Automation Controls Catalog
AEQ (EQ)
Switches
Sliding contact
construction Switches
for Low-level Loads
FEATURES
• Handles low level load: 100 μA at 3
VDC to 100 mA 30 VDC
• Long stroke: For pin plunger type, it
maintains OT (Over Travel) with over
2.2 mm on the NO side and over 2.5
mm on the NC side.
• Since contact pressure does not
depend on the operation stroke, the
range of possible use over the entire
stroke is greatly increased.
• Silent operation construction with
sliding contact
• Protection grade: IP40
TYPICAL
APPLICATIONS
• Household appliances
(Air conditioners, Air purifiers, Crime
prevention devices, etc.)
ORDERING INFORMATION
AEQ1
Size of mounting hole
0: Mounting hole 3 mm standard type
1: Mounting hole 3 mm without boss type
Terminal
4: Solder
terminal
5: PC board
terminal
Contact form
1: SPDT
Actuator
0: Pin plunger
7: Leaf lever
8: Simulated leaf lever
COM
NO NC
PRODUCT TYPES
■ Terminal type (Mounting hole: 3mm standard type / 3mm without boss type)
Actuator
Pin plunger
Leaf lever
Simulated leaf lever
2019.03
Operating Force OF, Max.
1.2N
1.7N
1.5N
industrial.panasonic.com/ac/e/
Mounting hole: 3mm standard type
Solder terminal
AEQ10410
AEQ10417
AEQ10418
1
Mounting hole: 3mm without boss type
PC board terminal
AEQ11510
AEQ11517
AEQ11518
© Panasonic Corporation 2019
AECTB14E 201903
AEQ (EQ) Subminiature Switches
SPECIFICATIONS
■ Contact rating
100 μA 3 VDC to 100 mA 30 VDC.
[Min. switching capacity (Reference value*) 10 μA 1 VDC]
* This value is a rough indication of the lowest possible low level load at which switching is possible.
This value can change due to the switching frequency, environmental conditions, and desired reliability level, therefore it is recommended to check this with the actual load.
■ Operation environment and conditions
Item
Ambient and storage temperature
Allowable operating speed
Max. operating cycle rate
Specifications
–25°C to +85°C (no freezing and condensing)
30 to 500 mm/sec.
120 cpm
Note 1: When switching at low and high speeds or under vibration, or in high-temperature, high-humidity environments, life and performance may be reduced significantly
depending on the load capacity. Please consult us.
Note 2:
Humidity, %RH
95
Tolerance range
50
(Avoid freezing
when used at
temperatures
lower than 0°C)
5
–25
(Avoid
condensation
when used at
temperatures
higher than 0°C)
0
Temperature, °C
85
■ Electrical characteristics
Dielectric strength (Initial)
Insulation resistance (Initial)
Contact resistance (Initial)
Between non-continuous terminals: 600 Vrms, Between each terminal and other exposed metal parts: 1,500 Vrms,
Between each terminal and ground: 1,500 Vrms (at detection current of 1 mA)
Min. 100 MΩ (at 500 V DC insulation resistance meter, Locations measured same as breakdown voltage.)
Max. 1 Ω (by voltage drop 0.1 A, 6 to 8 V DC)
■ Characteristics
Item
Electrical
switching life
Specifications
3 V DC 0.1 mA (resistive load)
Min. 2 × 105
30 V DC 100 mA (resistive load)
Min. 105
Switching frequency: 20 times/min.
Conduction ratio: 1:1
Pushbutton operation speed: 100 mm/s
Pushbutton switching position: free position (FP) to total travel position (TTP)
Vibration resistance
(malfunction vibration resistance)
Single amplitude: 0.75 mm
Amplitude of vibration: 10 to 55 Hz (4 minutes cycle) Direction and time: 2 hours each in X, Y and Z directions
Shock resistance
(malfunction shock resistance)
Shock value: 294 m/s2
Direction and time: 3 times each in X, Y and Z directions
Vibration resistance endurance
Frequency of vibration: 33.3 Hz, Acceleration: 43.1 m/s2 Direction and time: 8 hours each in X, Y and Z directions
Terminal strength
Min. 6 N (to each direction, applied power at 1 minute) *Terminal deformation possible.
Salt spray resistance
Density of salt water: 5 % Temperature: 35°C each 100 hours
At free position (FP) and total travel position (TTP)
Heat and cold resistance
Humidity resistance
Unit weight
Protection grade
–45 to –40°C 48 hours
85 to 90°C 48 hours
40°C 95% R.H. 96 hours
Approx. 0.8 g
IP40
Note: As long as there are no particular designations, the following conditions apply to the test environment.
Ambient temperature: 5 to 35°C
Relative humidity: 25 to 85% R.H.
Air pressure: 86 to 106 kPa
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© Panasonic Corporation 2019
AECTB14E 201903
AEQ (EQ) Subminiature Switches
■ Operating characteristics
Characteristics
Operating Force (OF) Max. *Note 2
Total travel Force (TF) Max. (reference value)
From mounting boss and hole center line
Free Position (FP) Max.
From standoff
From mounting boss and hole center line
Operating Position on NC side
(OP) NC *Note 3
From standoff
From mounting boss and hole center line
Operating Position on NO side
(OP) NO *Note 4
From standoff
From mounting boss and hole center line
Release Position on NC side
(RP) NC *Note 5
From standoff
From mounting boss and hole center line
Release Position on NO side
(RP) NO *Note 6
From standoff
Over travel on NC side (OT) NC Min.
Over travel on NO side (OT) NO Min.
From mounting boss and hole center line
Total Travel Position (TTP)
(reference value)
From standoff
Unit
N
N
mm
mm
mm
mm
mm
mm
mm
mm
Pin plunger
1.2
(1.8)
9.2
13.4
8.7±0.3
12.9±0.3
8.4±0.3
12.6±0.3
8.8±0.3
13.0±0.3
8.5±0.3
12.7±0.3
2.5
2.2
(5.9)
(10.1)
Leaf lever
1.7
(3.1)
11.5
15.7
9.8±0.5
14.0±0.5
9.3±0.5
13.5±0.5
10.1±0.5
14.3±0.5
9.6±0.5
13.8±0.5
3.1
2.6
(6.2)
(10.4)
Simulated leaf lever
1.5
(2.8)
14.4
18.6
12.5±0.5
16.7±0.5
12.0±0.5
16.2±0.5
12.9±0.5
17.1±0.5
12.4±0.5
16.6±0.5
3.3
2.8
(8.7)
(12.9)
Notes: 1. The above indicates the characteristics when operating the pushbutton from the vertical direction.
2. Indicates operation load for NO contact to achieve ON status.
3. Indicates position for NC contact to achieve OFF status.
4. Indicates position for NO contact to achieve ON status.
5. Although there is some overlap in the range of the operating position (OP) on the NC and NO sides due to the tolerance, in actuality there is always an intermediate
OFF range (the NC and NO sides will never ON at the same time.)
6. Indicates position for NC contact to achieve ON status.
7. Indicates position for NO contact to achieve OFF status.
OPERATION CONCEPT DIAGRAM
DATA
TF
Operation load
OF
Operation
load
RF
0
RP(NC)
NC side
Contact force
OT(NC)
OP(NC)
0
(OFF)
100mA
Applicable range
0.1mA
Stroke
NO side
OT(NO)
RP(NO)
Range of possible use
Applicable current range (reference)
Standard (mounting boss and hole
center diameter or standoff)
Contact form: terminal type
TTP
OP(NO)
0
FP
DC 3V
30V
NC side
NO side
CONTACT FORM
COM
NO
NC
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© Panasonic Corporation 2019
AECTB14E 201903
AEQ (EQ) Subminiature Switches
DIMENSIONS
(Unit: mm) General tolerance: ±0.25
The CAD data of the products with a CAD Data mark can be downloaded from https://industrial.panasonic.com/ac/e/
■ Solder terminal; Mounting hole: 3mm, standard type
Pin plunger
External dimensions
FP 9.2 Max.
RP (NC) 8.8±0.3
OP (NC) 8.7±0.3
RP (NO) 8.5±0.3
OP (NO) 8.4±0.3
TTP (5.9)
C
0.
3
CAD Data
8.4±0.2
13.3±0.15
5.4±0.15
5.4
2.7
1.9 dia.
+0.1
3.0 −0
3.7
5.1
5.9
4.2
FP 13.4 Max.
RP (NC) 13.0±0.3
OP (NC) 12.9±0.3
RP (NO) 12.7±0.3
OP (NO) 12.6±0.3
TTP (10.1)
3.2±0.1
+0.3
+0
3.0 −0.1dia.
3.0 −0.2
8.3±0.1
1.5
0.4
1.2
2.0
4.1
4.53±0.15 4.53±0.15
Leaf lever
0.4
External dimensions
Operating Force (OF) Max.
Total travel Force (TF) Max. (reference value)
From mounting boss and
Free Position
hole center line
(FP) Max.
From standoff
From mounting boss and
Operating
Position on NC hole center line
side (OP) NC
From standoff
From mounting boss and
Operating
Position on NO hole center line
side (OP) NO
From standoff
From mounting boss and
Release
Position on NC hole center line
side (RP) NC
From standoff
From mounting boss and
Release
Position on NO hole center line
side (RP) NO
From standoff
Over travel on NC side (OT) NC Min.
Over travel on NO side (OT) NO Min.
From mounting boss and
Total Travel
hole center line
Position (TTP)
(reference value) From standoff
3
0.
C
5.4
2.7
8.4±0.2
5.4±0.15
3.3
1.9 dia.
)
8°
(1
14.0
0.5
1.2
5.1
5.9
FP 15.7 Max.
RP (NC) 14.3±0.5
OP (NC) 14.0±0.5
RP (NO) 13.8±0.5
OP (NO) 13.5±0.5
TTP (10.4)
0.2
FP 11.5 Max.
RP (NC) 10.1±0.5
OP (NC) 9.8±0.5
RP (NO) 9.6±0.5
OP (NO) 9.3±0.5
TTP (6.2)
CAD Data
13.3±0.15
3.7
4.2
+0.1
3.0 −0
3.2±0.1
+0.3
+0
3.0 −0.1dia.
3.0 −0.2
8.3±0.1
1.5
0.4
1.2
2.0
Simulated leaf lever
1.2N
(1.8N)
9.2mm
1.34mm
8.7±0.3mm
12.9±0.3mm
8.4±0.3mm
12.6±0.3mm
8.8±0.3mm
13.0±0.3mm
8.5±0.3mm
12.7±0.3mm
2.5mm
2.2mm
(5.9mm)
(10.1mm)
1.7N
(3.1N)
11.5mm
15.7mm
9.8±0.5mm
14.0±0.5mm
9.3±0.5mm
13.5±0.5mm
10.1±0.5mm
14.3±0.5mm
9.6±0.5mm
13.8±0.5mm
3.1mm
2.6mm
(6.2mm)
(10.4mm)
Note: When switching at high speed or under shock, lever endurance
may drop. Therefore, please be sure to conduct an endurance
evaluation under actual switching conditions.
0.4
4.1
4.53±0.15 4.53±0.15
Operating Force (OF) Max.
Total travel Force (TF) Max. (reference value)
From mounting boss and
Free Position
hole center line
(FP) Max.
From standoff
From mounting boss and
Operating
Position on NC hole center line
side (OP) NC
From standoff
From mounting boss and
Operating
Position on NO hole center line
side (OP) NO
From standoff
From mounting boss and
Release
Position on NC hole center line
side (RP) NC
From standoff
From mounting boss and
Release
Position on NO hole center line
side (RP) NO
From standoff
Over travel on NC side (OT) NC Min.
Over travel on NO side (OT) NO Min.
From mounting boss and
Total Travel
hole center line
Position (TTP)
(reference value) From standoff
External dimensions
Operating Force (OF) Max.
Total travel Force (TF) Max. (reference value)
From mounting boss and
Free Position
hole center line
(FP) Max.
From standoff
From mounting boss and
Operating
Position on NC hole center line
side (OP) NC
From standoff
From mounting boss and
Operating
Position on NO hole center line
side (OP) NO
From standoff
From mounting boss and
Release
Position on NC hole center line
side (RP) NC
From standoff
From mounting boss and
Release
Position on NO hole center line
side (RP) NO
From standoff
Over travel on NC side (OT) NC Min.
Over travel on NO side (OT) NO Min.
From mounting boss and
Total Travel
hole center line
Position (TTP)
(reference value) From standoff
C
0.
3
FP 14.4 Max.
RP (NC) 12.9±0.5
OP (NC) 12.5±0.5
RP (NO) 12.4±0.5
OP (NO) 12.0±0.5
TTP (8.7)
CAD Data
13.3±0.15
1.9 dia.
R2.0
15.0
0.5
+0.3
+0
1.2
2.0
4.53±0.15 4.53±0.15
3.0 −0.2
8.3±0.1
+0.1
1.2
3.0 −0
3.7
5.1
5.9
4.2
FP 18.6 Max.
RP (NC) 17.1±0.5
OP (NC) 16.7±0.5
RP (NO) 16.6±0.5
OP (NO) 16.2±0.5
TTP (12.9)
3.2±0.1
3.0 −0.1dia.
)
8°
(1
0.2
5
R0.
8.4±0.2
5.4±0.15
3.3
1.5
0.4
2.8
5.4
2.7
4.1
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0.4
4
1.5N
(2.8N)
14.4mm
18.6mm
12.5±0.5mm
16.7±0.5mm
12.0±0.5mm
16.2±0.5mm
12.9±0.5mm
17.1±0.5mm
12.4±0.5mm
16.6±0.5mm
3.3mm
2.8mm
(8.7mm)
(12.9mm)
Note: When switching at high speed or under shock, lever endurance
may drop. Therefore, please be sure to conduct an endurance
evaluation under actual switching conditions.
© Panasonic Corporation 2019
AECTB14E 201903
AEQ (EQ) Subminiature Switches
PC board terminal
+0.3
3.0−0.2
■ PC board terminal; Mounting hole: 3 mm, without boss type
Pin plunger
CAD Data
C
0.
2
0.9
5.08±0.15 5.08±0.15
PC board pattern
.1
+0 0
−
.0
1
CAUTIONS FOR USE
■Soldering conditions
The application of excessive heat upon
the switch when soldering can cause
degradation of switch operation.
Therefore, be sure to keep within the
conditions given below.
Manual soldering: use soldering irons
(Max. 350°C, within 3 seconds at each
terminal) capable of temperature
adjustment. This is to prevent
deterioration due to soldering heat. Care
should be taken not to apply force to the
terminals during soldering.
(More than one second interval is
required to apply heat at each terminal.)
Please consult us if you intend to use a
soldering iron that exceeds 60 W.
■Mounting
Please avoid use in which load would be
applied to the sides [hatch part (both
sides) shown below] of the switch in the
direction indicated by the arrows. This
could cause erroneous operation. Also,
when using a metal installation board,
please make allowance for burr direction
designation and burr suppressing, etc.,
so that the burr side will not be on the
switch installation side.
1) To secure the switch, please use an
M3 small screw on a flat surface and
tighten using a maximum torque of 0.29
N·m. It is recommended that spring
washers be used with the screws and
adhesive be applied to lock the screws to
prevent loosening of the screws. Please
make sure not to apply adhesive onto
the moving parts.
2) Be sure to maintain adequate
insulating clearance between each
terminal and ground.
5.08±0.1
3) Although it is possible to directly
operate the pin plunger type from the
lateral direction, please consult us if
doing so.
4) After mounting please make sure no
tensile load will be applied to the switch
terminals.
5) Range of possible use: Please set the
operation position to within the ranges in
the following table so that there is
sufficient insulation distance and to
maintain contact reliability.
Actuator
Plunger/lever free
From boss and
From standoff
hole center line
Pin plunger
>9.2 mm
>13.4 mm
Leaf lever
>10.7 mm
>14.9 mm
Simulated leaf
lever
>13.5 mm
>17.7 mm
Actuator
Plunger/Lever pushed
From boss and
From standoff
hole center line
Pin plunger
7.8 to 5.9 mm
12.0 to 10.1 mm
Leaf lever
8.4 to 6.2 mm
12.6 to 10.4 mm
Simulated leaf
lever
11.1 to 8.7 mm
15.3 to 12.9 mm
6) PC board terminal type should be
used if the products are to be soldered on
the PC board. (Solder terminal type is not
for soldering on PC board.)
■Cautions regarding the circuit
1) In order to prevent malfunction in set
devices caused by bounce and chattering
during the ON-OFF switch operation,
please verify the validity of the circuit
under actual operating conditions and
temperature range.
2) When switching inductive loads
(relays, solenoids, buzzers, etc.), an arc
absorbing circuit is recommended to
protect the contacts.
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a.
di
5
5.08±0.1
■Please verify under actual
conditions.
Please be sure to conduct quality
verification under actual operating
conditions in order to increase reliability
during actual use.
■Selection of switch
Please make your selection so that there
will be no problems even if the operating
characteristics vary up to ±20% from the
standard values.
■Others
1) Keep away from environments where
silicon based adhesives, oil or grease are
present as faulty contacts may result
from silicon oxide. Do not use in areas
where flammable or explosive gases from
gasoline and thinner, etc., may be
present.
2) When using the lever type, please be
careful not to apply unreasonable load
from the reverse or lateral directions of
operation.
3) Do not exceed the total travel position
(TTP) and press the actuator. This could
cause operation failure. Also, when
switching at high speed or under shock
even within the operation limit, the
working life may decrease. Therefore,
please be sure to verify the quality under
actual conditions of use.
4) Please make considerations so that
the switch does not become the stopper
for the operating part. The switch could
break.
© Panasonic Corporation 2019
AECTB14E 201903
Technical Terminology & Cautions for Use
Technical Terminology & Cautions for Use
(Detection Switches)
TECHNICAL TERMINOLOGY
■ Detection Switches
A compact switch equipped with an enclosed micro-gap snapaction contact mechanism that makes a specified motion with a
specified force to open/close a circuit, and an actuator outside
the enclosure (hereinafter referred to as the switch)
■ Actuator
A part of the switch that transmits the received external force to
an internal spring mechanism to move the movable contact so
that the switch can be opened and closed
■ Actuator stopper
A part of the switch to limit the actuator movement in the switch
operation direction
■ Rated values
Values indicating the characteristics and performance guarantee
standards of the snap-action switches. The rated current and
rated voltage, for instance, assume specific conditions (type of
load, current, voltage, frequency, etc.).
■ Mechanical life
The service life when operated at a preset operating frequency
without passing electricity through the contacts. (The life test is
performed at a switching frequency of 60 times/minute and
operating speed of 100 mm/second at the regular cam.)
■ Electrical life
The service life when the rated load is connected to the contact
and switching operations are performed. (The life test is
performed at a switching frequency of 20 times/minute and
operating speed of 100 mm/second at the regular cam.)
ー6ー
■ Contact form
This refers to the
components
determining the type
of application which
make up the electrical
input/output circuits in
the contact.
SPDT
SPST-NC
SPST-NO
■ Insulation resistance
Resistance between non-continuous terminals, each terminal
and other exposed metal parts and between each terminal and
ground.
■ Dielectric
Threshold limit value that a high voltage can be applied to a
predetermined measuring location for one minute without
causing damage to the insulation.
■ Contact resistance
This indicates the electrical resistance at the contact part.
Generally, this resistance includes the conductor resistance of
the spring and terminal portions.
■ Vibration resistance
Malfunction vibration ... Vibration range where a closed contact
does not open for longer than a specified time due to vibrations
during use of the snap-action switches.
■ Shock resistance
Shock durability ... Shock range where the mechanical shocks
received during snap-action switches transport and installation
do not damage the parts or harm the operating characteristics.
Malfunction shock ... Shock range where a closed contact does
not open for longer than a specified time due to shocks during
use of the snap-action switches.
AECTB36E 201811-T
Technical Terminology & Cautions for Use
OPERATING CHARACTERISTIC
■ Definition of operating characteristic
The main terminological illustrations and
meanings which are used with snapaction switches are as follows.
Classification
RF
OF
PT
TF
Force
TT
FP
OT
Symbol
Unit
Varying
display
method
Operating
Force
OF
N
Max.
Release
Force
RF
N
Min.
Totaltravel
Force
TF
N
Pretravel
PT
mm,
degree
Max.
Overtravel
OT
mm,
degree
Min.
Movement
Differential
MD
mm,
degree
Max.
Totaltravel
TT
Free
Position
FP
Operating
Position
OP
mm,
degree
Release
Position
RP
mm,
degree
The position of the actuator when the traveling
contact snaps back from operating position to its
original position.
Total travel
Position
TTP
mm,
degree
The stopping position of the actuator after total
travel.
Terminology
MD
OP
RP
TTP
Movement
Center of mounting holes
Position
mm,
degree
mm,
degree
±
Starting current
The force required to cause contact snap-action. It
is expressed terms of force applied to the the
actuator.
The force to be applied to the the actuator at the
moment contact snaps back from operated
position to total travel position.
Force applied to an actuator required to move from
an operating position to a total travel position
Distance or agree of the actuator movement from
free position to operating position.
The distance or degree which the actuator is
permitted to travel after actuation without any
damage to the switching mechanism.
The distance or degree from operating position to
release position of the actuator.
The migration length or the move angle from the
free position to total travel position of actuator
Position of the actuator when no force is applied
to.
The position of the actuator when the traveling
contacts snaps with the fixed contact.
TECHNICAL NOTES ON MECHANICAL CHARACTERISTICS
OF
RF
FP
Contact force
The figure at right
shows a typical
example of activation
and contact forces
varying with stroke.
In the vicinity of the
OP and RP, the
contact force is
diminished, causing
chatter and contact
bounce immediately
before or after
reversal. For this
reason, use the
switch while giving
due consideration to
this. This also causes
the snap action
switch to be sensitive
to vibration or shock.
Operating force
■ Actuation Force and Stroke
Adequate stroke setting is the key to high reliability. It is also
important that adequate contact force be ’maintained to ensure
high reliability. For a normally closed (NC) circuit, the driving
mechanism should be set so that the actuator is normally in the
free position. For a normally open (NO) circuit, the actuator
should be pressed to 70% to 100% of the specified stroke to
absorb possible errors.
If the stroke is set too close to the operating point (OP), this may
cause unstable contact, and in the worst case may cause
actuator damage due to inertia of the drive mechanism. It is
advisable that the stroke be adjusted with the mounting plate or
driving mechanism.
RP
PT
TTP
OP
MD
■ Changes in Operating Characteristics
Exercise design care so that malfunctions will not occur if the
operating characteristics vary by as much as 20% from, rated
values.
In the OF max. 0.98N specification for FS snap-action switches,
the allowable max. is 0.98 N × (100%+20%) = 1.18 N
In the RF min. 0.15 N min. specification
the allowable min. 0.15 N × (100%–20%) = 0.12 N
■ Mechanical Conditions for Type Selection
Actuator type should be selected according to activation
method, activation speed, activation rate, and activation
frequency.
1) An extremely slow activation speed may cause unstable
contact transfer, possibly resulting in contact failures or contact
fusion.
2) An extremely high activation speed may cause damage to
contacts or contact response failure.
Stroke
■ Driving Mechanism
Use of a driving mechanism which will cause physical impact to
the actuator should be avoided.
OT
NC
On FP
On reversal
On reversal
On OTP
NO
Stroke
Bad
ー7ー
Good
AECTB36E 201811-T
Technical Terminology & Cautions for Use
TECHNICAL NOTES ON ELECTRICAL CHARACTERISTICS
1) The snap-action switch is designed for AC operations. While it
has small contact gaps and no arc absorber, it may be used for
low-capacity DC operations.
Please refer to the rating of each products
2) For applications with very small switching voltage or current,
choose the low-level load type (Au contact).
Small current and voltage application range (Au contact)
Current (mA)
500
100
50
10
5
2
1
4
8
12
16
20
24
DC voltage (VDC)
3) When selecting a contact type of a snap-action switch to be
used for low-level load switching, the following should be noted.
Silver contacts’ surfaces are prone to be oxidized and form a
sulfide film. The switch operates with no problems at the
beginning of use. However, as the contact surfaces develop films
with time, the film may not be broken by the switching operation,
causing a conduction failure. Therefore, please choose the Au
contact type for switching a load of 0.1 A or below.
4) Application to Electronic Circuits
• The snap-action switch contacts can sustain bounce or chatter
when closed. Bounce or chatter can cause noise or pulse count
errors when the snap action switch is used in electronic circuits.
• If contact bounce or chatter poses problems in the vicinity of
the OP and RP, use a suitable absorption network, such as a C/
R network.
5) Check the surge current, normal current and surge duration.
6) Contact resistance given in performance specifications is
measured with a voltage drop method using 6 to 8 V DC, 1 A
(except for low-level load type). Contact resistance across COM
and NC terminals is measured in the free position, while contact
resistance across COM and NO terminals is measured in the
total travel position.
7) To prevent contact welding failure, be sure to use a serial
resistance for each capacitive load.
8) If snap-action switch operation is synchronized with the AC
supply phase, this may cause: shortened electrical life, contact
fusion failure, contact transfer, or other reliability problems.
CAUTIONS IN A CIRCUIT
1) Contact protection is recommended when snap-action
switches are used in an inductive load circuit.
Circuit diagram
Contact for snap-action switch
r
c
R
Contact for snap-action switch
r
c
R
Contact for snap-action switch
diode
Can be used for both AC and DC.
Impedance of r is nearly equal to
impedance of R.
C: 0.1 μF
Wrong
Lamp load
PL
Solenoid load
Right
Lamp load
PL
Solenoid load
Load connected to same pole
Example of wrong
power supply
connection (connection
to different poles of
power supply)
This may lead to mixed
DC and AC.
(1) For DC circuits only.
R
Can be used for both AC and DC.
Wrong
Load
L
AC
DC
Load
Induction load
Contact for snap-action switch
ZNR
Varistor
Cautions for use
(1) r = more than 10 Ω
(2) In an AC circuit
Impedance of R is to be slightly smaller
than impedance of r and c.
2) Do not connect the
contacts on individual
switches to different
type or different poles of
the power supply.
Examples of power
supply connections
(connection to different
poles)
L
3) Avoid circuits which
apply voltage between
contacts. (This may lead
to mixed deposition.)
Wrong
L
200V
100V
ー8ー
AECTB36E 201811-T
Technical Terminology & Cautions for Use
MOUNTING STATE AND ENVIRONMENT
■ Checking the insulation distance
After mounting and wiring, check the insulation distance
between terminals and the ground. If the insulation distance is
inadequate, mount insulating material between as required.
■ Fastening the snap-action switch body
See the Section “CAUTIONS FOR USE” for the individual
switch.
■ Position adjustment with effector
1) The effector should be positioned so that direct force is not
applied to the plunger or actuator in its free position. The
operating force to the plunger should only be applied in a
perpendicular direction.
2) Note that the use of the switch as a stopper may cause an
operational problem.
■ Switch installation position
• Basically, the switch should be installed so that the object to
press the switch’s plunger or lever can press it down to 70 to
100% of OT of the switch. When determining the position, the
tolerance of OP (Operating Position) and other factors should be
taken into account.
The following describes the case where the strictest tolerance
conditions are adopted.
• Example: Hinge lever type FS switch
Reference values: OP = 8.8±0.8mm
PT = max. 2.8mm
OT = min. 1.2mm
FP
OP
TTP
PT
OT
(1) When the switch is not pressed
The object to press the lever should not be in contact with
the lever.
For this purpose, the object should be at a distance from
the switch father than the maximum FP (Free Position)
value.
FP max = OP max + PT max = 9.6 + 2.8 = 12.4 mm max
The object should be at a distance of 12.4 mm or more
from the mounting hole.
(2) Depressed position
The plunger/lever should be pressed down to 70% or
more of OT (Over Travel). Therefore, the depressed
position should be calculated based on the minimum
value of OP (Operating Position) and the 70 and 100% of
the OT value.
OP min - 70% of OT = 8.0 - 0.84 = 7.16 mm
OP min - 100% of OT = 8.0 - 1.2 = 6.80 mm
The plunger/lever should be pressed down to the position
of 6.80 to 7.16 mm from the mounting hole.
■ Soldering precautions
For manual soldering, lay the terminals flat (horizontal with the
ground) and quickly perform the soldering operation using a
soldering iron with the appropriate heat capacity and the proper
amount of solder. Take care that the flux does not flow into the
switch interior by using a ventilation fan to discharge flux gas
and to prevent contact of the switch body with the soldering iron
tip.
Be careful not to apply force to the lead wires or the terminal
portions immediately after soldering.
The temperature setting and time conditions vary depending on
the product.
See the section “CAUTIONS FOR USE” for each product.
Wrong
Soldering iron tip
Correct
■ Avoid using in a silicon atmosphere
Avoid using organic silicon rubber, adhesives, sealing
compounds, oil, grease, and wires in a silicon atmosphere.
■ Please consult us when using under the following
conditions*:
1) Environments where hydrogen sulfide or other corrosive
gases are present.
2) Environments where gasoline, thinner or other flammable,
explosive gases are present.
3) Dusty environments (for non-seal type snap action switches).
4) The perpendicular operating speed exceeds the allowable
operating speed.
5) Switching between different poles.
6) Use in environments not in the prescribed temperature or
humidity range.
■ Storage precautions
To prevent discoloration due to sulfurization of the terminals
(silver- plated), store the switches in a polyethylene bag or other
suitable airtight container.
ー9ー
AECTB36E 201811-T
Technical Terminology & Cautions for Use
■ Usage, storage, and transport conditions (except
turquoise switches)
During usage, storage, or transportation, avoid locations subject
to direct sunlight and maintain normal temperature, humidity,
and pressure conditions.
The allowable specifications for environments suitable for usage,
storage, and transportation are given below.
1) Temperature: The allowable temperature range differs for
each switch, so refer to the switch’s individual specifications. In
addition, when transporting or storing switches while they are
tube packaged, there are cases when the temperature may differ
from the allowable range. In this situation, be sure to consult the
individual specifications.
2) Humidity: The allowable temperature range differs for each
switch, so refer to the switch’s individual specifications.
3) Pressure: 86 to 106 kPa
The humidity range varies with the temperature. Use within the
range indicated in the graph below.
Humidity, %R.H.
85
Tolerance range
(Avoid freezing when (Avoid
used at temperatures condensation when
lower than 0°C 32°F) used at temperatures
higher than 0°C 32°F)
5
–40
–40
0
+32
Temperature, °C °F
■ We reserve the right to modify without notice the
materials, internal components, and other parts to improve
product quality.
■ Handling precautions
When handling the switches, be careful not to drop them on the
floor since this may damage them.
* Select contact sulfurization (clipping) prevention products (FS and Au-clad double
layer contacts) for use with extremely small loads or an environment-resistant
Turquoise switch.
■ Others
1) Failure modes of switches include short-circuiting, opencircuiting and temperature rises. If this switch is to be used in
equipment where safety is a prime consideration, examine the
possible effects of these failures on the equipment concerned,
and ensure safety by providing protection circuits or protection
devices. In terms of the systems involved, make provision for
redundancy in the design and take steps to achieve safety
design.
2) The ambient operating temperature (and humidity) range
quoted is the range in which the switch can be operated on a
continuous basis: it does not mean that using the switch within
the rating guarantees the durability performance and
environment withstanding performance of the switch. For details
on the performance guarantee, check the specifications of each
product concerned.
+85
+185
(The allowable temperature depends on the switch.)
• Condensation will occur inside the switch if there is a sudden
change in ambient temperature when used in an atmosphere of
high temperature and high humidity. This is particularly likely to
happen when being transported by ship, so please be careful of
the atmosphere when shipping. Condensation is the
phenomenon whereby steam condenses to cause water
droplets that adhere to the switch when an atmosphere of high
temperature and humidity rapidly changes from a high to low
temperature or when the switch is quickly moved from a low
humidity location to one of high temperature and humidity.
Please be careful because condensation can cause adverse
conditions such as deterioration of insulation, coil cutoff, and
rust.
• Condensation or other moisture may freeze on the switch when
the temperatures is lower than 0°C 32°F. This causes problems
such as sticking of movable parts or operational time lags.
• The plastic becomes brittle if the switch is exposed to a low
temperature, low humidity environment for long periods of time.
• Storage for extended periods of time (including transportation
periods) at high temperatures or high humidity levels or in
atmospheres with organic gases or sulfide gases may cause a
sulfide film or oxide film to form on the surfaces of the contacts
and/or it may interfere with the functions. Check out the
atmosphere in which the units are to be stored and transported.
• In terms of the packing format used, make every effort to keep
the effects of moisture, organic gases and sulfide gases to the
absolute minimum.
ー 10 ー
AECTB36E 201811-T
Technical Terminology & Cautions for Use
■ Types of actuators
Shape
Pretravel
(PT)
Overtravel
(OT)
Operating
Force
(OF)
Vibration
Shock
Pin plunger
Small
Small
Large
Outstanding
Appropriate for linear short-stroke action. Pin plunger acts directly on snap
action mechanism, enabling high-precision positioning. Amount of movement
after operation is smallest among all of the actuators, however, so reliable
stopper is required.
Hinge lever
Large
Medium
Small
Possible
Little force required for operation. Appropriate for use with low-speed cams and
dogs; has large stroke.
Lever available in various shapes to fit operating unit.
Simulated roller
lever
Large
Medium
Small
Possible
Tip of hinge lever is bent into a semi-circle, enabling use as a simple roller type.
Leaf lever
Large
Large
Small
Excellent
Play in lever is used to assure maximum stroke. Construction provides for
space where lever is attached, for outstanding resistance to freezing.
Hinge roller lever
Large
Medium
Small
Possible
This is a hinge lever with a roller, and can be used with high-speed cams and
dogs.
The force required for pin plunger action is lighter than that of the lever, and the
stroke is longer.
Classification
Features
ー 11 ー
AECTB36E 201811-T
2019
AECTB14E-1 201903
工商网监
湘ICP备2023018690号
