KG/KH Series Miniature Key Lock Switches
Miniature, cylindrical, unibody key lock switches for mounting in 19 mm oval hole
Metal housing, and high-performance microswitch contacts
Space-saving design: Panel depth: 29.9 mm (KG series) /
KG KH
39.5 mm (KH series)
Reliable and smooth operation
Silver or gold contacts
Reversible key (non-directional key)
Two keys are supplied.
For the KH series, different keys (different key nos.) are
available (made to order).
Master key is not available.
KG/KH Series
Operator Position and Contact Operation
Part No.
(Top View)
No. of
Series Position
Key Retained at
Contacts
No. of
Silver Contact Gold Contact Left Center Right
Contacts
NO NC NO NC
SPDT KG2C-10A KG2C-11A
LR
A
DPDT KG2C-20A KG2C-21A SPDT
SPDT KG2C-10B KG2C-11B
L R C1 C1
90 2-Position Maintained B
Left Right Left Right
DPDT KG2C-20B KG2C-21B Contact Contact
Contact Contact
NO NC NO NC NO NC NO NC
SPDT KG2C-10C KG2C-11C DPDT
L R
C
DPDT KG2C-20C KG2C-21C C1 C2 C1 C2
C
L
R
A DPDT KG3C-20A KG3C-21A
C
L
R
B DPDT KG3C-20B KG3C-21B
KG
C
L
R
Left Right Left Right Left Right
C DPDT KG3C-20C KG3C-21C
Contact Contact
Contact Contact Contact Contact
NO NC NO NC
NO NC NO NC NO NC NO NC
C
L R
45 3-Position Maintained D DPDT KG3C-20D KG3C-21D DPDT
C C1 C2 C1 C2 C1 C2
L R
E DPDT KG3C-20E KG3C-21E
C
L
R
G DPDT KG3C-20G KG3C-21G
C
L
R
H DPDT KG3C-20H KG3C-21H
NO NC NO NC
SPDT KH2C-10A KH2C-11A
LR
A
DPDT KH2C-20A KH2C-21A SPDT
SPDT KH2C-10B KH2C-11B
C1 C1
L R
90 2-Position Maintained B
Left Right Left Right
DPDT KH2C-20B KH2C-21B Contact Contact Contact Contact
NO NC NO NC NO NC NO NC
SPDT KH2C-10C KH2C-11C DPDT
L R
C
DPDT KH2C-20C KH2C-21C
C1 C2 C1 C2
C
L
R
A DPDT KH3C-20A KH3C-21A
C
L
R
B DPDT KH3C-20B KH3C-21B
KH
C
L R
Left Right
Left Right Left Right
C DPDT KH3C-20C KH3C-21C
Contact Contact Contact Contact
Contact Contact
NO NC NO NC
NO NC NO NC NO NC NO NC
C
L R
45 3-Position Maintained D DPDT KH3C-20D KH3C-21D DPDT
C C1 C2 C1 C2 C1 C2
L
R
E DPDT KH3C-20E KH3C-21E
C
L
R
G DPDT KH3C-20G KH3C-21G
C
L
R
H DPDT KH3C-20H KH3C-21H
Two keys are supplied. (For ordering spare keys, see page 175.)
For the KH series, different keys (different key nos.) are available (made to order). Master key is not available.
Different keys (different key nos.) are not available for KG series.
174KG
KD
KH
KG/KH Series Miniature Key Lock Switches
Speci cations Contact Ratings (Microswitch)
Flush
Operating temperature: -25 to +50C (no freezing) Insulation Voltage 125V Silhouette
Standard Operating
Storage temperature: -30 to +70C (no freezing)
Conditions Thermal Current 3A
Operating humidity: 45 to 85% RH (no condensation)
Silver contact microswitch: Switches &
Contact Resistance 50 m maximum (initial value)
Pilot Lights
125V AC, 1A (resistive load)
Operating Voltage &
Insulation
30V DC, 1A (resistive load)
100 M minimum (500V DC megger)
Current
Resistance
Gold contact microswitch:
Display
30V DC, 0.1A (resistive load)
Between live and dead parts:
Lights
2,500V AC, 1 minute
Operating Frequency 1,800 operations/hour
Dielectric Strength
Between live parts of different poles:
LED
Minimum applicable load (reference value): Gold contact microswitch 24V
1,000V AC, 1 minute
Illumination
AC/DC, 1 mA
Units
Mechanical Life 50,000 operations minimum
Electrical Life 30,000 operations minimum
Display
Panel Cut-out Terminal Arrangement (Bottom View)
Vibration Damage Limits/Operating Extremes: 5 to 55 Hz,
Units
0.2
(TOP) (TOP)
Resistance amplitude 0.5 mm 19.3
2
Damage Limits: 1,000 m/s
Shock Resistance
2 Safety
Operating Extremes: 100 m/s
Products
C C
C
Solder terminal
Terminal Style 2
(Connectable wire: 0.75 mm 2 wires max.)
NO NO
NO
Terminal
Degree of Protection IP40 (IEC 60529)
Blocks
Housing Color Chrome-plated (metallic)
NC NC
+0.1 NC
16.2
Weight KG series: 30g, KH series: 40g (excluding key) -0.2
Comm.
Terminals
Dimensions SPDT DPDT
Top marking
AS-Interface
KG
24.9
2 (Key dimensions)
Relays &
Timers
Sockets
25
3.9 24.0
Circuit
22
Key
Protectors
Ordering No.: KG9Z-SK-231PN02
Terminal dimensions: terminal width 2.2
Package Quantity: 2 (2.0 mm thick, Material: Nickel-plated brass)
Power
Top marking
KH
Supplies
34.5
(Key dimensions)
2
PLCs &
SmartRelay
Operator
Interfaces
25
3.9 33.6
Sensors
22
Spare Key
Ordering No.: KH9Z-SK-H100PN02
Terminal dimensions: terminal width 2.2
Package Quantity: 2 (2.0 mm thick, Material: Nickel-plated brass)
Control
Stations
Safety Precautions
Explosion
Protection
Turn off power to the switch before installation, removal, For wiring, use wires of proper size to meet the voltage
wiring, maintenance, and inspection. Failure to turn power and current requirements. Improper soldering may cause
off may cause electrical shocks or re hazard. overheating and re. References
Instructions
Notes on Panel Mounting Contacts
Use an optional locking ring wrench to mount the switch in When switching inductive loads, contact resistance is
a panel cut-out. Tightening torque should not exceed 2.94 increased by arcing. Therefore, it is recommended to con-
Nm. nect a contact protection circuit to ensure contact reliability.
When using NO and NC contacts of the same microswitch,
Wiring
avoid connections of different voltages, or connections of
Solder the terminal at 350C within 3 seconds, using a
different types of power supplies. Failure to observe this
60W soldering iron. Sn-Ag-Cu solder is recommended.
instruction may cause a short-circuit.
When soldering, do not touch the switch housing with the
soldering iron. Also ensure that no tensile force is applied Different Keys (Different Key Nos.)
to the terminals. Do not bend the terminals or apply exces- If a key of a different No. is inserted, the switch does not
sive force to the terminals. work with normal operating force. However, if the switch
is forcively operated, or if the key is incompletely inserted,
Use a non-corrosive rosin ux.
the switch may operate.
175
NC NO C
NC NO C
NC NO C NC NO C
1.2
1.2
25
25
NC NO C
NC NO C
17
17
NC NO C