Limit and Enclosed Switches
EX Series
Explosion-Proof Switches
FEATURES
ɀ NEMA 1, 7 and 9
Single-Conduit
Connect Switch*
ɀ Compact, rugged housing
ɀ Up to 20 amp capacity
ɀ Ample wiring space
ɀ Mounts from 4 sides
ɀ Roller arms adjustable through 360°
ɀ Non-sparking actuators
ɀ Captive cover screws
ɀ UL Listed, file #E14274
ɀ CSA Certified, file #LR57324
ɀ Grounding screw
NEMA
NEMA standards: 1, 7 and 9.
UL listed and CSA certified: Class I, Div. 1,
Groups B, C and D (Group B - only as noted
in order guides); and Class II, Div.1, Groups
E, F and G.
* See page A124 for double conduit connect switches.
EX switches feature the smallest UL-listed opening is located in one end of one group
housings available for use in hazardous lo- of EX listings (pages A122-A123); while a
cations. Flame paths within the housing second group (page A124) has a conduit
cool exploding gases below the kindling opening in each end of the switch.
temperaturebeforetheyreachtheexplosive
gases surrounding the housing.
Also refer to NEMA application note in the
Reference Standards section at the rear of
this catalog.
These switches are not sealed against liq-
TEMPERATURE RANGE
uids and are not intended to be subjected to
EX switches are for use in a temperature
range of –40 to 160°F (–40 to 71°C). For
applications outside these limits, please call
the 800 number.
Theenclosedswitchingunit, whichisheldin liquid splash or for outdoor applications. If a
place by screws, is accessible when the sealed explosion-proof switch is required,
cover plate is removed. A tapped conduit refer to the type CX and LSX.
ELECTRICAL RATINGS
ACTUATORS
Circuitry
Electrical Ratings
Roller arm versions are designed for cam or
slide operation. Listings include clockwise
and counterclockwise actuation. Levers are
adjustable through 360°. The roller is non-
sparking material.
A
B
C
UL/CSA Rating:
15 amps, 125, 250 or 480 VAC;
1⁄8 Hp, 125 VAC; 1⁄4 Hp, 250 VAC;
1⁄2 amp, 125 VDC; 1⁄4 amp, 250 VDC.
Single-Pole
Double-Throw
The cross-roller arm switch is for use where
the operating mechanism approaches from
a direction perpendicular to the longitudinal
axis of the switch.
UL/CSA Rating:
20 amps, 125, 250 or 480 VAC;
10 amps, 125 VAC ‘‘L’’;
1 Hp, 125 VAC; 2 Hp, 250 VAC;
The overtravel plunger has a case harden-
ed, radius tipped, push-rod plunger guided
by a sturdy bushing.
Single-Pole
Double-Throw
1⁄2 amp, 125 VDC; 1⁄4 amp, 250 VDC.
UL/CSA Rating:
10 amps, 125 or 250 VAC;
0.3 amp, 125 VDC; 0.15 amp, 250 VDC.
The manually operated switch has a large
paddle-shaped actuator.
Double-Pole
Double-Throw
REPLACEMENT PARTS
Available replacement parts are listed on
page A125. An installation sheet packed
with each switch describes these parts in
detail and explains how they are installed.
D
E
UL/CSA Rating:
10 amps, 125, 250 or 480 VAC;
1⁄2 amp, 125 VDC; 1⁄4 amp, 250 VDC.
Single-Pole
Double-Throw
UL Rating:
1 amp, 125 VAC.
Single-Pole
Double-Throw
Honeywell ɀ Sensing and Control ɀ1-800-537-6945 USA ɀ ⍣1-815-235-6847 International ɀ1-800-737-3360 Canada
A121
