ST-Series
ST-Series
SEALED TOGGLE SWITCHES
Designed to comply with MIL-DTL-3950G requirements for environmentally sealed toggle switches,
Carling Technologies
®
ST-Series Sealed Toggle Switch features innovative design and performance
principles sure to withstand the most demanding applications.
The ST-Series features a toggle seal composed of dynamic silicone material that bonds to the metal toggle,
pin and bushing, providing ideal sealing and protection against the environment, vibration and shock,
while withstanding extreme temperature variations. It also utilizes up to three terminal seals per pole and
an optional o-ring assures additional under panel sealing protection. All silicone seals on the ST-Series
comply with A-A-59588 for silicone rubber performance specifications and, together, these features meet
the international IEC 60529 standard for sealing performance to an IP68 level.
Resources:
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Product Highlights:
Designed to comply with MIL-DTL-3950G
requirements
IEC 60529 IP68 sealing performance
Toggle seal bonds to toggle, pin and bushing
Complies with UL 61058-1 electrical spacing
requirements
Typical Applications:
Military Equipment
Armored Vehicles
Law Enforcement Vehicles
Off-Highway Vehicles
Applications requiring stringent sealing and
performance capabilities
Carling Technologies, Inc.
60 Johnson Avenue, Plainville, CT
06062
Email:
sales
@
carlingtech.com
Application Support:
team2
@
carlingtech.com
Phone:
860.793.9281
Fax:
860.793.9231
www.carlingtech.com
2 |
ST–Series Sealed Toggle Switch - Design Features
ST-Series Switch
DESIGN FEATURES
PINNED TOGGLE /
BUSHING
Keeps metal toggle firmly in
place and prevents rotation
BRASS ROLLER PIN
Provides rolling metal
on metal actuation for
maximum endurance
BASE SEAL CHANNEL
Perfectly fits the toggle
assembly seal decreasing
the dependence on
clamping forces and rivets
TERMINAL BARRIERS
Comply with
UL-61058-1 electrical
spacing requirements
OPTIONAL O-RING
Assures additional
under panel sealing
protection
BUSHING/TOGGLE SEAL
Composed of dynamic
silicone material that bonds
to the metal toggle, pin
and bushing
RIVETS
High purity copper composite
and silver alloy materials handle
various electrical loads and
maintain low contact resistance
TERMINAL SEALS
Assure a secure seal at extreme
temperatures. Eliminates potential
for separated joints associated with
insert molded constructions
Email: sales
@
carlingtech.com Application Support: team2@carlingtech.com
Phone: (860) 793–9281 Fax: (860) 793–9231
www.carlingtech.com
ST–Series Sealed Toggle Switch - General Specifications
| 3
Electrical
16A 12V/24V
MIL-STD-202G, Method 301
(1500 Volts RMS)
Insulation Resistance
MIL-STD-202G, Method 302
(50 MegOhms, 500 VDC)
Initial Contact Resistance MIL-STD-202G, Method 307
(10 milliOhms max.)
Life
Overload: MIL-DTL-3950G,
Section 4.8.11.1
Electrical Endurance and
Temperature: UL 61058-1
Momentary circuits: 25,000
operations, minimum.
Maintained circuits: 50,000
operations, minimum.
Testing ongoing to determine
maximum values.
Silver Alloy
Contacts
Terminals
Brass or Copper / silver plated.
Tab Terminal: ¼” quick-connect
Screw Terminal: #6-32 brass
screw and cage clamp
MIL-STD-202G, Method 211 Test
Condition A, and B: 25 lb. pull
test, two terminal bends.
Contact Rating
Dielectric Strength
Mechanical
Life
Mechanical Endurance: 150,000
cycles total (at 25°C)
Environmental
Temperature
Vibration
Shock
Handling Drop
Sealing
Salt Atmosphere
Thermal Shock
Moisture Resistance,
Humidity
Chemical Resistance
Physical
Function
Operation
Toggle
Actuator
Internal Seals
Mounting
Bushing/Top Plate
Base
Actuation Force
Angular Movement
Single/Double Pole with
Single/Double Throw functions
Two/ Three position, Maintained/
Momentary circuits
Tin plated brass
Polyester PBT, UL94-V0 and
fungus resistant per ASTM G- 21
All internal seals are silicone per
A-A-59588-1A.
15/32”-32 UNS-2A threaded
bushing with a keyway. A single
nut and lock washer are supplied
unassembled.
Zinc/aluminum die cast, with
tin plating.
Polyester PBT, UL94-V0 and
fungus resistant per ASTM G-21
Initial Actuation Forces ± 0.3 lb
(2-Pole circuits)
14.5 degrees, each side of center
Operating: -40°C to +85°C
Storage: -65°C to +85°C
MIL-STD-202G: Method 204D,
Test Condition A (10 G peak,
Harmonic, 10Hz to 500Hz
sweeps, 9 hours total).
MIL-STD-202G: Method 213B,
Test Condition K (30 G, half sine)
SAE J1455, Section 4.11.3.1, 1
meter drop in each of three
planes
MIL-STD-202G, Method 110
(sand and dust)
IEC 60529, IP68 (dust-tight and
continuous immersion in water)
MIL-STD-202G, Method 101, Test
Condition A (96 hrs)
MIL-STD-202G, Method 107, Test
Condition A (five cycles in air:
-55°C, +25°C, +125°C, +25°C)
MIL-STD-202G, Method 106
(ten 24-hour stepped cycles)
No permanent loss of function,
obvious loss of sealing, distortion,
softening, embrittlement,
discoloration or corrosion after
being brushed for 10 minutes,
wetting all exposed surfaces.
Relevant chemical compatibility
documentation may be used in
place of testing.
Chemical
Concentration
Gasoline
100%
Ethylene Glycol
50% in water
Ethanol/Methanol 10% in water
Diesel Fuel
100%
*Manufacturer reserves the right to change product specification without prior notice.
Email: sales
@
carlingtech.com Application Support: team2@carlingtech.com
Phone: (860) 793–9281 Fax: (860) 793–9231
www.carlingtech.com
4 |
ST–Series Sealed Toggle Switch - Ordering Scheme
1
Series
ST A 2 E 1
2
Circuit
3
Poles
4
Rating
5
Termination
6
Toggle
Style
53
1 SERIES
1
ST
Sealed Toggle
2 CIRCUIT
4 RATING
E
16A, 12/24V
5 TERMINATION
1
.250 (6.4mm) TAB (QC)
4
Screw with Cage Clamps
B
5
.250 (6.4mm) TAB (QC). Jumper T2 to T5. No terminal at T5
E
5
Screw with Cage Clamps. Jumper T2 to T5. No terminal at T5
6 TOGGLE STYLE
Without Panel Seal
53
With Panel Seal (Bulk)
58
2 & 3, 5 & 6
Position:
1
A
ON
(ON)
B
C
ON
D
ON
F
ON
J
ON
K
ON
L
(ON)
Special Circuits
E
2,3
5&6
G
2,4
2 & 3, 5 & 6
M
2,4
(2 & 3, 5 & 6)
Connected Terminals
2
NONE
NONE
NONE
NONE
NONE
OFF
OFF
OFF
5&3
2&3
2&3
1 & 2, 4 & 5
3
OFF
OFF
(OFF)
ON
(ON)
ON
(ON)
(ON)
5&1
OFF
OFF
Toggle Length
.561
.561
Bushing Length
.385
.385
3 POLES
1
Single pole using terminals 1, 2 & 3
2
Double pole using terminals 1, 2, 3, 4, 5 & 6
Notes:
1
Standard hardware is (1) inner tooth lock washer and (1) hex nut bulk.
2
Available only with 2 pole option in selection box # 3.
3
External customer supplied jumper required between terminals 2 & 4 to get
SP ON-ON-ON circuit.
4
Available with termination B and E only.
5
Available with special circuit G and M only.
Email: sales
@
carlingtech.com Application Support: team2@carlingtech.com
Phone: (860) 793–9281 Fax: (860) 793–9231
www.carlingtech.com
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