MICRO SWITCH™ Commercial-Grade Toggle Switches
AT Series
005435
Datasheet
Issue 1
FEATURES
• Assemblies available as MIL-PRF-8805 qualified or the
individual basic switches with UL, CSA, and CE certification
• 2- or 3-position, momentary and maintained action
• Up to 10 SPDT precision basic switches
• Short behind-panel depth
• Choice of 1⁄4- or 15/32-inch bushings
• Silver or gold contacts
• Lever lock options
• Toggle lever and panel seal options
• Electrical connections: screw, solder, quick connect (blade),
and preleaded
DESCRIPTION
Honeywell’s MICRO SWITCH™ AT toggle switches provide
a compact multi-pole toggle switch with a long history of
successful performance, exceeding 50 years. The AT Toggle
Switch Series is available as a 1-, 2-, 3-, 4-, 6-, 8-, or 10-pole
design for a wide range of applications with a metal toggle
lever, metal bushing, and metal housing for durability. Select AT
Series are qualified to MIL-PRF-8805 for military applications.
For applications which do not require a military approved switch,
there are other AT Series switches for commercial and industrial
applications.
Options for the AT Series include panel seals and lever-to-
bushing seals. These options enhance product performance
where environments of dust or water spray could be present in
the application. Complementing the product offering, MICRO
SWITCH™ AT toggle switch assemblies are available with
individual poles (basic switches) which are UL, CSA, and CE
certified.
POTENTIAL APPLICATIONS
• Aircraft (commercial and military)
• Military ground vehicles
• Flight controls
• Vehicle panel controls
PORTFOLIO
Honeywell offers six series of MICRO SWITCH™ toggle switches
including the
TL Series, NT Series, TS Series, TW Series,
and
ET
Series.
VALUE TO CUSTOMERS
• Multi-pole, multi-throw circuitry (up to 10 pole) for controlling
independent circuits or providing redundant circuit capability
• Flexible insulators between poles minimize electrical bridging
• MIL-PRF-8805 qualified switches
• Reduces service costs
• Extends equipment life
• Front of panel sealing available
DIFFERENTIATION
• Only manufacturer with 10-pole circuitry
• Utilizes proven and reliable snap-action switch design
Sensing and Productivity Solutions
MICRO SWITCH™ Commercial-Grade Toggle Switches, AT Series
Table 1. Specifications
Characteristic
Description
Actuators
Lever action
Mounting
Bushing
Termination
Contact material
Electrical rating
Electrical endurance
(commercial grade)
Electrical endurance
(military qualified)
Sealing
Operating temperature
Approvals
Parameter
Commercial-grade toggle switch; military-qualified toggle switches available
Standard lever, locking lever, tab lever, special lever
2- or 3-position with maintained or momentary action
Panel mount threaded bushing; Ø 1/4 in [0.25] or 15/32 in [0.47]
Ø 1/4 in [0.25 in] bushing 1-, 2-, or 3-single pole double throw (SPDT) basics;
Ø15/32 in [0.47 in] bushing 2-, 4-, 6-, 8-, or 10-single pole double throw (SPDT) basics
Solder thru-hole; solder single turret; solder double turret; screw; quick-connect blade; pre-leaded
Silver alloy or gold-plated silver alloy
30 Vdc; 125 Vac; 250 Vac (See Tables 2 & 3)
6,000 cycles min.
25,000 cycles min.
Unsealed; lever-to-bushing seal; panel seal & lever-to-bushing seal
-55 °C to 85 °C [-67 °F to 185 °F]
Available as MIL-PRF-8805; or UL, CSA, CE [individual basic switches]
Select catalog listings with FAA-PMA
Table 2.
6AT/13AT/23AT Series with MICRO SWITCH™ SM type basic switch electrical ratings (amps)
Supply voltage
(contact material)
UL/CSA/CE
rating for
SM basic switch
Sea Level
Inrush @ 30
Vdc [max.]
Resistive
Inductive
Inrush @
30 Vdc max.
Altitude 50,000 ft
Resistive
Inductive
30 Vdc
(silver contacts)
30 Vdc
(gold contacts)
125 Vac, UL/CSA
250 Vac, CE
(gold contacts)
250 Vac
(silver contacts)
–
–
1
5
24
2
–
–
5
1
–
–
3
0.5
–
–
24
2
–
–
5
1
–
–
2.5
0.5
–
–
Table 3. 60AT Series with MICRO SWITCH™ SX type basic switch electrical ratings (amps)
Supply voltage
(contact material)
UL/CSA/CE
rating for
SX basic switch
Sea Level
Resistive
Inductive
Altitude 50,000 ft
Resistive
Inductive
28 Vdc
(silver contacts)
115 Vac, 60 Hz
(silver contacts)
250 Vac
(silver contacts)
–
–
7
7
7
–
4
7
–
4
–
–
2.5
–
–
2
sensing.honeywell.com
MICRO SWITCH™ Commercial-Grade Toggle Switches, AT Series
Figure 1. MICRO SWITCH™ AT Series Locking Configurations
TERMINAL CIRCUIT IDENTIFICATION
(BOTTOM VIEW)
Terminal markings (electrical connections) are identified in the
order guide section with a C (for common), NC (for normally
closed), and NO (for normally open). In addition, the poles (basic
switches) of the AT toggle switch are identified with a number
marked on the end of the basic switch (i.e. a four pole switch will
have each pole (basic switch) marked 1, 2, 3, or 4 on the end of
each basic switch.
Figure 2. 6AT Series with 1PDT, 2PDT, or 3PDT
Figure 5. 62AT Series (2PDT)
2-Pole
Keyway
1
2
NC • NO • C
NC • NO • C
Figure 6. 64AT Series (4PDT)
Key-
1
way
2
NC • NO • C
NC • NO • C
3
4
C • NO • NC
C • NO • NC
Figure 7. 66AT Series (6PDT)
1-Pole
Key tab or
keyway
C • NO • NC
2-Pole
C • NO • NC
C • NO • NC
3-Pole
C • NO • NC
C • NO • NC
C • NO • NC
1
Key-
2
way
3
NC • NO • C
NC • NO • C
NC • NO • C
4
5
6
C • NO • NC
C • NO • NC
C • NO • NC
Figure 8. 68AT Series (8PDT)
1
Figure 3. 13AT Series with 2PDT, 3PDT, or 4PDT
NC • NO • C
NC • NO • C
NC • NO • C
NC • NO • C
5
6
7
8
C • NO • NC
C • NO • NC
C • NO • NC
C • NO • NC
2-Pole
2
Key-
1
way
C • NO • NC
NC • NO • C
3
2
1
3-Pole
NC • NO • C
C • NO • NC
NC • NO • C
4
3
2
1
4-Pole
NC • NO • C
C • NO • NC
C • NO • NC
NC • NO • C
Key-
2
way
3
4
Figure 4. 23AT Series with 2PDT, 3PDT, or 4PDT
2-Pole
C • NO • NC
Keyway
C • NO • NC
3-Pole
C • NO • NC
C • NO • NC
C • NO • NC
4-Pole
C • NO • NC
C • NO • NC
C • NO • NC
C • NO • NC
Sensing and Productivity Solutions
3
MICRO SWITCH™ Commercial-Grade Toggle Switches, AT Series
13AT SERIES THREE-POSITION ORDER GUIDE
Table 4. Three-Position 13AT Series
Toggle Lever Position
Standard Lever
Solder
Termination
No Suffix
Contact
(thru-hole), -T
Material
Suffix (turrent),
-T2 Suffix
(double turrent)
Silver
13AT2,
13AT2-T
Metal Tab
Lever
Solder
Termination
with -T2
Suffix (double
turrent)
Pull-to-unlock
Lever
Add Lever
Lock Suffix to
Cat. Listing
Below
No. of
Poles/
Basic
Switches
Keyway
Center
Opposite
Keyway
Lever-
Lock
Suffix
1
2
Pole 1, C-NC
Pole 2, C-NO
Both
Poles,
C-NC
Both
Poles,
C-NC
Pole 1, C-NO
Pole 2, C-NC
13AT402-T2
13AT2-
All lever
lock
types
Lever
lock
types
E, G,
B, L, N,
or
P
Lever
lock
types
E,
L,
or
N
Lever
lock
types
E,
L,
or
N
All lever
lock
types
Lever
lock
types
E, G,
B, L, N,
or
P
Lever
lock
types
E,
L,
or
N
2
Pole 1, C-NC
Pole 2, C-NO
Pole 1*, C-NO
Pole 2*, C-NC
Silver
13AT3
–
–
2
Pole 1*, C-NC
Pole 2*, C-NO
Both
Poles,
C-NC
Both
Poles,
C-NC
All Poles,
C-NC
Pole 1*, C-NO
Pole 2*, C-NC
Silver
13AT1,
13AT1-T
13AT401-T2
13AT1-
2
Pole 1*, C-NC
Pole 2*, C-NO
Pole 1, C-NC
Pole 2, C-NO
Pole 3, C-NO
Pole 4, C-NC
Pole 1, C-NC
Pole 2, C-NO
Pole 3, C-NO
Pole 4, C-NC
Pole 1*, C-NC
Pole 2*, C-NO
Pole 3*, C-NO
Pole 4*, C-NC
Pole 1*, C-NO
Pole 2*, C-NC
Pole 1, C-NO
Pole 2, C-NC
Pole 3, C-NC
Pole 4, C-NO
Pole 1*, C-NO
Pole 2*, C-NC
Pole 3*, C-NC
Pole 4*, C-NO
Pole 1*, C-NO
Pole 2*, C-NC
Pole 3*, C-NC
Pole 4*, C-NO
Gold
13AT26
–
–
4
Silver
13AT9-T2
–
13AT9-
4
All Poles,
C-NC
Silver
13AT10
–
–
4
All Poles,
C-NC
Silver
13AT8
–
13AT8-
* These positions are momentary. All other positions are maintained
C = Common Terminal; NC = Normally Closed Terminal; NO = Normally Open Terminal
1
See page 3 for lever lock configurations
4
sensing.honeywell.com
MICRO SWITCH™ Commercial-Grade Toggle Switches, AT Series
13AT SERIES THREE-POSITION ORDER GUIDE
Table 5. Three-Position MIL-PRF-8805 13AT Catalog listings
Toggle Lever Position
No. of
Poles/
Basic
Switches
2
Standard Lever
Solder Termination
-T2 Suffix (double
turrent)
Contact
Material
Catalog
Listing
Military
Part
Number
M8805/26-
007
Metal Tab Lever
Solder Termination
-T2 Suffix (double
turrent)
Catalog
Listing
Military
Part
Number
Pull-to-Unlock Lever
1
Keyway Center
Pole 1,
C-NC
Pole 2,
C-NO
Pole 1,
C-NC
Pole 2,
C-NO
Pole 1*,
C-NC
Pole 2*,
C-NO
Pole 1,
C-NC
Pole 2,
C-NO
Pole 3,
C-NC
Opposite
Keyway
Pole 1,
C-NO
Pole 2,
C-NC
Pole 1*,
C-NO
Pole 2*,
C-NC
Pole 1*,
C-NO
Pole 2*,
C-NC
Pole 1*,
C-NO
Pole 2*,
C-NC
Pole 3*,
C-NO
Catalog
Listing
13AT272-
T2-A
13AT272-
T2-M
–
Military
Part
Number
M8805/92-
006
M8805/92-
014
–
Both
Poles,
C-NC
Both
Poles,
C-NC
Both
Poles,
C-NC
Silver
13AT272-T2
–
–
2
Silver
13AT273-T2
M8805/26-
009
–
–
2
Silver
13AT271-T2
M8805/26-
M8805/26-
13AT471-T2
005
006
13AT271-
T2-E
M8805/92-
005
3
All
Poles,
C-NC
Silver
13AT275-T2
M8805/26-
M8805/26-
13AT475-T2
013
014
–
–
* These positions are momentary. All other positions are maintained
C = Common Terminal; NC = Normally Closed Terminal; NO = Normally Open Terminal
1
See page 3 for lever lock configurations
Sensing and Productivity Solutions
5
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