TOGGLE SWITCHES
These miniature toggles are rugged, highly reliable switches
offering positive detent action for safe switching operation.
Featuring the unique OTTO snap-action switch mechanism in
conjunction with a unique toggle actuator design, the T3 series
offers snap-action contact actuation.
High contact pressure and superior wiping action of the OTTO
design makes the T3 series an excellent choice for switching
loads from logic level up to 5 amps.
Choose sealed one or two pole circuitry, 15/32-32 sealed
or 1/4-40 unsealed bushing construction, momentary and/or
maintained operation. The 15/32-32 bushing model is also
available with lever lockout toggle feature or thumb
button actuators.
Molded-in terminals seal the contacts against moisture and
solder flux wicking. The front-panel side of 15/32-32 bushing
models are sealed against water and other liquids per
MIL-DTL-83731.
In addition to the single turret solder terminal specified in
MIL-DTL-83731, we also offer two different lengths of pins
for printed circuit soldering.
Mounting hardware provided includes two hex nuts, one
lockwasher and one keyway washer.
Features:
• Snap-actioncontactactuation
• Shorterbehindpaneldepth
• Superiorwipingactionkeepscontactsclean
• Positivetactileresponsepreventsoperatingerrors
• Weighsupto25%lessthancompetitiveproducts
• Morecontact/terminalplatingchoices
• Highlyreliable,simplerdesign,fewerparts
• Blackmattefinishavailable.Contactfactory.
• RoHS/WEEE/Reachcompliant
StandardCharacteristics/Ratings:
ELECTRICALRATINGS:
Load SeaLevel@28VDC @65,000Feet
or115VAC,400Hz
Resistive 5A 5A
Inductive 2A 2A
Lamp 1A N/A
DWV 1050Vrms 400Vrms
ElectricalLife: 30,000 cycles
MechanicalLife: 100,000 cycles
Seal: MIL-DTL-83731 (15/32-32 bushing style only)
OperatingTempRange: -65°C to +85°C
MATERIALS:
Handle: 303 Stainless
Bushing: Per MIL-DTL-83731
Body: Per MIL-DTL-83731
TerminalHardware: None required
MountingHardware: Hex nuts, lockwasher and keyway washer
T3-1
Style
T3-5
Style
T3-3
Style T3-1
Style
T3-2 Style
T3-4
Style
BushingStyle TerminalStyle Circuitry CircuitMadeWithLeverAt: ContactMaterial LockoutFeature ButtonColor
(forbushingstyles4&5only)
1. 15/32-32
2. 1/4-40
3. 15/32-32 With
Lockout ➀
4. 15/32-32 With
Convex Button ➁
5.15/32-32 With
Concave Button➁
1. Single Turret
4. PC Pin 0.150” lg.
5. PC Pin 0.270” lg.
1. Single Pole
2. Double Pole
Keyway Center Opposite
Side Keyway
1. ON OFF ON
2. OFF NONE ON
3. ON NONE ON
4. (ON) NONE ON
5. (ON) OFF (ON)
6. (ON) OFF ON
1. Silver/Gold Flash
2. Gold Plate
Lockout feature
configuration code
letters A–P for
bushing style 3 only.
Otherwise omit.
1. Red
2. Black
8. Grey
NOTE: ( ) denotes momentary action.
T3PARTNUMBERCODE
T3–XXXXXX–orX
COMMERCIAL & MIL MINIATURE TOGGLES MINIATURE
TOGGLES
T3
FEATURING OTTO’S UNIQUE SNAP-ACTION MECHANISM
Specifications Subject To Change Without Notice www.ottoexcellence.com 180
Special Note: For black levers and
bushings, please contact factory.
➀ Add appropriate lockout feature configuration code letter (A thru P) for bushing style 3 only.
➁ Button color codes (1, 2 and 8) for bushing styles 4 and 5 at end of Part Number.
CircuitMadeWithLeverAt 15/32”Bushing(Sealed) 1/4-40”Bushing(Unsealed) LeverLock-15/32”Bushing(Sealed)
 No. Keyway Center Opposite MIL-SPEC OTTO MIL-SPEC OTTO MIL-SPEC OTTO Suffixfor
 Poles Side Position Keyway Part Part Part Part Part Part Lockout
1-24-5 2-35-6 Number Number Number Number Number Number Feature
1 ON OFF ON MS27718-21-1 T3-11111 MS27716-21-1 T3-21111 MS27720-21-1_ T3-31111_ All
1 OFF None ON MS27718-22-1 T3-11121 MS27716-22-1 T3-21121 MS27720-22-1_ T3-31121_ D, F, G
1 ON None ON MS27718-23-1 T3-11131 MS27716-23-1 T3-21131 MS27720-23-1_ T3-31131_ D, F, G
1 (ON) None ON MS27718-26-1 T3-11141 MS27716-26-1 T3-21141 MS27720-26-1_ T3-31141_ F
1 (ON) OFF (ON) MS27718-27-1 T3-11151 MS27716-27-1 T3-21151 MS27720-27-1_ T3-31151_ E, L, N
1 (ON) OFF ON MS27718-31-1 T3-11161 MS27716-31-1 T3-21161 MS27720-31-1_ T3-31161_ E, F, K, L, M, N
2 ON OFF ON MS27719-21-1 T3-11211 MS27717-21-1 T3-21211 MS27721-21-1_ T3-31211_ All
2 OFF None ON MS27719-22-1 T3-11221 MS27717-22-1 T3-21221 MS27721-22-1_ T3-31221_ D, F, G
2 ON None ON MS27719-23-1 T3-11231 MS27717-23-1 T3-21231 MS27721-23-1_ T3-31231_ D, F, G
2 (ON) None ON MS27719-26-1 T3-11241 MS27717-26-1 T3-21241 MS27721-26-1_ T3-31241_ F
2 (ON) OFF (ON) MS27719-27-1 T3-11251 MS27717-27-1 T3-21251 MS27721-27-1_ T3-31251_ E, L, N
2 (ON) OFF ON MS27719-31-1 T3-11261 MS27717-31-1 T3-21261 MS27721-31-1_ T3-31261_ E, F, K, L, M, N
StandardToggle,
15/32-32Bushing
Sealed front panel construction.
LeverLockoutToggle,15/32-32Bushing
Sealed front panel construction.
StandardToggle,
1/4-40Bushing
Unsealed front panel construction. Optional
front panel seal P/N 700223.
ThumbActuators,15/32-32Bushing
Sealed front panel construction. Behind-panel
dimensions same as 15/32-32 Bushing style.
LeverLockoutConfigurationCodes
Figures A thru P are schematics to illustrate lockout
configurations and momentary positions. They do
not represent details of construction.
A Locked in all three positions
B Locked in Center and Keyway Side position
D Locked out of Center position
E Locked in Center position
F Locked in Opposite Keyway position
G Locked in Keyway Side position
H Locked out of Center and Keyway Side Position
J Locked out of Center and Opposite Keyway position
K Locked in Center and Opposite Keyway position
L Locked out of Keyway Side position
M Locked out of and into Opposite Keyway position
N Locked out of Opposite Keyway position
P Locked out of and into Keyway Side position
NOTE: ( ) denotes momentary action.
COMMERCIAL & MIL MINIATURE TOGGLES
MINIATURE
TOGGLES
T3
MEETS MIL-DTL-83731, COMMERCIAL & MILITARY GRADES
181 OTTO Full Line Catalog Specifications Subject To Change Without Notice