AM1544F [PANASONIC]
Snap Acting/Limit Switch,;
| 型号： | AM1544F |
| 厂家： | 
PANASONIC |
| 描述： | Snap Acting/Limit Switch, |
| 文件： | 总14页 (文件大小：584K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
High Operating Precision
Basic Switches with High
Capacity and Long Life
AM1 (NZ)
SWITCHES
FEATURES
TYPICAL APPLICATIONS
• 10 A Current switching capacity
• High precision and long life
• Versatile variety of actuators
• Screw terminal types can be used
with M4 crimp terminals
• Transfer machine
• Packing machine
• Textile equipment
• Cutting machine
49.2
17.5
24.1
• Foot operated switch, etc.
(Unit: mm)
RoHS compliant
ORDERING INFORMATION
AM1
F
Upper body cover shape & terminal
1: Flat, solder terminal
3: Flat, screw terminal
5: Grooved, solder terminal
7: Grooved, screw terminal
Basic specifications
0: Standard type
1: Oil tight type
3: Reversed action type
4: One way type
Actuators
0: Pin plunger
F: Cadmium free
1: Hinge lever (Flexible leaf lever)
3: Hinge roller lever (Flexible roller leaf lever)
4: Hinge short roller lever
Upper body cover shape
Flat
Grooved
5: Overtravel plunger
6: Compact overtravel plunger
7: Panel mount plunger
811: Panel mount roller plunger
812: Panel mount cross roller plunger
Note: Not every combination is available. Please refer to the following table, “PRODUCT TYPES”.
Standard part number indicates UL/C-UL (CSA standard) mark.
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AM1 (NZ) Basic Switches
PRODUCT TYPES
■ Standard type
Terminal style
Actuator
Solder terminal
AM1100F
AM1105F
AM1106F
AM1107F
AM110811F
AM110812F
AM1101F
AM1103F
AM1501F
AM1504F
AM1503F
AM1544F
AM1543F
AM1531F
AM1534F
AM1533F
Screw terminal
AM1300F
AM1305F
AM1306F
AM1307F
AM130811F
AM130812F
AM1301F
AM1303F
AM1701F
AM1704F
AM1703F
AM1744F
AM1743F
AM1731F
AM1734F
AM1733F
Pin plunger
Over travel plunger
Compact over travel plunger
Panel mount plunger
Panel mount roller plunger
Panel mount cross roller plunger
Flexible leaf lever
Flexible roller leaf lever
Hinge lever
Hinge short roller lever
Hinge roller lever
One way type hinge short roller lever
One way type hinge roller lever
Reversed action type hinge lever
Reversed action type hinge short roller lever
Reversed action type hinge roller lever
Standard packing for inner carton: 20cps.
Note: Standard part number indicates UL/C-UL (CSA standard) mark.
■ Oil tight types
Terminal style
Actuator
Solder terminal
AM1511F
Screw terminal
AM1711F
Hinge lever
Hinge short roller lever
Hinge roller lever
AM1514F
AM1714F
AM1513F
AM1713F
Standard packing for inner carton: 20cps.
Note: Standard part number indicates UL/C-UL (CSA standard) mark.
SPECIFICATIONS
■ Contact Rating
Motor or lamp load
Resistive load
(cos φ = 1)
Inductive load
(cos φ = 0.4)
Type
Voltage
NC
3 A
2 A
—
NO
1.5 A
1 A
—
125 V AC
250 V AC
480 V AC
125 V DC
250 V DC
125 V AC
250 V AC
125 V DC
10 A
10 A
1 A
6 A
6 A
Standard type
0.5 A
0.05 A
0.03 A
6 A
0.5 A
0.25 A
10 A
10 A
0.5 A
—
—
—
—
3 A
2 A
—
1.5 A
1.0 A
—
Oil tight type
6 A
0.05 A
■ Characteristics
Item
Specifications
Min. 2 ×107 (60 cpm) (OT: specified value)
Pin plunger types
(Oil tight: Min. 1.5 ×106)
Mechanical
Min. 5 ×106 (60 cpm) (OT: specified value)
(Oil tight: Min. 1.5 ×106)
Expected life
Other actuator types
Min. 5 ×105 (20 cpm) (at rated load)
Electrical (OT: Max.)
(Oil tight: Min. 1.5 ×105)
Insulation resistance
Dielectric strength
Min. 100 MΩ (at 500 V DC)
1,000 Vrms for 1 min.
Between non-continuous terminals
Between each terminal and other exposed metal parts
Between each terminal and ground
2,000 Vrms for 1 min.
2,000 Vrms for 1 min.
Contact resistance (initial)
Max. 50 mΩ (by voltage drop, 1 A, 6 to 8 V DC)
Vibration resistance (Pin plunger type)
Pin plunger types
Other actuator types
Single amplitude: 0.75 mm, 10 to 55 Hz (contact opening: max. 1 msec.)
Min. 300 m/s2 (contact opening: max. 1 msec.)
Min. 50 m/s2 (contact opening: max. 1 msec.)
Shock resistance
Allowable operating speed (at no load)
Max. operating cycle rate (at no load)
Ambient temperature
0.1 to 1,000 mm/sec. (at pin plunger position)
240 cpm
–25°C to +80°C (no freezing and condensing)
Unit weight
Approx. 20 to 55 g
Ag alloy
Contact specifications
Protection grade
Contact material
IP40
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AM1 (NZ) Basic Switches
■ Operating Characteristics
1) Standard type
Movement
DifferentialMD,
max.
Operating
Force OF, max.
Release Force
RF, min.
Pretravel PT,
max.
Overtravel OT,
min.
Free Position
FP, max.
Operating
Position OP
Actuator
Pin plunger
3.63 N
3.63 N
3.63 N
3.63 N
3.63 N
3.63 N
1.47 N
1.47 N
0.69 N
1.57 N
0.98 N
2.23 N
1.67 N
1.67 N
5.30 N
2.35 N
0.12 N
0.12 N
0.12 N
0.12 N
0.12 N
0.12 N
0.14 N
0.14 N
0.14 N
0.42 N
0.2 N
0.4 mm
0.4 mm
0.4 mm
0.4 mm
0.4 mm
0.4 mm
4 mm
0.05 mm
0.05 mm
0.05 mm
0.05 mm
0.05 mm
0.05 mm
1.3 mm
1.3 mm
1.3 mm
0.7 mm
1.3 mm
0.4 mm
0.5 mm
0.9 mm
0.4 mm
0.7 mm
0.13 mm
1.5 mm
1.5 mm
5.6 mm
3.6 mm
3.6 mm
1.6 mm
1.6 mm
5.6 mm
2.4 mm
3.6 mm
1.5 mm
2.4 mm
5.6 mm
2.0 mm
4.0 mm
—
15.9 0.4 mm
28.2 0.5 mm
21.2 0.5 mm
21.8 0.8 mm
33.3 1.2 mm
33.3 1.2 mm
17.5 0.8 mm
28.6 0.8 mm
19.1 0.7 mm
30.2 0.4 mm
30.2 0.7 mm
30.2 0.4 mm
41.3 0.4 mm
19.1 0.8 mm
30.2 0.5 mm
30.2 0.8 mm
Overtravel plunger
—
Compact overtravel plunger
Panel mount plunger
—
—
Panel mount roller plunger
Panel mount cross roller plunger
Flexible leaf lever
—
—
—
Flexible roller leaf lever
4 mm
—
Hinge lever
10 mm
4.5 mm
7.5 mm
3.5 mm
4.5 mm
5.0 mm
2.5 mm
3.6 mm
—
Hinge short roller lever
—
—
Hinge roller lever
One way type hinge short roller lever
One way type hinge roller lever
Reversed action type hinge lever
Reversed action type hinge short roller lever
Reversed action type hinge roller lever
0.42 N
0.42 N
0.27 N
1.67 N
0.56 N
31.8 mm
43.3 mm
—
—
—
2) Oil tight types
Movement
Differential MD,
max.
Operating Force ReleaseForceRF,
Overtravel OT,
OperatingPosition
OP
Actuator
Pretravel PT, max.
OF, max.
min.
min.
Hinge lever
0.69 N
1.67 N
0.98 N
0.14 N
0.42 N
0.20 N
10 mm
4.5 mm
7.5 mm
1.5 mm
0.7 mm
1.3 mm
5.6 mm
2.4 mm
3.6 mm
19.1 0.7 mm
30.2 0.4 mm
30.2 0.7 mm
Hinge short roller lever
Hinge roller lever
CONTACT FORM
■ SPDT
■ Reversed action type
COM
NO NC
COM
NC NO
Contact return when actuator operates.
Even in the free position (FP), excellent vibration resistance and
shock resistance owing to immobilization by external force.
TERMINAL STYLE
■ Solder terminal
■ Screw terminal
9.1
6.3
49.2
49.2
C
NO
NC
N.O.
17.5
CIRCUT
17.5
N.C.
CIRCUT
19.8
M4 screw P0.7
20.2
Terminal plate
Note: The position of reversed action type of NO and NC is reverse.
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AM1 (NZ) Basic Switches
DIMENSIONS
(Unit: mm) General tolerance: 0.4
The CAD data of the products with a CAD Data mark can be downloaded from: http://industrial.panasonic.com/ac/e/
■ Standard types
Pin plunger
The photograph is a case of a screw terminal. The dimension is an intersection except a terminal section.
Please refer to “TERMINAL STYLE” for the shape and size of terminal section.
CAD Data
23.3 0.3
Operating Force OF, max.
Release Force RF, min.
Pretravel PT, max.
3.63 N
1.12 N
PT
2.4 0.15 dia.
OP
15
14.6
5.4
0.4 mm
9.1
Movement Differential
MD, max.
0.05 mm
0.13 mm
15.9 0.4 mm
AM1100F (Solder terminal)
AM1300F (Screw terminal)
+0.1
4.2
dia. hole
−0.05
+0.1
17.5
4.2
Overtravel OT, min.
−0.05
4.5 0.1
11.9
25.4 0.1
49.2
Operating Position OP
Overtravel plunger
CAD Data
Operating Force OF, max.
Release Force RF, min.
Pretravel PT, max.
3.63 N
1.12 N
4 dia.
23.3 0.3
Plunger: Hardening steel
6.35 dia.
PT
8.4
15
0.4 mm
OP
Movement Differential
MD, max.
0.05 mm
1.5 mm
Overtravel OT, min.
AM1105F (Solder terminal)
AM1305F (Screw terminal)
Operating Position OP
28.2 0.5 mm
Compact overtravel plunger
CAD Data
Operating Force OF, max.
Release Force RF, min.
Pretravel PT, max.
3.63 N
1.12 N
Plunger: Plastic
PT
0.4 max.
23.3 0.3
7.1 dia.
4.2
0.4 mm
+0.10
4.2
−0.05
OP
21.2 0.5
Movement Differential
MD, max.
0.05 mm
1.5 mm
Overtravel OT, min.
AM1106F (Solder terminal)
AM1306F (Screw terminal)
Operating Position OP
21.2 0.5 mm
The photograph is a case of a screw terminal. The dimension is an intersection except a terminal section.
Please refer to “TERMINAL STYLE” for the shape and size of terminal section.
Panel mount plunger
CAD Data
Plunger: Plastic
PT 0.4 max.
Operating Force OF, max.
Release Force RF, min.
Pretravel PT, max.
3.63 N
1.12 N
8.25 dia.
23.3 0.3
M12 × P1
Lock nut
(2 thick)
0.4 mm
Nut (2 thick)
Movement Differential
MD, max.
0.05 mm
5.6 mm
+0.10
4.2
−0.05
Overtravel OT, min.
AM1107F (Solder terminal)
AM1307F (Screw terminal)
Operating Position OP
21.8 0.8 mm
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AM1 (NZ) Basic Switches
Panel mount roller plunger
CAD Data
PT
0.4 max.
Roller 12.7 dia. × 4.6
: Plastic
Operating Force OF, max.
Release Force RF, min.
Pretravel PT, max.
3.63 N
1.12 N
23.3 0.3
M12 × P1
Nut (2 thick)
0.4 mm
Movement Differential
MD, max.
0.05 mm
3.6 mm
+0.10
4.2
−0.05
AM110811F (Solder terminal)
AM130811F (Screw terminal)
Overtravel OT, min.
Operating Position OP
33.3 1.2 mm
Panel mount cross roller plunger
Dimensions and Operating characteristics are the same
as those of Panel mount roller plunger type. However,
the roller joins the switch body at an angle of 90°.
CAD Data
Roller 12.7 dia. × 4.6
: Plastic
PT 0.4 max.
Operating Force OF, max.
Release Force RF, min.
Pretravel PT, max.
3.63 N
1.12 N
23.3 0.3
M12 × P1
Nut (2 thick)
0.4 mm
Movement Differential
MD, max.
0.05 mm
3.6 mm
AM110812F (Solder terminal)
AM130812F (Screw terminal)
+0.10
4.2
−0.05
Overtravel OT, min.
Operating Position OP
33.3 1.2 mm
Flexible leaf lever
CAD Data
Operating Force OF, max.
Release Force RF, min.
Pretravel PT, max.
1.47 N
0.14 N
49.6 0.8
Leaf: Stainless steel
4.8
4 mm
FP
OP
14.6
Movement Differential
MD, max.
1.3 mm
AM1101F (Solder terminal)
AM1301F (Screw terminal)
Overtravel OT, min.
1.6 mm
Operating Position OP
17.5 0.8 mm
Flexible roller leaf lever
CAD Data
Operating Force OF, max.
Release Force RF, min.
Pretravel PT, max.
1.47 N
0.14 N
Roller 9.5 dia.×4:
Plastic
46 0.8
Leaf: Stainless steel
4 mm
FP
OP
Movement Differential
MD, max.
14.6
1.3 mm
AM1103F (Solder terminal)
AM1303F (Screw terminal)
Overtravel OT, min.
1.6 mm
Operating Position OP
28.6 0.8 mm
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AM1 (NZ) Basic Switches
Hinge lever
The photograph is a case of a screw terminal. The dimension is an intersection except a terminal section.
Please refer to “TERMINAL STYLE” for the shape and size of terminal section.
CAD Data
26.1
Operating Force OF, max.
Release Force RF, min.
Pretravel PT, max.
0.69 N
0.14 N
Lever: Stainless steel
R63.5
4.8
10 mm
FP
Movement Differential
MD, max.
OP
20.1 0.5
1.3 mm
Overtravel OT, min.
5.6 mm
AM1501F (Solder terminal)
AM1701F (Screw terminal)
Operating Position OP
19.1 0.7 mm
Hinge short roller lever
CAD Data
Operating Force OF, max.
Release Force RF, min.
Pretravel PT, max.
1.57 N
0.42 N
Roller 9.5 dia.×4:
26.1
Plastic
R26.7
4.5 mm
Movement Differential
MD, max.
FP
0.7 mm
OP
20.1 0.5
Overtravel OT, min.
2.4 mm
Operating Position OP
30.2 0.4 mm
AM1504F (Solder terminal)
AM1704F (Screw terminal)
Hinge roller lever
CAD Data
Operating Force OF, max.
Release Force RF, min.
Pretravel PT, max.
0.98 N
0.2 N
Roller 9.5 dia.×4:
26.1
Plastic
R48.3
7.5 mm
FP
Movement Differential
MD, max.
1.3 mm
OP
20.1 0.5
Overtravel OT, min.
3.6 mm
Operating Position OP
30.2 0.7 mm
AM1503F (Solder terminal)
AM1703F (Screw terminal)
■ One way types
Hinge short roller lever
This type is operated only to one direction, not to the reversed direction by the
construction of the roller lever, pivoting away from the cam on the return stroke.
CAD Data
Roller 4.75 dia.×4.75:
Operating Force OF, max.
Release Force RF, min.
Pretravel PT, max.
2.23 N
0.42 N
Plastic
26.1
Operating
Non-operating
R21.1
3.5 mm
Movement Differential
MD, max.
FP
0.4 mm
27.8 max.
OP
20.1 0.5
Overtravel OT, min.
1.5 mm
AM1544F (Solder terminal)
AM1744F (Screw terminal)
Operating Position OP
30.2 0.4 mm
AECTB8E 201510-T
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AM1 (NZ) Basic Switches
Hinge roller lever
This type is operated only to one direction, not to the reversed direction by the
construction of the roller lever, pivoting away from the cam on the return stroke.
CAD Data
Roller 9.5 dia.×4:
Operating Force OF, max.
Release Force RF, min.
Pretravel PT, max.
1.67 N
0.42 N
Plastic
26.1
Operating
Non-operating
R31
4.5 mm
Movement Differential
MD, max.
0.5 mm
FP
OP
34.1 max.
20.1 0.5
Overtravel OT, min.
2.4 mm
Operating Position OP
41.3 0.4 mm
AM1543F (Solder terminal)
AM1743F (Screw terminal)
■ Reversed action types
Hinge lever
Contact return when actuator operates. (Please refer to “CONTACT FORM”.)
The photograph is a case of a screw terminal. The dimension is an intersection except a terminal section.
Please refer to “TERMINAL STYLE” for the shape and size of terminal section.
CAD Data
Lever: Stainless steel
Operating Force OF, max.
Release Force RF, min.
Pretravel PT, max.
1.67 N
0.27 N
18.7
R56
4.8
5.0 mm
FP
20.1 0.5
9.1
Movement Differential
MD, max.
OP
16.9 0.8
5.4
0.9 mm
AM1531F (Solder terminal)
AM1731F (Screw terminal)
Overtravel OT, min.
5.6 mm
+0.1
4.2
dia. hole
−0.05
+0.1
Operating Position OP
19.1 0.8 mm
4.2
−0.05
4.5 0.1
25.4 0.1
49.2
17.5
11.9
11.9
Hinge short roller lever
CAD Data
Operating Force OF, max.
Release Force RF, min.
Pretravel PT, max.
5.30 N
1.67 N
Roller 9.5 dia.×4:
Plastic
18.7
R19
2.5 mm
Movement Differential
MD, max.
FP
0.4 mm
OP
20.1 0.5
Overtravel OT, min.
2.0 mm
Operating Position OP
30.2 0.5 mm
AM1534F (Solder terminal)
AM1734F (Screw terminal)
Hinge roller lever
CAD Data
Operating Force OF, max.
Release Force RF, min.
Pretravel PT, max.
2.35 N
0.56 N
Roller 9.5 dia.×4:
Plastic
18.7
R41
3.6 mm
Movement Differential
MD, max.
FP
0.7 mm
OP
20.1 0.5
Overtravel OT, min.
4.0 mm
Operating Position OP
30.2 0.8 mm
AM1533F (Solder terminal)
AM1733F (Screw terminal)
AECTB8E 201510-T
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AM1 (NZ) Basic Switches
■ Oil tight types
Hinge lever
CAD Data
Operating Force OF, max.
Release Force RF, min.
Pretravel PT, max.
0.69 N
0.14 N
Plunger seal
26.1
Lever: Stainless steel
R63.5
10 mm
4.8
Movement Differential
MD, max.
1.5 mm
FP
20.1 0.5
OP
Overtravel OT, min.
5.6 mm
Operating Position OP
19.1 0.7 mm
AM1511F (Solder terminal)
AM1711F (Screw terminal)
Hinge short roller lever
CAD Data
Operating Force OF, max.
Release Force RF, min.
Pretravel PT, max.
1.67 N
0.42 N
Plunger seal
Roller 9.5 dia.×4:
Plastic
26.1
4.5 mm
R26.7
Movement Differential
MD, max.
0.7 mm
FP
OP
20.1 0.5
16.9 0.8
Overtravel OT, min.
2.4 mm
Operating Position OP
30.2 0.4 mm
AM1514F (Solder terminal)
AM1714F (Screw terminal)
The photograph is a case of a screw terminal. The dimension is an intersection except a terminal section.
Please refer to “TERMINAL STYLE” for the shape and size of terminal section.
Hinge roller lever
CAD Data
Operating Force OF, max.
Release Force RF, min.
Pretravel PT, max.
0.98 N
0.20 N
Plunger seal
Roller 9.5 dia.×4:
26.1
Plastic
R48.3
7.5 mm
Movement Differential
MD, max.
FP
1.3 mm
OP
20.1 0.5
16.9 0.8
Overtravel OT, min.
3.6 mm
AM1513F (Solder terminal)
AM1713F (Screw terminal)
Operating Position OP
30.2 0.7 mm
CAUTIONS FOR USE
■ Regarding fastening of switch body
■ Panel mount type
In fastening the switch body, use M4 mounting screws to attach
1) When mounting the panel, tighten the hex nut for actuator to
switches with the torque 1.5 N·m or less.
less than 4.0 N·m.
2) Mounting hole dimensions are as shown below.
■ Soldering operations
Mounting hole dimensions
Perform soldering in less than 3 seconds with maximum 350°C
iron. Care should be taken not to apply force to the terminals
during soldering. We recommend a soldering iron with
temperature adjustment in order to prevent poor quality
soldering.
Panel mount
plunger
Panel mount roller
plunger
12.5 dia.
12.5 dia.
5
Please consult us if you intend to use a soldering iron of 60 W or
higher.
13
■ Environment
Avoid using and storing these switches in a location where they
will be exposed to corrosive gases, silicon, or high dust levels, all
of which can have an adverse effect on the contacts.
AECTB8E 201510-T
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TechnicalTerminology & Cautions for Use
(Snap-action, Detection and Interlock Switches)
TECHNICAL TERMINOLOGY
■ Snap-action switches
■ Contact form
This refers to the
components
determining the type
of application which
make up the electrical
input/output circuits in
the contact.
A compact switch equipped with an enclosed micro-gap snap-
action 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)
NC
NO
SPDT
COM
NC
SPST-NC
SPST-NO
COM
COM
■ Actuator
NO
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
Terminal symbols
COM: Common terminal
NC: Normally closed terminal
NO: Normally open terminal
■ Actuator stopper
A part of the switch to limit the actuator movement in the switch
operation direction
■ Insulation resistance
Resistance between non-continuous terminals, each terminal
and other exposed metal parts and between each terminal and
ground.
■ 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.).
■ 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.
■ 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.)
■ Contact resistance
This indicates the electrical resistance at the contact part.
Generally, this resistance includes the conductor resistance of
the spring and terminal portions.
■ 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.)
■ 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 201510-T
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Technical Terminology & Cautions for Use
OPERATING CHARACTERISTIC
■ Definition of operating characteristic
The main terminological illustrations and
meanings which are used with snap-
action switches are as follows.
Varying
display
method
Classification Terminology Symbol
Unit
N
Starting current
The force required to cause contact snap-action. It
is expressed terms of force applied to the the
actuator.
Operating
Force
OF
RF
Max.
Min.
RF
OF
The force to be applied to the the actuator at the
moment contact snaps back from operated
position to total travel position.
PT
TF
Force
Release
Force
TT
N
N
FP
OT
MD
Totaltravel
Force
Force applied to an actuator required to move from
an operating position to a total travel position
OP
RP
TF
PT
TTP
mm,
degree
Distance or agree of the actuator movement from
free position to operating position.
Pretravel
Max.
Min.
Max.
The distance or degree which the actuator is
permitted to travel after actuation without any
damage to the switching mechanism.
mm,
degree
Overtravel
OT
Movement
Movement
Differential
mm,
degree
The distance or degree from operating position to
release position of the actuator.
MD
TT
mm,
degree
The migration length or the move angle from the
free position to total travel position of actuator
Totaltravel
Center of mounting holes
Free
Position
mm,
degree
Position of the actuator when no force is applied
to.
FP
OP
Operating
Position
mm,
degree
The position of the actuator when the traveling
contacts snaps with the fixed contact.
Position
The position of the actuator when the traveling
contact snaps back from operating position to its
original position.
Release
Position
mm,
degree
RP
Total travel
Position
mm,
degree
The stopping position of the actuator after total
travel.
TTP
TECHNICAL NOTES ON MECHANICAL CHARACTERISTICS
■ Actuation Force and Stroke
■ Changes in Operating Characteristics
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.
Exercise design care so that malfunctions will not occur if the
operating characteristics vary by as much as 20% from, rated
values.
<Example>
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
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.
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.
The figure at right
shows a typical
example of activation
1) An extremely slow activation speed may cause unstable
contact transfer, possibly resulting in contact failures or contact
fusion.
OF
and contact forces
varying with stroke.
2) An extremely high activation speed may cause damage to
contacts or contact response failure.
RF
In the vicinity of the
OP and RP, the
FP
RP
TTP
OP
Stroke
■ Driving Mechanism
MD
PT
OT
contact force is
Use of a driving mechanism which will cause physical impact to
diminished, causing
chatter and contact
bounce immediately
before or after
reversal. For this
reason, use the
the actuator should be avoided.
NC
On FP
<Example>
On reversal
Stroke
On reversal
On OTP
NO
switch while giving
due consideration to
this.This also causes
the snap action
Bad
Good
switch to be sensitive
to vibration or shock.
AECTB36E 201510-T
–2–
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).
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.
Small current and voltage application range (Au contact)
500
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.
100
50
10
5
2
1
7) Ratings are measured under the following conditions:
Inductive load: Power factor 0.6 to 0.7
4
8
12
16
20
24
Time constant: 7 ms or less (DC)
DC voltage (VDC)
8) To prevent contact welding failure, be sure to use a serial
resistance for each capacitive load.
9) 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.
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
CAUTIONS IN A CIRCUIT
1) Contact protection is recommended when snap-action
switches are used in an inductive load circuit.
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)
Wrong
Lamp load
PL
Circuit diagram
Cautions for use
(1) r = more than 10 Ω
(2) In an AC circuit
Contact for snap-action switch
Impedance of R is to be slightly smaller
than impedance of r and c.
Solenoid load
r
c
R
Right
Lamp load
PL
Can be used for both AC and DC.
Impedance of r is nearly equal to
impedance of R.
Contact for snap-action switch
r
Solenoid load
Load connected to same pole
C: 0.1 μF
R
c
Example of wrong
power supply
connection (connection
to different poles of
power supply)
Wrong
Load
L
(1) For DC circuits only.
Contact for snap-action switch
AC
DC
diode
R
This may lead to mixed
DC and AC.
Can be used for both AC and DC.
Contact for snap-action switch
ZNR
Load
L
R
Varistor
Wrong
3) Avoid circuits which
apply voltage between
contacts. (This may lead
to mixed deposition.)
L
200V
100V
AECTB36E 201510-T
–3–
Technical Terminology & Cautions for Use
MOUNTING STATE AND ENVIRONMENT
■ Checking the insulation distance
■ Soldering precautions
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.
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.
■ Fastening the snap-action switch body
See the Section “CAUTIONS FOR USE” for the individual
switch.
Be careful not to apply force to the lead wires or the terminal
portions immediately after soldering.
■ 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.
The temperature setting and time conditions vary depending on
the product.
See the section “CAUTIONS FOR USE” for each product.
<Examples>
Soldering iron tip
■ 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.
Wrong
Correct
The following describes the case where the strictest tolerance
conditions are adopted.
■ Avoid using in a silicon atmosphere
• Example: Hinge lever type FS switch
Avoid using organic silicon rubber, adhesives, sealing
compounds, oil, grease, and wires in a silicon atmosphere.
Reference values: OP = 8.8 0.8mm
PT = max. 2.8mm
■ Please consult us when using under the following
conditions*:
1) Environments where hydrogen sulfide or other corrosive
OT = min. 1.2mm
FP
gases are present.
OP
PT
2) Environments where gasoline, thinner or other flammable,
explosive gases are present.
TTP
OT
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.
(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.
■ 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.
(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.
AECTB36E 201510-T
–4–
Technical Terminology & Cautions for Use
■ Usage, storage, and transport conditions
During usage, storage, or transportation, avoid locations subject
to direct sunlight and maintain normal temperature, humidity,
and pressure conditions.
■ We reserve the right to modify without notice the
materials, internal components, and other parts to improve
product quality.
The allowable specifications for environments suitable for usage,
storage, and transportation are given below.
■ Handling precautions
When handling the switches, be careful not to drop them on the
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.
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
2) Humidity: 5 to 85% R.H.
3) Pressure: 86 to 106 kPa
The humidity range varies with the temperature. Use within the
range indicated in the graph below.
1) Failure modes of switches include short-circuiting, open-
circuiting 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.
Humidity, %R.H.
85
Tolerance range
(Avoid freezing when
used at temperatures
lower than 0°C 32°F)
(Avoid
condensation when
used at temperatures
higher than 0°C 32°F)
5
–40
0
+85
–40
+32
+185
Temperature, °C °F
(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.
AECTB36E 201510-T
–5–
Technical Terminology & Cautions for Use
■ Types of actuators
Operating
Force
(OF)
Pretravel Overtravel
Vibration
Shock
Shape
Classification
Features
(PT)
(OT)
Appropriate for linear short-stroke action. Pin plunger acts directly on snap
action mechanism, enabling high-precision positioning. Amount of movement
standing after operation is smallest among all of the actuators, however, so reliable
stopper is required.
Out-
Pin plunger
Small
Small
Large
Large
Spring small
plunger
Used in much the same way as the pin plunger, but is easier to use because
the amount of movement after operation is larger.
Small
Small
Medium
Medium
Large
Excellent
Spring short
plunger
Pin plunger is short, with large plunger diameter that makes centering easier.
Good
Large
Like small spring plunger, amount of movement after operation is large.
Secured to panel with hex or lock nut; used as manual or mechanical plunger.
Amount of movement after operation is extremely large and operation point can
be adjusted by changing attachment position. Can be used in combination with
Panel attachment
plunger
Small
Large
Good
low-speed cam.
Panel attachment
roller plunger
This is the panel attachment type with a roller, and can be used with fast-
moving cams and dogs..
Small
Large
Large
Possible
Little force required for operation. Appropriate for use with low-speed cams and
Possible dogs; has large stroke.
Hinge lever
Large
Medium
Medium
Large
Small
Lever available in various shapes to fit operating unit.
Simulated roller
lever
Large
Small
Possible Tip of hinge lever is bent into a semi-circle, enabling use as a simple roller type.
Play in lever is used to assure maximum stroke. Construction provides for
Excellent
Leaf lever
Large
Small
space where lever is attached, for outstanding resistance to freezing.
This is a hinge lever with a roller, and can be used with high-speed cams and
dogs.
Hinge roller lever
Large
Medium
Medium
Medium
Medium
Small
Small
Possible
The force required for pin plunger action is lighter than that of the lever, and the
stroke is longer.
This is hinge roller lever type, and can operate in relation to an operating unit
from a one way direction, but the roller is bent from the opposite direction and
cannot move.
This can be used to prevent reverse-direction action.
One way action
hinge roller lever
Medium
Medium
Medium
Large
Medium
Medium
Medium
Medium
Medium
Large
Possible
This has a leaf spring with offset yield force and has a large stroke. Ideal for
driving low-speed cams and cylinders. Fulcrum is fixed for high precision. To
prevent leaf damage, movement after operation must be within specified value.
Leaf spring
Good
Good
Roller leaf spring
This is a leaf spring with a roller, and can be used with high-speed cams.
(OC reversed
action groove type)
Reverse-action
hinge lever
This is used for low-speed, low-torque cams.
The plunger is constantly
Excellent The lever comes in various shapes to fit the
operating body.
pressed down by a coiled
spring, and operating the
lever induces reverse action.
Because the plunger is
(OC reversed
This is a reverse-action hinge lever with a roller
and is appropriate for cam operation. Excellent
resistance to vibration and impact when not
engaged.
depressed when not
action groove type)
Reverse-action
hinge roller lever
Medium
Small
Medium
Medium
Large
Excellent
engaged, vibration and shock
resistance are excellent.
Pressing the plunger too far
does not cause abnormal
force to be applied to the
switch mechanism, so a
stable service life is assured.
(OC reversed
action groove type)
Reverse-action
hinge roller short
lever
This is a shorter version of the reverse-action
hinge lever with a roller and has a larger action
Excellent force, but is appropriate for cam operation with
a short stroke. Excellent resistance to vibration
and impact when not engaged.
Rotating-action
type
This is a rotating, light-action type that is ideal for detecting paper, coins, and
similar objects.
Large
Small
Possible
AECTB36E 201510-T
–6–
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