Benefits: Low profile switches and
generally used where space behind the
panel is limited. Used in control panel
or equipment operation applications
where a panel-mount switch with an
environment-proof sealing rating
is needed. Potential applications
include industrial machinery and
equipment, military and commercial
aviation, construction equipment, test
instruments, agricultural machinery,
process control, and medical
HM Series.
SEALED TOGGLE SWITCHES
AT Series.
Features: Hermetically sealed per
MIL-PRF-8805, design symbol 5 •
MIL-PFR-8805 qualified listing • Broad
temperature range of -65 °C to 121 °C
[-85 °F to 250 °F] • High temperature
construction, -65 °C to 260 °C [-85 °F to
500 °F] • Reduced sensitivity to changes
in altitude or pressure • Compact size,
light weight • Choice of actuation and
termination
Features: Gold or silver contacts
• Choice of sealed bushing • Standard
or pull-to-unlock toggle lever • Short
behind-panel depth • Solder or quick-
connect termination • 2,4, 6, or 8
SPDT precision basic switches • 2- or
3-position, momentary and maintained
action
Benefits: Precision switch conserves
space and weight. Pull-to-unlock lever
prevents accidental operation: the lever
must be pulled approximately 2,3 mm
[0.09 inches] to change the positions.
Hermetic basic switches are available.
Potential applications include industrial
machinery and equipment, military
and commercial aviation, construction
equipment, test instruments, agricultural
machinery, process control, and medical
instrumentation.
Benefits: Some special versions operate
as high as 400 °C [752 °F]or as low as
-184 °C [-299 °F]. Different contact
materials (gold and silver) allow the
control of a logic-level resistive load
up to 4 A at 28 Vdc. Contains contacts
in a sealed chamber. Gas-tight seal is
maintained while transmitting force
and motion to the switch mechanism
through a metal diaphragm. Not
recommended for 115 Vac, 60 Hz.
Potential applications include adverse
gas or vapor environments, oil drilling
installations, marine environments,
submarines and stationary undersea
equipment, refrigeration units, aircraft
and spacecraft, earth moving machinery,
desert vehicles, and cement mills.
instrumentation.
ET Series.
Features: Most listings qualified to
MIL-S-5594 • Environment-proof sealing
• Holding coil replaces mechanical
holding mechanisms to maintain toggle
in operate position • 2- and 3-position
maintained and momentary toggle
action • SPDT and DPDT circuitry
Benefits: With an open circuit,
the ET functions as a momentary
contact switch. Potential applications
include industrial machinery and
equipment, military and commercial
aviation, construction equipment, test
instruments, agricultural machinery,
process control, and medical
TS Series.
Features: 2- or 3-position, momentary
and maintained action • 1- and 2-pole
circuitry • Solder, screw, or quick-connect
terminals • Rated up to 20 A • Lever-to-
bushing seal
Benefits: Generally used in low-
cost commercial applications. Not
recommended for use where sealing
is critical. Potential applications
include industrial machinery and
equipment, military and commercial
aviation, construction equipment, test
instruments, agricultural machinery,
process control, and medical
HS Series.
instrumentation.
Features: Hermetically sealed per MIL-
PRF-8805, design symbol 5 • Power load
switching capability to 25 A at 28 Vdc •
Broad temperature range -55 °C to 125
°C [-67 °F to 250 °F] • High temperature
construction, 149 °C [300 °F] • Reduced
sensitivity to changes in altitude or
pressure • Choice of actuation
NT Series.
Features: Completely sealed switching
chamber • IP67/IP68 • NEMA 3, 3R,
4, and 13 • Step-design case provides
added space between terminals to
prevent shorting • 2- and 3-position,
maintained and momentary toggle
action • Spring-loaded mechanism
provides excellent tactile feedback
• Features an “easy-start” threaded
bushing and thermplastic case • High
impact strength, non-tracking case
enhances electrical stability
instrumentation.
Benefits: HS Series is a larger version of
the HM Series. Allows control of a logic-
level resistive load up to 25 A at 28 Vdc.
Potential applications include adverse
gas or vapor environments, aircraft and
helicopters, steam cleaning of food
processing machines, moist, dusty, or
oily environments, and industrial valve
controls.
TW Series.
Features: Qualified to MIL-DTL-83731
• IWTS (Integrated Wire Termination
System) • Saves space and weight • SPDT
and DPDT circuitry • Temperature range:
-65 °C to 71 °C [-85 °F to 160 °F] • Silver
alloy or gold-plated contacts • Sealed
bushing versions • Choice of 1/4 in or
15/32 in bushing • Color tab available on
15/32 in bushing
Benefits: Meets a variety of electrical
load requirements. Switching chamber
is completely sealed in a Thermoset
case. Used in a wide variety of industrial
and commercial settings. Potential
applications include aerial lifts, scissor
lifts, truck mounted tele-handlers/
cranes, construction equipment,
4
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