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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

Explosion-Proof Switches

A112Honeywell1 Sensing and Control11-800-537-6945 USA1F1-815-235-6847 International11-800-737-3360 Canada

MICRO SWITCH explosion-proof switches contain and cool the

escaping hot gases that otherwise could cause an explosion out-

side the switch. Most of them are UL-CSA listed. Appropriate file

reference numbers and copies of the card file are available from

your local Branch Office or MICRO SWITCH, Freeport, Illinois.

Switches described on the following pages, except as noted below,

are UL listed as follows:

NEMA TYPE 7, CLASS I

FLAMMABLE GASES OR VAPORS

Type 7 enclosures are for use indoors in

locations classified as Class I, Groups B, C,

or D by the National Electrical Code.

Group B — (only switches so noted in the

order guides include this listing). Atmo-

spheres containing hydrogen or manufac-

tured gas.

Group C — atmospheres containing diethyl

ether, ethylene, or cyclopropane.

Group D — Atmospheres containing gaso-

line, hexane, butane, naptha, propane, ace-

tone, toluene, or isoprene.

DIVISION 1

Locations in which hazardous agents are

present under normal operating conditions.

DIVISION 2

Locations in which hazardous agents may

be present only in case of accidental rupture

or breakdown.

All MICRO SWITCH listings covered in Divi-

sion 1 are also covered in the same groups

in Division 2.

NEMA TYPE 9, CLASS II

COMBUSTIBLE DUSTS

Type 9 enclosures are for use in indoor

locations classified as Class II, Groups E, F

or G, as defined in the National Electrical

Code.

Group E — Atmospheres containing metal

dust.

Group F — Atmospheres containing carbon

black, coal dust or coke dust.

Group G — Atmospheres containing flour,

starch, or grain dust.

Limit and Enclosed Switches LSX Series

Weather-Sealed Explosion-Proof Switches

Honeywell1 Sensing and Control11-800-537-6945 USA1F1-815-235-6847 International11-800-737-3360 CanadaA113

LSX switches are for use either indoors or

outdoors in hazardous atmospheres as they

are a completely sealed explosion-proof de-

vice. Mounting hole location and tracking is

same as the long established MICRO

SWITCH ML-E1 explosion-proof switch.

An optional mounting plate provides the

same tracking and mounting as the stan-

dard HDLS. The majority of HDLS operating

heads and circuitry options are available on

the LSX.

Standard HDLS levers are used, but be-

cause of explosion-proof requirements, on-

ly nylon rollers or other non-sparking materi-

al can be selected. Plunger and cat whisker

types listed in the LSX order guide are of

non-sparking material.

SEALS

Application proven HDLS head seals are

retained to seal the top of the LSX. The

circular cover on the front is easily unscrew-

ed to expose the switching elements for

wiring or replacement. A screwdriver or bar

used on the wrenching lugs extending from

the front of the cover allows easy removal or

tightening. An O-ring seal is located be-

tween the housing and cover.

The LSX withstands pressure of an internal

explosion and cools the exploding gases

below the kindling temperature of the explo-

sive atmosphere. Flame paths are provided

by the cover-housing threads and an ex-

tended plunger between the switch cavity

and head.

FEATURES

1Sealing - applicable portions of NEMA 1,

3, 4, 6, 7, 9, and 13.

1Tracking interchangeability with MICRO

SWITCH ML-E1 and HDLS.

1Variety of heads and non-sparking

actuators.

1Field adjustability matches switch to

application.

1Momentary, maintained, random

sequence, or center neutral action.

110 amps continuous carry electrical

rating.

1Choice of silver or gold contacts.

11⁄2or 3⁄4inch conduit opening.

1UL Listed, file #E61730

1CSA Certified, file #LR57327

1Internal grounding screw.

NEMA standards: 1, 3, 4, 6, 7, 9 and 13. UL

listed and CSA certified: Class I, Div. 1,

Groups B, C and D. Class II, Div. 1, Groups

E, F and G.

Limit/ Enclosed

Limit and Enclosed Switches LSX Series

Weather-Sealed Explosion-Proof Switches

A114Honeywell1 Sensing and Control11-800-537-6945 USA1F1-815-235-6847 International11-800-737-3360 Canada

HOW TO ORDER

The order guide shows the option codes which are added to the LSX prefix to

specify the operating head, body and circuitry, assembly modifications (if

desired) and actuator type.

The example given below is LSXA3K-1A. This is an explosion-proof LSX

switch with the standard side rotary momentary-action head (A), single-pole

circuitry and

⁄

in. conduit opening (3K). Since no modification codes are

listed, it is adjusted for both clockwise (CW) and counterclockwise (CCW)

operation, with the actuator shaft facing the front (label side) of the switch.

The actuator (-1A) is in a 1.5 in. lever with a .75 in. nylon roller on the open side.

There are list price adders for double-pole circuitry and the actuators. (Levers

may also be ordered separately by specifying the LSX listings shown in the

actuator code description.)

ORDER GUIDE

LSX standard weather-sealed explosion-proof switch.

Typical Catalog Listing: LSX A 3K

Head Code

Side rotary. Momentary.

Side rotary. Low

differential travel.

Momentary.

Side rotary. Low torque.

Momentary.

Adjustable top plunger.

Momentary.

Side rotary. Low

differential travel and low

torque. Momentary.

Side rotary. Maintained

contact.

Top rotary. Momentary.

Adjustable side plunger.

Momentary.

Top plunger. Momentary.

Top roller plunger.

Momentary.

Side plunger.

Momentary.

Side roller plunger.

Momentary.

Wobble

stick.

Momentary.

Cat

whisker.

Momentary.

* Available with a Single Pole N.C. Direct Acting contact.

Electrical Rating D. To order, use 3N for body and circuitry

code.

Body and Contacts

Circuitry Code

3K Silver

3E Gold plated

Single-pole, 1 N.O., 1

N.C.,

⁄

in. conduit.†

⁄

in. conduit†

4L Silver

4S Gold plated

Double-pole, 2 N.O., 2

N.C.,

⁄

in. conduit.†

7L Silver

⁄

in. conduit†

7S Gold plated

3N SPNC Direct Acting

Side rotary. Sequence

operation.

4M Silver

4T Gold plated

Sequential. Pole 1

operates before Pole 2

(CW, CCW or both).

⁄

in.

conduit.†

7T Gold plated

⁄

in.

conduit.

Side rotary. Center

neutral.

4N Silver

4U Gold plated

Center neutral. Pole 1

operates CCW, Pole 2

operates CW.

⁄

in.

conduit.†

7U Gold contacts

⁄

in.

conduit

Only

Limit and Enclosed Switches LSX Series

Weather-Sealed Explosion-Proof Switches

Honeywell1 Sensing and Control11-800-537-6945 USA1F1-815-235-6847 International11-800-737-3360 CanadaA115

ELECTRICAL RATINGS

Same as HDLS, see page A34.

OPERATING CHARACTERISTICS

See next page.

TEMPERATURE RATINGS

Same as HDLS, see page A56.

ENVIRONMENTAL SEAL PERFORMANCE

Same as HDLS, see page A56.

LOW TEMPERATURE and HIGH TEMPERATURE SEALED

See next page.

Actuation

Direction

Modification Code

(No additional cost.)

No Code.

CW and CCW. (Head

types A, B, H, L, P, R.)

CW operation.

(Optional with head

types A, B, H, L, P, R.)

CCW operation.

(Optional with head

types A, B, H, L, P, R.)

Head/Actuator

Orientation

Modification Code

(No additional cost.)

No Code.

Side rotary heads

assembled with

actuator shaft facing

front. Roller on top

roller plungers

assembled parallel to

mounting surface.

Head

assem-

bled

with

actuator

shaft to

right side.

(Optional with head

types A, E, F, H, L, M,

N, P, R.)

Head

assem-

bled

with

actuator

shaft to left side.

(Optional with head

types A, E, F, H, L, M,

N, P, R.)

Head

assem-

bled

with

actuator

shaft to

back of

switch. (Optional with

head types A, E, F, H,

L, M, N, P, R.)

Roller on

top roller

plungers

assembled

perpendicular

to mounting surface.

(Optional with head

type D.)

Roller on side plunger

is assembled in vertical

position.

Actuator Code

LSZ51 lever

(no roller).

LSZ51A lever

with .75 in. nylon

roller on front side.

LSZ51C lever

with nylon roller

on back side.

LSZ52C

adjust-

able

lever (1.5-3.5 in.) with .75 in. nylon

roller.

LSZ52J

adjust-

able

lever (1.5-3.5 in.) with 1 in. nylon roller.

LSZ52K

adjust-

able

lever (1.5-3.5 in.) with 1.5 in. nylon

roller.

LSZ53S yoke lever

with .75 in. nylon

rollers (same side).

LSZ53E yoke lever

with .75 in. nylon

roller (one ea. side).

LSZ54M

aluminum rod

actuator.

LSZ54 hub for

rod actuator.

LSZ55 offset lever

(no roller).

LSZ55A offset lever

with .75 in. nylon

roller on back side.

LSZ55C offset lever

with .75 in. nylon

roller on front side.

Wobble stick actuator. (Use with head

type J only.)

Cat whisker actuator. (Use with head

type K only.)

1.5 in. long levers, except where noted.

Limit/ Enclosed

Limit and Enclosed Switches LSX Series

Weather-Sealed Explosion-Proof Switches

A116Honeywell1 Sensing and Control11-800-537-6945 USA1F1-815-235-6847 International11-800-737-3360 Canada

OPERATING CHARACTERISTICS

Rotary actuated switches

Side Rotary

Center Top Rotary

Momentary Maintained Sequence Neutral Momentary

LSXP LSXH LSXL LSXM

LSXA Low Diff. LSXR Low Diff. (Double Pole (Double Pole

Standard Travel Low Torque Low Torque LSXN Only) Only) LSXB

Pretravel max. 15°9°15°9°65°1st step 15°18°25°

2nd step 10°

additional

Overtravel min. 60°66°60°66°20°48°57°100°

Differential SPDT DPDT SPDT DPDT SPDT DPDT SPDT DPDT SPDT DPDT SPDT DPDT

Travel max. 5°7°3°4°5°7°3°4°30°35°5°10°10°12°

Operating 0,45 Nm 0,45 Nm 0,19 0,19 Nm 0,45 Nm 0,45 Nm 0,45 Nm 0,28 Nm

Torque max. 4 in. lbs. 4 in. lbs. 1.7 in. lbs. 1.7 in. lbs. 4 in. lbs. 4 in. lbs. 4 in. lbs. 2.5 in. lbs.

Operating 10 to 250°F 30 to 250°F 10 to 250°F 30 to 250°F

Temp. Range –12 to 121°C –1 to 121°C –12 to 121°C –1 to 121°C

Nm JNewton meters

Plunger actuated switches

Momentary

LSXC LSXD LSXE LSXF

Top Plunger Top Roller Plunger Side Plunger Side Roller Plunger

Pretravel max. 1,78mm 1,78mm 2,54mm 2,54mm

.070 in. .070 in. .100 in. .100 in.

Differential Travel max. SPDT DPDT SPDT DPDT

0,38mm 0,51mm 0,38mm 0,51mm 1,14mm 1,14mm

.015 in. .020 in. .015 in. .020 in. .045 in. .045 in.

Overtravel min. 4,83mm 4,83mm 4,83mm 4,83mm

.190 in. .190 in. .190 in. .190 in.

Operating Force max. 17,8 N 17,8 N 26,7 N 26,7 N

4 lbs. 4 lbs. 6 lbs. 6 lbs.

Operating Point 58,5 ±0,76mm 68,6 ±1mm 33,0 ±0,76mm 44,1 ±1mm

2.305 ±.030 in. 2.700 ±.040 in. 1.300 ±.030 in. 1.735 ±.040 in.

Operating Temperature Range –12 to 93°C

10 to 200°F

Wobble Actuated Switches

Momentary

LSXJ LSXK Cat Whisker

Delrin Rod (Wire)

Radius approx.

Pretravel max. 25,4mm 50,8mm

1.0 in. 2.0 in.

Operating Force max. 2,78 N 1,39 N

10 oz. 5.0 oz.

Operating Temperature Range –12 to 93°C

10 to 200°F

N JNewtons

COMPLETELY FLUOROCARBON-

SEALED AND LOW TEMPERATURE

SWITCHES

Completely fluorocarbon-sealed and low

temperature construction LSX switches are

available. See page A42 for a full description

of both of these options.

How to order

For fluorocarbon-sealed switches, insert

the additional letters Y and C in the appropri-

ate places in the standard catalog listing; for

low temperature versions insert the addi-

tional letters Y and B. Examples follow:

LSXA3K—standard side rotary switch

LSXYAC3K—completely fluorocarbon-

sealed version of the LSXA3K

LSXA3K—standard side rotary switch

LSXYAB3K—low temperature version of

the LSXA3K

Limit and Enclosed Switches LSX Series

Weather-Sealed Explosion-Proof Switches

Honeywell1 Sensing and Control11-800-537-6945 USA1F1-815-235-6847 International11-800-737-3360 CanadaA117

ADAPTER PLATE

Catalog Listing LSXZ4022 adapter plate en-

ables the explosion-proof LSX to be mount-

ed on existing HDLS mounting holes. The

LSX has a recessed back into which the

adapter plate fits and mounts, using two

screws (furnished).

REPLACEMENT PARTS

Operating Heads

Catalog Listing

Switch Type Operating Head Only

LSXA LSZ1A

LSXB LSZ1B

LSXC LSXZ1C

LSXD LSXZ1D

LSXE LSXZ1E

LSXF LSXZ1F

LSXH LSZ1H

LSXJ LSZ1JGA

LSXK LSXZ1KHA

LSXL LSZ1L

LSXM LSZ1M

LSXN LSZ1N

LSXP LSZ1P

LSXR LSZ1R

Contact Blocks

Circuitry Contact Block

Single Pole LSXZ3K

Double Pole LSXZ3L

Sequence or Center Neutral LSXZ3M

MOUNTING DIMENSIONS (For reference only)

TOP SIDE

ROTARY ROTARY

Conduit Openings

(LSXA3, LSXB3, LSXH3, LSXN3,

LSXP3 and LSXR3 have 1⁄2-14 NPT.

LSXA4, LSXB4, LSXH4, LSXLR,

LSXM4, LSXN4, LSXP4, and LSXR4 have 3⁄4-14 NPT.

Limit/ Enclosed

Limit and Enclosed Switches LSX Series

Weather-Sealed Explosion-Proof Switches

A118Honeywell1Sensing and Control11-800-537-6945 USA1F1-815-235-6847 International11-800-737-3360 Canada

MOUNTING DIMENSIONS (For reference only)

TOP PLUNGER TOP ROLLER PLUNGER

CAT WHISKER WOBBLE STICK

TOP PLUNGER TOP ROLLER PLUNGER

Conduit Openings

(LSXJ3, and LSXK3 have 1⁄2-14 NPT.)

(LSXJ4 and LSXK4 have 3⁄4-14 NPT.)

Conduit Openings

(LSXE3 and LSXF3 have 1⁄2-14 NPT.

LSXE4 and LSXF4 have 3⁄4-14 NPT).

Conduit Openings

(LSXC3 and LSXD3 have 1⁄2-14 NPT.

LSXC4 and LSXD4 have 3⁄4-14 NPT).