MICRO SWITCH Miniature Military-Grade Toggle Switch
TW Series
005431
Datasheet
Issue 2
FEATURES
• MIL-DTL-83731 qualified switches are available to meet
military/aerospace specifications
• 1- and 2- pole options along with 2- and 3-position,
maintained and momentary toggle action
• Wide temperature range: -65 °C to 71 °C [-85 °F to 160 °F]
• 1/4 in and 15/32 in bushing diameters
• Standard, locking, & colored paddle levers
• Optional lever locks (pull-to-unlock) require two separate
actions to actuate
• Three popular termination options: screw, solder, and IWTS
(Integrated Wire Termination System)
• Silver alloy or gold-plated contacts
• Electrical endurance of 20,000 cycles at full load
DESCRIPTION
Honeywell MICRO SWITCH TW Series toggle switches are
military qualified to MIL-83731 specifications for sealed
and unsealed toggle switches. Quality construction features
include an available bonded seal between the toggle lever and
bushing for those applications where a sealing-related failure
cannot be tolerated.
The durable design of the TW Series toggle is well-suited for
many military, aerospace and other demanding applications
where space behind the panel is limited. These applications
include environments where the panels are subjected to
mechanical shock, vibration, dust, splashing or hose-directed
water, and temperature extremes.
MICRO SWITCH TW toggles feature a miniature military-
grade design with environmental sealing capabilities and can
be configured with a large selection of circuitries, electrical
terminations, lever and bushing designs, and contact material
options to satisfy a diverse range of applications.
POTENTIAL INDUSTRIAL APPLICATIONS
•
•
•
•
•
Military and commercial aircraft and helicopters
Aviation ground support equipment
Military land vehicles (track and wheeled vehicles)
Industrial machinery and construction equipment
Process control
DIFFERENTIATION
• Miniature size saves space and weight
• Variety of terminations, circuitries, and lever options for a
number of applications
PORTFOLIO
In addition the the TW Series, Honeywell offers six series of
MICRO SWITCH toggle switches including the
TL Series, NT
Series, TS Series, ET Series,
and
AT Series.
VALUE TO CUSTOMERS
• MIL-DTL-83731 qualified switches available to meet military
specifications
• Environmental sealing availability enables switches to
withstand many demanding indoor and outdoor applications
• Miniature size (small footprint) for applications where
behind-the-panel space is at a minimum
• 2- and 3-position, maintained and momentary toggle action
to meet circuit and actuator requirements
Safety and Productivity Solutions
MICRO SWITCH Miniature Military-Grade Toggle Switch, TW Series
Table 1. Specifications
Characteristic
Description
Sealing
Operating temperature
Actuators
Action
Mounting
Circuitry
Terminations
Contacts
Amp rating
Approvals
Measurement
Parameter
miniature military-grade toggle switch
qualified to MIL-DTL-83731
-65 °C to 71 °C [-85 °F to 160 °F]
standard, locking, special design, paddle
2- or 3- position; momentary and maintained
bushing 15/32 in (0.47 in) Ø; 1/4 in (0.25 in) Ø
SPDT, DPDT, SPST, DPST
IWTS, solder (T and T2), quick connect (H58)
fine silver or gold-plated
0.1 A to 5.0 A @ 0.5 Vdc to 28 Vdc
0.1 A to 5.0 A @ 0.5 Vac to 115 Vac
UL, qualified to MIL-DTL-83781
49,78 mm H x 14,61 mm W x 14,61 mm D [1.96 in H x 0.575 in W x 0.575 in D]
Table 2. Electrical Ratings (in amperes)
Volts
30 Vdc
115 Vac
UL Code 117
Resistive
5
5
5 A @ 125 Vac
Inductive
2
2
Lamp
1
1
TERMINAL CIRCUIT IDENTIFICATION
Terminal identifications are referred to in the order guides to
indicate which circuits are made in each toggle position (i.e.,
1-2 refers to circuit closure through terminals 1 and 2).
One Pole
Two Pole
SPECIAL CIRCUITRIES
Catalog listings with -10, -50, and -70 suffix numbers, as
shown in the order guides, have special “on-on-on” circuits, as
illustrated below.
-10 CIRCUITRY
No of
poles
2
Keyway Side Maint.
Position
Center Maint.
Position
Opposite Keyway
Maint. Position
TERMINALS
In addition to the solder terminal listings in the order guides,
IWTS (Integrated Wire Termination System) and quick connec-
tion versions are also available.
IWTS provides a reliable, serviceable unit and promotes main-
tainability since wiring bundles need not be disturbed. Leads
are quickly and easily assembled or removed with an insert-ex-
tract tool. A unique three-rib (grommet style) elastomer seal
protects the lead connections without potting. There are no
exposed metal terminals. Versions available that will accept
No. 20 wire with MS39029/1-101 contact pins. Connections
are resistant to shock, vibration, and high pull-out force.
-50 CIRCUITRY
No of
poles
2
Keyway Side Maint.
Position
Center Maint.
Position
Opposite Keyway
Maint. Position
-70 CIRCUITRY
No of
poles
2
Keyway Side Maint.
Position
Center Maint.
Position
Opposite Keyway
Maint. Position
2
sensing.honeywell.com
MICRO SWITCH Miniature Military-Grade Toggle Switch, TW Series
TW SERIES TWO-POSITION ORDER GUIDE
Table 3. Two-Position TW Series with 15/32 in Bushing
Circuits Made with
Toggle At:
No. of
poles
1
Sealed Standard Toggle
Pull-to-Unlock Toggle
Add
Suffix to
Standard
Toggle
Listing
D
D, F, G
D, F, G
F
D, F, G
F
D, F, G
D, F, G
F
D, F, G
F
Colored Pad-
dle Lever***
Add Paddle
Color Suffix
to _
11TW19-2_
11TW19-3_
11TW19-8_
–
–
12TW19-2_
12TW19-3_
12TW19-8_
–
–
Terminals
Keyway
Position
Opposite
Keyway
Catalog
Listing
Military
Number
Military
Number**
solder
solder
solder
IWTS
ITWS
OFF
2-1 ON
2-1 ON*
2-1 ON
2-1 ON*
OFF
2-1, 5-4 ON
2-1, 5-4 ON*
2-1, 5-4 ON
2-1, 5-4 ON*
2-3 ON
2-3 ON
2-3 ON
2-3 ON
2-3 ON
2-3, 5-6 ON
2-3, 5-6 ON
2-3, 5-6 ON
2-3, 5-6 ON
2-3, 5-6 ON
11TW1-2
11TW1-3
11TW1-8
111TW1-3
111TW1-8
12TW1-2
12TW1-3
12TW1-8
112TW1-3
112TW1-8
MS27718-22-1
MS27718-23-1
MS27718-26-1
–
–
MS27719-22-1
MS27719-23-1
MS27719-26-1
–
–
MS27720-22-1
MS27720-23-1
MS27720-26-1
–
–
MS27721-22-1
MS27721-23-1
MS27721-26-1
–
–
2
solder
solder
solder
IWTS
IWTS
* These positions are momentary. All others are maintained.
** Also add the appropriate suffix to the military number.
*** See page 8 for paddle lever colors
D
See page 8 for locking configurations.
Table 4. Two-Position TW Series with 1/4 in Bushing
Circuits Made with Toggle At:
No. of
poles
1
Unsealed Standard Toggle
Catalog Listing
Military Number
Sealed Standard Toggle
Catalog Listing
Terminals
Keyway Position
Opposite
Keyway
2-3 ON
2-3 ON
2-3 ON
2-3, 5-6 ON
2-3, 5-6 ON
2-3, 5-6 ON
solder
solder
solder
OFF
2-1 ON
2-1 ON*
OFF
2-1, 5-4 ON
2-1, 5-4 ON*
1TW1-2
1TW1-3
1TW1-8
2TW1-2
2TW1-3
2TW1-8
MS27716-22-1
MS27716-23-1
MS27716-26-1
MS27717-22-1
MS27717-23-1
MS27717-26-1
1TW101-2
1TW101-3
1TW101-8
2TW101-2
2TW101-3
2TW101-8
2
solder
solder
solder
* These positions are momentary. All others are maintained.
PULL-TO-UNLOCK OPTION
When ordering pull-to-unlock toggle listings (See page 8 for configurations), add the suffix letter shown in the chart on page 11 to the standard
toggle listing or the MS part number. For example, to order a 11TW1-2 pull-to-unlock toggle switch with the lever locked out of the center position,
Safety and Productivity Solutions
3
MICRO SWITCH Miniature Military-Grade Toggle Switch, TW Series
add the letter
D
(i.e., 11TW1-2D, MS27718-22-1D)
TW SERIES THREE-POSITION ORDER GUIDE
Table 5. Three-Position TW Series with 15/32 in Bushing
Circuits Made with Toggle At:
Sealed Standard Toggle
Pull-to-Unlock Toggle
Add
Suffix to
Standard
Toggle
Listing
D
ALL
E, F, K, L,
M, N
E, L, N
ALL
E, F, K, L,
M, N
E, L, N
ALL
E, F, K, L,
M, N
E, L, N
ALL
E, F, K, L,
M, N
E, L, N
Colored Pad-
dle Lever***
Add Paddle
Color Suffix
to _
11TW19-1_
11TW19-5_
11TW19-7_
–
–
–
12TW19-1_
12TW19-5_
12TW19-7_
–
–
–
No. of
poles
1
Term-
inals
solder
solder
solder
IWTS
IWTS
IWTS
Keyway
Position
2-1 ON
2-1 ON*
2-1 ON*
2-1 ON
2-1 ON*
2-1 ON*
2-1, 5-4 ON
2-1, 5-4 ON*
2-1, 5-4 ON*
2-1, 5-4 ON
2-1, 5-4 ON*
2-1, 5-4 ON*
Center
Position
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
Opposite
Keyway
2-3 ON
2-3 ON
2-3 ON*
2-3 ON
2-3 ON
2-3 ON*
2-3, 5-6 ON
2-3, 5-6 ON
2-3, 5-6 ON*
2-3, 5-6 ON
2-3, 5-6 ON
2-3, 5-6 ON*
Catalog
Listing
11TW1-1
11TW1-5
11TW1-7
111TW1-1
111TW1-5
111TW1-7
12TW1-1
12TW1-5
12TW1-7
112TW1-1
112TW1-5
112TW1-7
Military
Number
MS27718-21-1
MS27718-31-1
MS27718-26-1
–
–
–
MS27719-21-1
MS27719-31-1
MS27719-27-1
–
–
–
Military
Number**
MS27720-21-1
MS27720-31-1
MS27720-27-1
–
–
–
MS27721-21-1
MS27721-31-1
MS27721-27-1
–
–
–
2
solder
solder
solder
IWTS
IWTS
IWTS
* These positions are momentary. All others are maintained.
** Also add the appropriate suffix to the military number.
*** See page 8 for paddle lever colors
D
See page 8 for locking configurations.
Table 6. Three-Position TW Series with 1/4 in Bushing
Circuits Made with Toggle At:
No. of
poles
1
Unealed Standard Toggle
Catalog
Listing
1TW1-1
1TW1-5
1TW1-7
2TW1-1
2TW1-5
2TW1-7
Sealed Standard Toggle
Catalog Listing
1TW101-1
1TW101-5
1TW101-6
2TW101-2
2TW101-3
2TW101-8
Keyway
Position
2-1 ON
2-1 ON*
2-1 ON*
Center
Position
OFF
OFF
OFF
OFF
OFF
OFF
Opposite
Keyway
2-3 ON
2-3 ON
2-3 ON*
2-3, 5-6 ON
2-3, 5-6 ON
2-3, 5-6 ON*
Military
Number
MS27716-21-1
MS27716-31-1
MS27716-27-1
MS27717-21-1
MS27717-31-1
MS27717-26-1
2
2-1, 5-4 ON
2-1, 5-4 ON*
2-1, 5-4 ON*
* These positions are momentary. All others are maintained.
PULL-TO-UNLOCK OPTION
When ordering pull-to-unlock toggle listings (See page 8 for configurations), add the suffix letter shown in the chart on page 11 to the standard
toggle listing or the MS part number. For example, to order a 11TW1-7 pull-to-unlock toggle switch with the lever locked in the center position,
add the letter
E
(i.e., 11TW1-7E, MS27720-27-1E)
4
sensing.honeywell.com
MICRO SWITCH Miniature Military-Grade Toggle Switch, TW Series
Table 7. TW Series Switches with Special Circuitries
All two-pole, three-position TW switches are available with special “on-on-on”
-10, -50, -70
circuitry options as shown below.
Unsealed
Standard
Toggle
Circuits Made with Toggle At:
Sealed Standard Toggle
15/32
Bushing
Catalog
Listing
12TW1-10
12TW1-50
12TW1-70
Sealed
Paddle Lever
15/32
Bushing
Catalog
Listing***
12TW19-10_
12TW19-50_
12TW19-70_
No. of
poles
2
Terminals
Keyway
Position
Center
Position
Opposite
Keyway
1/4 Bushing
Catalog
Listing
2TW101-10
2TW101-50
2TW101-70
1/4 Bushing
Catalog
Listing
2TW1-10
2TW1-50
2TW1-70
solder
solder
solder
2-1, 5-4 ON
2-1, 5-4 ON*
2-1, 5-4 ON*
2-1, 5-6 ON
2-1, 5-6 ON
2-1, 5-6 ON
2-3, 5-6 ON
2-3, 5-6 ON
2-3, 5-6 ON*
* These positions are momentary. All others are maintained.
*** Add color suffix from Table 8 on page 11.
Safety and Productivity Solutions
5
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