Position Sensors EN Series
Environment-Sealed Limit Switches
30HoneywellSensingandControl11-800-537-6945USA1F1-815-235-6847International11-416-293-8111Canada
1EN194-S (similar in
appearance but has
screw terminals)
1EN51-6 1EN61-6 1EN75-R 1EN76-R 1EN75-R3 21EN75-R1 21EN75-2
1EN231-6
Characteristics:
O.F. – Operating Force; R.F. – Release Force;
P.T. – Pretravel; O.T. – Overtravel; D.T. – Differential Travel.
EN SPECIAL REQUIREMENTS ORDER GUIDE
Characteristics
R.F. P.T. O.T. D.T. Wgt. Repl.
Elec. O.F. min. max. min. max. max. Mtg.
Special
2
Rating
1
Catalog N N mm mm mm g Hdw.
Requirement Actuator Termination Circuitry Code Listing lbs. lbs. inches inches inches oz. Pkt.
3
High Plunger No. 20 (2)SPDT A 1EN231-6 26,7-53,4 17,8 1,02 5,84 0,51 207 3
Velocity Leadwire 6-12 4 .040 .230 .020 7.3
Actuation (MIL-W-22759/1)
Low Force Plunger No. 20 (2)SPDT A 1EN51-6 13,3-26,7 8,9 1,02 6,35 0,51 213 3
Operation Leadwire 3-6 2 .040 .250 .020 7.5
(MIL-W-5086)
Increased Plunger No. 20 (2)SPDT A 1EN61-6 26,7-53,4 17,8 1,02 12,7 0,51 227 3
Overtravel Leadwire 6-12 4 .040 .500 .020 8
(MIL-W-5086)
Increased Plunger Screw (2)SPDT A 1EN194-S 26,7-53,4 17,8 0,38-1,02 21,8 0,51 113 7
Overtravel 6-12 4 .015-.040 .860 .020 4
High Shock Plunger Bottom (2)SPDT A 1EN75-R 26,7-53,4 17,8 1,02 6,35 0,51 198 8
Receptacle 6-12 4 .040 .250 .020 7
High Shock Plunger Side (2)SPDT A 1EN76-R 26,7-53,4 17,8 1,02 6,35 0,51 227 8
Receptacle 6-12 4 .040 .250 .020 8
High Shock Plunger Bottom (2)SPDT D 1EN75-R3 26,7-53,4 17,8 1,02 6,35 0,51 198 8
Receptacle (M8805/65-001) 6-12 4 .040 .250 .020 7
High Shock Roller Bottom (2)SPDT A 21EN75-R1 26,7-53,4 17,8 1,02 6,35 0,51 204 11
Plunger Receptacle 6-12 4 .040 .250 .020 7.2
High Shock Roller No. 20 (2)SPDT A 21EN75-2 26,7-53,4 17,8 1,02 6,35 0,51 207 11
Plunger Leadwire 6-12 4 .040 .250 .020 7.3
(MIL-W-22759/7)
Notes:
1
Electrical ratings are on page 25.
2
These are just a few of the designs that have been
developed to meet special application require-
ments. If you have similar or different special re-
quirements,contactMICROSWITCHfortheright
switch to meet them.
3
See page 33 for replacement mounting hardware
packet catalog listings
N J Newtons
EXPLANATIONS OF SWITCHES WITH
SPECIAL REQUIREMENTS
High velocity actuation
This switch is designed to withstand near
‘‘hammer-blow’’ actuation as is found in
over-center locking mechanisms. It is di-
mensionally interchangeable with stan-
dard listing1EN1-6.
Low force operation
Special spring construction within this
switch reduces the normal 6 to12 pound
(26,7to 53,4N) ENoperating force to3 to
6 pounds (13,3 to 26,7 N). This switch is
also dimensionally interchangeable with
the standard size 1EN1-6. Low force 600
series ENs have 3 to 6 pounds (13,3 to
26,7 N) of operating force.
Increased overtravel
A longer plunger and bushing on the
switch extends the ENovertravel capabil-
ities from the normal .250 inch to .860
(6,35 to 21,8 mm). The longerbushing al-
so permits additional adjustment of the
plunger position.
High impact shock
Cataloglisting1EN75-R3 (M8805/65-001)
has been qualified to MIL-S-8805, includ-
ing high impact shock class H. Other
switches rated for high impact shock ap-
plications incorporate the same plunger
mechanismand internalswitchdesignas
usedinthe1EN75-R3andareexpectedto
conform to the same requirements.
Terminations of these listings are:
1EN75-R DM-9601-7P-1D
Deutch receptacle
1EN75-R3 GS02-16S-1P-003
Cannon receptacle
1EN76-R DM-9601-7P-1D
Deutch receptacle
21EN75-R1 GS02-16S-1P-003
Cannon receptacle
21EN75-2 MIL-W-22759/7
Two foot lead wire 20 gage
MICROSWITCHdoesnotfurnishmat-
ing connectors with these products.
