Complete Assemblies
Key-Type Selector Switch
Install in 22-mm dia. or 25-mm dia.
Panel Cutout
H
Locking lever ensures easy mounting
and removal of switch unit
A22K
H
Increase wiring efficiency and decrease
mounting depth with three-row mounting
of switch unit contact blocks
H
Finger-safe contacts
H
Use optional 25-mm dia. ring to install
in 25-mm dia. panel cutouts
c
H
Install using either round, forked crimp
terminals, or ferrules
H
IP65 oil resistant: EN60947-5-1
This product was manufactured at OMRON Izumo. OMRON Izumo has obtained
approvals from international certification bodies for its quality system and environmental
control system.
Ordering Information
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CONSTRUCTION
Operational Unit
Number of Positions
•
2 Positions/3 Positions
Key Release Position
2 Positions
Lock Fitting
3 Positions
Switch Unit
•
Contacts
SPST-NO, SPST-NC, SPST-NO + SPST-NC, DPST-NO, DPST-NC
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A22K
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PART NUMBER LEGEND
Shipped as a set which includes the Operational Unit and Switch Unit with contact blocks.
1
2
A22K
A22K-j-j
1 Number of Positions/Reset Method
Code Positions
2ML
2M
2AL
3ML
3M
3MC
3AC
Spring return
Spring return
3 positions Maintained
Reset
method
Key release
position
Left
Left and right
Left
Left
Left and right
Center
Center
2 Contacts
Code Description
10
01
11
20
02
Note:
SPST-NO (*)
SPST-NC (*)
SPST-NO + SPST-NC
DPST-NO
DPST-NC
* for models with 2 Positions
2 positions Maintained
Note: SPST= Single Pole, Single Throw
DPST= Double Pole, Single Throw
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A22K
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KEY-TYPE SELECTOR SWITCH
Appearance
Positions
Operator type
Contacts
Key release
position
Color of
Operational
Unit
Black
A22K
Part number
Key-type selector switch
2 positions
Maintained
SPST-NO
A22K-2ML-10
A22K-2M-10
SPST-NC
A22K-2ML-01
A22K-2M-01
SPST-NO +
SPST NC
SPST-NC
A22K-2ML-11
A22K-2M-11
DPST-NO
A22K-2ML-20
A22K-2M-20
DPST-NC
A22K-2ML-02
A22K-2M-02
Spring return
p g
SPST-NO
SPST-NC
SPST-NO +
SPST-NC
DPST-NO
DPST-NC
A22K-2AL-10
A22K-2AL-01
A22K-2AL-11
A22K-2AL-20
A22K-2AL-02
A22K-3ML-11
A22K-3M-11
A22K-3MC-11
3 positions
Maintained
SPST-NO +
SPST NC
SPST-NC
DPST-NO
A22K-3ML-20
A22K-3M-20
A22K-3MC-20
DPST-NC
A22K-3ML-02
A22K-3M-02
A22K-3MC-02
Spring return
SPST-NO +
SPST-NC
DPST-NO
DPST-NC
A22K-3AC-11
A22K-3AC-20
A22K-3AC-02
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A22K
A22K
Dimensions
Unit: mm (inch)
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KEY-TYPE SELECTOR SWITCH
A22K
30 dia.
(1.18)
34
(1.34)
25.5
(1.00)
23.7
(0.93)
12
(0.47)
54.7
(2.15)
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TERMINAL ARRANGEMENT
Terminal Arrangement (Bottom View)
Non-illuminated (SPST-NO + SPST-NC)
20.7
(0.81)
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TERMINAL CONNECTION
Type
Non-illuminated
Terminal connection
Bottom view
16.7
(0.66)
Note: The above terminal connection diagrams are examples for
SPST-NO + SPST-NC.
Switch Unit
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PANEL CUTOUT DIMENSIONS
22.3
+0.4
dia.
0
25
+0.5
dia.
0
Note: When applying a coating such as paint to a panel, the
dimensions should be those after the application of the
coating.
A lock fitting is provided as a standard item.
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A22K
A22K
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CONTACT CONFIGURATION
2-Position Type
Knob position
SPST-NO
SPST-NC
SPST-NO +
SPST-NC
DPST-NO
DPST-NC
3-Position Type
Knob position
SPST-NO + SPST-NC
DPST-NO
DPST-NC
Note: For additional specifications and information refer to the
Common to all assemblies
section at the end of this publication.
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