ST-Series Switch 1-Pole Off/(On)

STB1E4-53

ST-Series Single Pole Toggle Switch
ST-Series Single Pole Toggle Switch
Quick Overview

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.

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General

SeriesST-Series
Actuator StyleToggle
Number of Poles1
ConfigurationOff/(On)
TerminationScrew and cage clamp

Electrical

Contact Rating16 Amps, 12VDC/24VDC
Dielectric StrengthMIL-STD-202G, Method 301 (1500 Volts RMS)
Insulation ResistanceMIL-STD-202G, Method 302 (50 MegOhms, 500 VDC)
Initial Contact ResistanceMIL-STD-202G, Method 307 (10 milliOhms max.)
LifeOverload: 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.
ContactsSilver Alloy
TerminalsBrass or Copper / silver plated. 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.

Mechanical

LifeMechanical Endurance: 150,000 cycles total (at 25°C)

Physical

FunctionSingle/Double Pole with Single/Double Throw functions
OperationTwo/ Three position, Maintained/Momentary circuits
ToggleTin plated brass
Actuator, InternalPolyester PBT, UL94-V0 and fungus resistant per ASTM G- 21
SealsAll internal seals are silicone per A-A-59588-1A.
Mounting15/32”-32 UNS-2A threaded bushing with a keyway. A single nut and lock washer are supplied unassembled.
Bushing/Top PlateZinc/aluminum die cast, with tin plating.
BasePolyester PBT, UL94-V0 and fungus resistant per ASTM G-21
Actuation ForceInitial Actuation Forces ± 0.3 lb (2-Pole circuits)
Angular Movement14.5 degrees, each side of center

Environmental

TemperatureOperating: -40°C to +85°C. Storage: -65°C to +85°C.
VibrationMIL-STD-202G: Method 204D, Test Condition A (10 G peak, Harmonic, 10Hz to 500Hz sweeps, 9 hours total).
ShockMIL-STD-202G: Method 213B, Test Condition K (30 G, half sine)
Handling DropSAE J1455, Section 4.11.3.1, 1 meter drop in each of three planes
SealingMIL-STD-202G, Method 110 (sand and dust) IEC 60529, IP68 (dust-tight and continuous immersion in water)
Salt AtmosphereMIL-STD-202G, Method 101, Test Condition A (96 hrs)
Thermal ShockMIL-STD-202G, Method 107, Test Condition A (five cycles in air: -55°C, +25°C, +125°C, +25°C)
Moisture ResistanceMIL-STD-202G, Method 106 (ten 24-hour stepped cycles)
Chemical ResistanceNo 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%).

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.

Typical Applications:

  • Military Equipment
  • Armored Vehicles
  • Law Enforcement Vehicles
  • Off-Highway Vehicles
  • Applications requiring stringent sealing and performance capabilities