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Sensing and Control
Honeywell Inc.
11 West Spring Street
Freeport, IL 61032 www.honeywell.com/sensing
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Limit and Enclosed Switches EX Series
Explosion-Proof Switches
Honeywell1 Sensing and Control11-800-537-6945 USA1F1-815-235-6847 International11-800-737-3360 CanadaA121
Single-Conduit
Connect Switch*
* See page A124 for double conduit connect switches.
EX switches feature the smallest UL-listed
housings available for use in hazardous lo-
cations. Flame paths within the housing
cool exploding gases below the kindling
temperature before they reach the explosive
gases surrounding the housing.
The enclosed switching unit, which is held in
place by screws, is accessible when the
cover plate is removed. A tapped conduit
opening is located in one end of one group
of EX listings (pages A122-A123); while a
second group (page A124) has a conduit
opening in each end of the switch.
These switches are not sealed against liq-
uids and are not intended to be subjected to
liquid splash or for outdoor applications. If a
sealed explosion-proof switch is required,
refer to the type CX and LSX.
ELECTRICAL RATINGS
Circuitry Electrical Ratings
A UL/CSA Rating:
15 amps, 125, 250 or 480 VAC;
1⁄8Hp, 125 VAC; 1⁄4Hp, 250 VAC;
1⁄2amp, 125 VDC; 1⁄4amp, 250 VDC.
Single-Pole
Double-Throw
B UL/CSA Rating:
20 amps, 125, 250 or 480 VAC;
10 amps, 125 VAC ‘‘L’’;
1 Hp, 125 VAC; 2 Hp, 250 VAC;
Single-Pole 1⁄2amp, 125 VDC; 1⁄4amp, 250 VDC.
Double-Throw
C UL/CSA Rating:
10 amps, 125 or 250 VAC;
0.3 amp, 125 VDC; 0.15 amp, 250 VDC.
Double-Pole
Double-Throw
D UL/CSA Rating:
10 amps, 125, 250 or 480 VAC;
1⁄2amp, 125 VDC; 1⁄4amp, 250 VDC.
Single-Pole
Double-Throw
E UL Rating:
1 amp, 125 VAC.
Single-Pole
Double-Throw
FEATURES
1NEMA 1, 7 and 9
1Compact, rugged housing
1Up to 20 amp capacity
1Ample wiring space
1Mounts from 4 sides
1Roller arms adjustable through 360°
1Non-sparking actuators
1Captive cover screws
1UL Listed, file #E14274
1CSA Certified, file #LR57324
1Grounding 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.
Also refer to NEMA application note in the
Reference Standards section at the rear of
this catalog.
TEMPERATURE RANGE
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.
ACTUATORS
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.
The cross-roller arm switch is for use where
the operating mechanism approaches from
a direction perpendicular to the longitudinal
axis of the switch.
The overtravel plunger has a case harden-
ed, radius tipped, push-rod plunger guided
by a sturdy bushing.
The manually operated switch has a large
paddle-shaped actuator.
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.
Limit/ Enclosed
Limit and Enclosed Switches EX Series
Explosion-Proof Switches
A122Honeywell1Sensing and Control11-800-537-6945 USA1F1-815-235-6847 International11-800-737-3360 Canada
ROLLER LEVER ACTUATED
SWITCHES
AUXILIARY ACTUATORS
Order rotary actuators for the EX-AR20 from
the selection shown below.
Roller Lever
6PA5-EX
(Bronze roller)
6PA127-EX
(Nylon roller)
Cross Roller Lever
6PA131-EX
(Bronze roller)
One-Way Roller Lever
For CW
actuation:
6PA130-EX
(Bronze roller)
For CCW
actuation:
6PA142-EX
(Bronze roller)
Adjustable Length
Roller Lever
6PA138-EX
(Nylon roller)
Rod Lever
6PA136-EX
(Aluminum rod)
ORDER GUIDE
P.T. D.T.
Elec. max. max.
Rating Catalog mm O.T. mm
Description Pg. A121 Listing O.F. in. max. in.
CW actuation*. 15 amp. SPDT. A EX-AR 2,22-5,56 N
.5-1.25 lb.
5,56
.219
(8°)
90°0,18
.007
(0.25°)
CW actuation*. 20 amp. SPDT. B EXA-AR 3,34-8,90 N
.75-2 lb.
5.56
.219
25°0,3
.012
(4°)
CCW actuation*. 15 amp. SPDT. A EX-AR30 11,1 N
2.5 lb. max.
2,65
.065
25°0,18
.007
(0.25°)
CW or CCW actuation*. 15 amp.
Low O.F. (no return spring).
Without mtg. bracket. SPDT.
AEX-AR16 0,56 N
2 oz. max.
—— —
Also UL
listed
and
CSA
certified
for
Class I
Group B
(hydrogen)
atmos-
pheres.
CW actuation*.
15 amp. SPDT.
AEX-AR800 2,22-5,56 N
.5-1.25 lb.
5,56
.219
90°0,18
.007
(0.25°)
CCW actuation*.
15 amp. SPDT.
A EX-AR830 11,1 N
2.5 lb. max.
1,65
.065
25°0,18
.007
(0.25°)
CW actuation*.
10 amp. DPDT.
CEXD-AR-3† 2,22-6,67 N
.5-1.5 lb.
6,35
.250
25°2,77
.109
(4°)
CCW actuation*.
10 amp. DPDT.
CEXD-AR30-3† 12,2 N
2.75 lb.
5,56
.219
25°2,77
.109
CW actuation*. 1
amp.** SPDT.
EEXH-AR3 2,22-6,67 N
.5-1.5 lb.
5,56
.219
25°0,64
.025
CCW actuation*.
1 amp.** SPDT.
EEXH-AR33 11,1 N
2.5 lb. max.
1,65
.065
(3.5°)
25°0,64
.025
No lever furnished. (Order levers
shown at left of this page as
separate items.) CW actuation*.
SPDT.
AEX-AR20 0,22 Nm
31.25 in./oz.
5,56
.219
90°0,18
.007
(0.25°)
As above except CCW actuation. A EX-AR230 0,22 Nm
31.25 in./oz.
5,56
.219
90°0,18
.007
(0.25°)
Nm JNewton meters
* CW (clockwise) or CCW actuation, when looking
at nameplate.
** Hermetically sealed switching unit, furnished with
10.5 ft./3,2 m leadwire.
† Furnished with 0,91 m (3 ft.) leadwire
Characteristics; O.F. — Operating Force; P.T. —
Pretravel; O.T. — Overtravel; D.T. — Differential
Travel
For rapid response – off the shelf service, all bold face listings are normally stocked
items.
Adjustable length 12.5 Nmax. rod lever
with 1Nnylon roller.
6PA204-EX
Limit and Enclosed Switches EX Series
Explosion-Proof Switches
Honeywell1Sensing and Control11-800-537-6945 USA1F1-815-235-6847 International11-800-737-3360 CanadaA123
CROSS ROLLER LEVER ACTUATED SWITCH
ORDER GUIDE
P.T. D.T.
Elec. O.F. max. max.
Rating Catalog N mm O.T. mm
Description Pg. A121 Listing oz. in. max. in.
CW actuation* 15 amp. A EX-CR 2,22-5,56 5,56 90°0,18
SPDT 8-20 .219 .007
ONE-WAY ROLLER LEVER ACTUATED SWITCH
ORDER GUIDE
P.T. D.T.
Elec. O.F. max. max.
Rating Catalog N mm O.T. mm
Description Pg. A121 Listing oz. in. max. in.
CW actuation* 15 amp. A EX-AR128 2,22-5,56 5,56 90°0,18
SPDT 8-20 .219 .007
LOW FORCE ROD LEVER ACTUATED SWITCH
ORDER GUIDE
O.F.
Elec. max.
Rating Catalog N P.T. O.T.
Description Pg. A121 Listing oz. max. min. D.T.
Furnished without mounting A EX-AR1613 0,56 18°40°—
bracket. CW actuation* 2
15 amp. SPDT
MANUALLY ACTUATED SWITCH
ORDER GUIDE
O.F.
Elec. max.
Rating Catalog N
Description Pg. A121 Listing lb.
Large 3 x 3.5 inch paddle for fast, easy operation.
15 amp. A EX-AR50 11,1
SPDT 2.5
OVERTRAVEL PLUNGER ACTUATED SWITCHES
ORDER GUIDE
O.F. P.T. O.T. D.T.
Elec. max. max. min. max. O.P.**
Rating Catalog N mmmmmm mm
Description Pg. A121 Listing lb. in. in. in. in.
15 amp. A EX-Q 13,34 1,98 4,78 0,10 47,22
SPDT 3 .078 .188 .004 1.859
20 amp. B EXA-Q 8,90 1,27 3,18 0,23 46,02
SPDT 2 .050 .125 .009 1.812
Also UL listed 15 amp A EX-Q800 13,34 1,98 4,78 0,10 47,22
for Class I, SPDT 3 .078 .188 .004 1.859
Group B 10 amps C EXD-Q-3† 13,34 3,96 3,58 1,52 46,02
(hydrogen) DPDT 3 .156 .141 .060 1.812
atmospheres.
With seal boot on plunger. D EX-N15 13,34 1,98 4,78 0,10 52,32
10 amp. SPDT 3 .078 .188 .004 2.060
* CW (Clockwise) or CCW actuation, when looking at
nameplate.
** Tolerance ±1,52 in./.060 mm.
† Furnished with 0,91 m (3 ft.) leadwire.
Characteristics: O.F. — Operating Force; P.T. —
Pretravel; O.T. — Overtravel; D.T. — Differential
Travel
N JNewtons
Limit/ Enclosed
Limit and Enclosed Switches EX Series
Explosion-Proof Switches
A124Honeywell1Sensing and Control11-800-537-6945 USA1F1-815-235-6847 International11-800-737-3360 Canada
Double-conduit
connect switch EX switches on this page have conduit
openings on each side of the enclosure
which enable through-wiring. This feature
also allows the user to split the wiring of a
double-pole switch, with one-pole exiting
from each side.
The enclosure is larger than EX switches
with one conduit opening and provides ad-
ditional space for wiring.
NEMA
Double-conduit connect EX switches also
meet the applicable portions of the NEMA
classifications listed on page A121.
ROLLER LEVER ACTUATED SWITCHES ORDER GUIDE
P.T. D.T.
Elec. O.F. max. max.
Rating Catalog N mm O.T. mm
Description Pg. A121 Listing oz. in. max. in.
Two 1⁄2in. conduit openings. A 1EX1 2,22-5,56 5,56 90°0,18
CW actuation.* 15 amp. 8-20 .219 .007
SPDT.
Two 1⁄2in. conduit openings. B 2EX1 3,61-8,90 5,56 25°0,3
CW actuation.* 20 amp. 13-32 .219 .012
SPDT.
Two 3⁄4in. conduit openings. C 4EX1-3† 2,22-6,67 6,35 25°2,77
CW actuation.* 10 amp. 8-24 .250 .109
DPDT.
* CW (clockwise) or CCW actuation, when looking at
nameplate.
N JNewtons
† Furnished with 0,91 m (3 ft.) leadwire.
Characteristics: O.F. — Operating Force; P.T. —
Pretravel; O.T. — Overtravel; D.T. — Differential
Travel.
MOUNTING BRACKETS
15PA85-EX is used for top, bottom, back or
end mounting. It is furnished with each
switch, except where noted in the order
guides.
15PA86-EX is ordered separately for top
mounting of plunger switches. EX switches
may also be direct mounted, using 10-32
UNF screws.
Limit and Enclosed Switches EX Series
Explosion-Proof Switches
Honeywell1 Sensing and Control11-800-537-6945 USA1F1-815-235-6847 International11-800-737-3360 CanadaA125
REPLACEMENT PARTS
Catalog Listing
Replacement Part Numbers
Switch Switching
Listing Unit Actuator Springs
EX-AR BZ-2R-P4 6PA5-EX 33PA7-EX
EX-AR16 BZ-2RW88-P5 6PA5-EX —
EX-AR20 BZ-2R-P4 *33PA7-EX
EX-AR30 BZ-2R-P4 6PA5-EX 33PA5-EX
EX-AR50 BZ-2R-P4 6PA134-OP 33PA7-EX
EX-AR800 BZ-2R-P4 6PA5-EX 33PA7-EX
EX-CR BZ-2R-P4 6PA131-EX 33PA7-EX
EX-Q BZ-2R-P4 8PA15-EX —
EX-N15 BZ-2R15-P4 8PA12-EX —
EXA-AR BA-2R-P4 6PA5-EX 33PA6-EX
EXD-AR-3 DT-2R4-A7 6PA5-EX 33PA6-EX
EXH-AR3 4HS202 6PA5-EX 33PA6-EX
EXH-AR33 4HS203 6PA5-EX 33PA5-EX
EXD-AR30-3 DT-2R711-A7 6PA5-EX 33PA5-EX
Catalog Listing
Replacement Part Numbers
Switch Switching
Listing Unit Actuator Spring
EX-AR128 BZ-2R-P4 6PA130-EX 33-PA7-EX
EX-AR1613 BZ-2RW88-P5 6PA136-EX —
EX-Q800 BZ-2R-P4 8PA15-EX —
EXA-Q BA-2R-P4 8PA15-EX —
EXD-Q-3 DT-2R-A7 8PA77-EX —
1EX1 BZ-2R-P4 6PA5-EX 33PA7EX
2EX1 BA-2R-P4 6PA5-EX 33PA6-EX
4EX1-3 DT-2R4-A7 6PA5-EX 33PA6-EX
* Actuators for EX-AR20 are shown on page A122.
In addition to the items shown above, the following replaceable
internal levers are available: 33PA1-EX for EX-AR, EX-AR800,
EXA-AR, EXD-AR-3, EXH-AR3, EX-AR20, EX-CR, EX-AR128, 1EX1,
2EX1, and 4EX1-3.
MOUNTING DIMENSIONS (For reference only)
ROLLER LEVER NO LEVER
CROSS ROLLER LEVER ONE-WAY ROLLER LEVER
Limit/ Enclosed
Limit and Enclosed Switches EX Series
Explosion-Proof Switches
A126Honeywell1Sensing and Control11-800-537-6945 USA1F1-815-235-6847 International11-800-737-3360 Canada
MOUNTING DIMENSIONS (For reference only)
LOW FORCE ROD MANUAL ACTUATOR
PLUNGER PLUNGER WITH SEAL BOOT
SWITCHES WITH DOUBLE CONDUIT OPENINGS
ROLLER LEVER
