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MICRO SWITCH Heavy-Duty Limit Switch, HDLS Series

High temperature/Chemical-resistant Switches

Completely fluorocarbon (FC)-sealed switches have a full FC

body gasket coving the switch cavity. Rotary types have an

extra FC seal on the operating shaft, while plunger versions

have FC boot seals. They are for use in many applications

where the environment includes fire-resistant synthetic fluids.

In addition to most all fluids, the FC-sealed switches may be

used with such industrial fluids such as Cellulube, Fyrquell,

Houghto-Safe, Pydraul, and other special cutting and hydrau-

lic fluids. The additional FC seals also promote longer oper-

ating life for rotary-actuated HDLS switches in applications

where the temperatures are normally -12°C to 121°C [10°F

to 250°F]. If pre-wired with cable, then temperature limits are

105°C [221°F] dry and 60°C [140°F] wet.

To order, insert the additional letters

Y and C in the appropri-

ate places in the standard catalog listing, as shown below:

LSA1A

standard, side-rotary plug-in switch

LSYAC1A

completely FC-sealed version of LSA1A

SPECIAL OPTIONS

Low Temperature Switches

All forms of HDLS limit switches are also available in low-tem-

perature construction. Design features include fluorosilicone

diaphragm, shaft seals, and external booth seal (where appli-

cable). If pre-wired with a cable, low temperature limits are

-10°C [14°F] flex and -30°C [-22°F] non-flex.

To order, insert the additional letters

Y and B in the appropriate

places in the standard catalog listing, as shown below:

LSA1A

standard, side-rotary plug-in switch

LSYAB1A

low-temperature version of LSA1A

Conduit Openings

For conduit openings other than 1/2-NPT and 3/4-NPT, subsi-

tute the following after LS in the catalog listing:

LS3 PG13,5

LS4 20 mm

LSA1A

side rotary with 1/2-14 NPT conduit

LS4A1A

side rotary with 20 mm conduit

Table 2. Temperature Limits

Standard HDLS

Low Temperature HDLS

(Fluorosilicone Sealed): Y_B

High Temperature HDLS

(Fluorocarbon Sealed)*: Y_C

Low Limit

High Limit

Low Limit

High Limit

Low Limit

High

Limit

-12°C

[10°F]

-1°C

[30°F]

93°C

[200°F]

121°C

[250°F]

-40°C

[-40°F]

-29°C

[-20°F]

93°C

[200°F]

121°C

[250°F]

-12°C

[10°F]

-1°C

[30°F]

121°C

[250°F]

LSA - Side Rotary Momentary

X

X

X

X

X

X

LSB - Top Rotary

X

X

X

X

X

X

LSC - Top Plain Plunger

X

X

X

X

X

X

LSD - Top Roller Plunger

X

X

X

X

X

X

LSE - Side Plain Plunger

X

X

X

X

X

X

LSF - Side Roller Plunger

X

X

X

X

X

X

LSG - Side Plunger, Maintained

X

X

X

X

X

X

LSH - Side Rotary, Low PT, Low Torque

X

X

X

X

X

X

LSJ - Wobble Stick

X

X

X

X

X

X

LSK - Cat Whisker

X

X

X

X

X

X

LSL - Side Rotary, Sequence

X

X

X

X

X

X

LSM - Side Rotary, Center Neutral

X

X

X

X

X

X

LSN - Side Rotary, Maintained

X

X

X

X

X

X

LSP - Side Rotary, Low Pretravel

X

X

X

X

X

X

LSR - Side Rotary, Low Torque

X

X

X

X

X

X

LSU - 5º Low Pretravel

X

X

X

X

X

X

LSV - Top Adjustable Plunger

X

X

X

X

X

X

LSW - Side Adjustable Plunger

X

X

X

X

X

X

* For HDLS application wherein the upper temperature limit is normally above 93°C [200°F], much longer switch life can be obtained by using

completely fluorocarbon-sealed switches rather than standard HDLS.