
Terminal
Strength
Newtons
lbs.
66,7
15
Strength of Strength of
Actuating
Mounting
Means
Bushing
Newtons
Nm
lbs.
in. lbs.
133
30
1,7
15
EN Series
Catalog
Listing
1EN1-6
2EN1-6
3EN1-6
4EN1-6
31EN11-6
31EN1-6
32EN11-6
32EN1-6
33EN11-6
33EN1-6
34EN11-6
34EN1-6
41EN1-6
42EN1-6
43EN1-6
44EN1-6
Procurement
Part No.
MS24331-1
MS24331-2
MS24331-3
MS24331-4
MS21320-1
MS21320-2
MS21320-3
MS21320-4
MS21320-5
MS21320-6
MS21320-7
MS21320-8
MS24420-1
MS24420-2
MS24420-3
MS24420-4
Vibration
Shock
Moisture
Resistance
Salt
Spray
Explosion
Acceler-
ation
N/A
Seal
Resilient
(Symbol 4)
Applicable
test
10-58 Hz
100gs Applicable Applicable Applicable
at .060 in. (1,52mm) .006 sec.
test
test
test
Double Amplitude
pulse
58-500 Hz
sawtooth
at 10gs
10-58 Hz
100gs Applicable Applicable Applicable
at .060 in. (1,52mm) .006 sec.
test
test
test
Double Amplitude
pulse
sawtooth
58-500 Hz
at 10gs
66,7
15
44,5
10
1,7
15
N/A
Applicable
test
66,7
15
—
1,7
15
10-58 Hz
100gs Applicable Applicable Applicable
at .060 in. (1,52mm) .006 sec.
test
test
test
Double Amplitude
pulse
sawtooth
58-500 Hz
at 10gs
10-70 Hz
High
Applicable Applicable Applicable
at .060 in. (1,52mm) impact
test
test
test
Double Amplitude type ‘‘H’’
70-2000 Hz
at 15gs
N/A
Applicable
test
1EN75-R3
M8805/65-001
—
44,5
10
1,7
15
20g
Applicable
test
1EN1-6
1EN1-S
1EN42-R
Characteristics: O.F. – Operating Force; R.F. – Release Force; P.T. – Pretravel; O.T. –
Overtravel; D.T. – Differential Travel.
Housing
Dimensions
2
Position Sensors
EN STANDARD SIZE SWITCHES ORDER GUIDE
Characteristics
Elec.
Rating
1
Code
A
O.F.
N
lbs.
26,7-53,4
6-12
26,7-53,4
6-12
26,7-53,4
6-12
26,7-53,4
6-12
Circuitry
Actuator
Plunger
Termination
No. 20
Leadwire
MIL-W-22759/7
as above
Catalog
Listing
1EN1-6
(MS24331-1)
(8805/40)
2001EN1-6
R.F.
P
.T.
O.T.
D.T.
Wgt. Repl.
min. max.
min.
max. Height Dia. max. Mtg.
N
mm
mm
mm
mm
mm
g
Hdw.
lbs. inches inches inches inches inches oz. Pkt.
6
17,8
4
17,8
4
17,8
4
17,8
4
1,02
.040
1,02
.040
1,02
.040
1,02
.040
6,35
.250
6,35
.250
6,35
.250
6,35
.250
6
0.51
.020
0.51
.020
0,51
.020
0.51
.020
24,9
.980
24,9
.980
38,2
1.505
26,9
1.06
25,4
1.0
25,4
1.0
25,4
1.0
58,4
3
2.3
207
7.3
207
7.3
99
3.5
221
7.8
1
Ball
Bearing
Plunger
Plunger
Two
Single-Pole
Double-Throw
Circuits
1
A
1
Screw
4
Side
5
Receptacle
A
A
1EN1-S
1EN42-R
3
3
Plunger
Notes:
Electrical ratings are on page 25.
2
Combine housing diameter and height with actuator
on page 26 for overall size.
3
Maximum length rather than housing diameter.
4
5
This listing has 4-48 NF
×
.175 inch round head
screws with lockwashers. Terminals are well isolat-
ed by phenolic barriers and epoxy casting resin.
These listings have pin receptacles (mating connec-
tors should be ordered from a local supplier).
See page 33 for replacement mounting hardware
packet catalog listings.
N Newtons
Honeywell Sensing and Control 1-800-537-6945 USA
1-815-235-6847 International 1-416-293-8111 Canada
27
Position Sensors
Environment-Sealed Limit Switches
EN Series
1EN43-R
2EN1-6
41EN1-6
21EN9-6
22EN9-6
42EN1-6
31EN1-6
32EN1-6
EN STANDARD SIZE SWITCHES ORDER GUIDE
Characteristics:
O.F. — Operating Force; R.F. — Release Force;
P — Pretravel; O.T. — Overtravel; D.T. — Differential Travel.
.T.
Housing
Dimensions
2
O.T.
min.
mm
inches
6,35
.250
6,35
.250
6,35
.250
6,35
.250
D.T.
max.
mm
inches
0,51
.020
0,89
.035
0,51
.020
0,76
.030
Height
Dia.
mm
mm
inches inches
53,3
2.1
38,1
1.5
24,9
.980
38,1
1.5
53,6
13
32
4
max.
2.11
25,4
1.0
38,1
1.5
25,4
1.0
38,1
1.5
25,4
1.0
Wgt. Repl.
max. Mtg.
g
Hdw.
oz. Pkt.
4
204
7.2
156
5.5
252
8.9
38,3
13.5
269
9.5
3
1
Characteristics
Elec.
Rating
1
Code
A
B
O.F.
N
lbs.
26,7-53,4
6-12
26,7-53,4
6-12
26,7-53,4
6-12
26,7-53,4
6-12
R.F.
min.
N
lbs.
17,8
4
22,8
5
17,8
4
22,2
5
P.T.
max.
mm
inches
1,02
.040
1,27
.050
1,02
.040
1,02
.040
Circuitry
Actuator
Plunger
Plunger
Termination
Bottom
3
Receptacle
No. 18
Leadwire
MIL-W-22759/7
No. 20
Leadwire
(MIL-W-22759/7)
No. 18
Leadwire
(MIL-W-22759/7)
No. 20
Leadwire
MIL-W-22759/7
Catalog
Listing
1EN43-R
2EN1-6
(MS24331-2)
(8805/40)
21EN9-6
Two
Single-Pole
Double-Throw
Circuits
Roller
Plunger
Roller
Plunger
Rotary
Roller
Lever
A
4
B
22EN9-6
4
A
31EN11-6 (CW) 1,4-2,8 Nm 1,0 Nm
(MS21320-1)
max.
(8805/48)
12-25 in. lb. 9 in. lb.
31EN1-6 (CCW)
(MS21320-2)
32EN11-6 (CW) 1,4-2,8 Nm 1,0 Nm
(MS21320-3)
max.
(8805/48)
12-25 in. lb. 9 in. lb.
32EN1-6 (CCW)
(MS21320-4)
(8805/48)
41EN1-6
(MS24420-1)
42EN1-6
(MS24420-2)
(8805/49)
3
5
5
Rotary
Roller
Lever
No. 18
Leadwire
MIL-W-22759/7
B
68,6
20
25
6
max.
2.7
38,1
1.5
368
13
5
5
Rotary
Linkage
Lever
Rotary
Linkage
Lever
1
No. 20
Leadwire
MIL-W-22759/7
No. 18
Leadwire
MIL-W-22759/7
A
0,34 Nm
max.
3 in. lb.
0,57 Nm
max.
5 in. lb.
25,4
—
—
—
12
max.
12
max.
1
42,2
—
—
—
1.66
25,4
1.0
38,1
1.5
213
7.5
220
7.75
5
B
5
Notes:
Electrical ratings are on page 25.
2
Combine housing diameter and height with actuator
on page 26 for overall size.
These listings have pin receptacles (mating connec-
tors should be ordered from a local supplier).
4
See page 33 for replacement mounting hardware
packet catalog listings.
N Newtons
28
Honeywell Sensing and Control 1-800-537-6945 USA
1-815-235-6847 International 1-416-293-8111 Canada
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