24 25
A22R/M22R Series A22R/M22R Series
Precautions
• Do not use the Switch for loads that exceed the rated
switching capacity or other contact ratings. Doing so may
result in contact weld, separation failure, or insulation failures.
Furthermore, the Switch may be broken or damaged.
• Do not touch the charged switch terminals while power is
supplied, otherwise an electric shock may be received.
• The life of the Switch varies greatly with switching conditions.
Before using the Switch, be sure to test the Switch under
actual conditions. Make sure that the number of switching
operations is within the permissible range.
If a deteriorated Switch is used continuously, insulation
failures, contact weld, contact failures, switch damage, or
switch burnout may result.
• Do not apply excessive or incorrect voltages to the Switch or
incorrectly wire the terminals. Otherwise, the Switch may not
function properly and have an adverse effect on external
circuitry.
Furthermore, the Switch itself may become damaged or burnt.
• Do not use the Switch in locations where flammable or
explosive gasses are present. Otherwise switching arcs or
heat radiation may cause a fire or explosion.
• Do not drop or disassemble the Switch, otherwise it may not
be capable of full performance. Furthermore, it may be broken
or burnt.
● LED
• The LED current-limiting resistor is built-in, so internal
resistance is not required.
• If commercially available LEDs are used, select the ones that
meet the following conditions:
Base: BA9S/13@
Overall length: 26mm Maximum
Power consumption: 2.6 W Maximum
● Storage
• When the Switch is left unused or stored for long periods, the
ambient conditions can have a great effect on the condition of
the Switch. In certain environments, leaving the Switch
exposed may result I deterioration (i.e., oxidation, or the
creation of an oxide film) of the contacts and terminals,
causing the contact resistance to increase, and making it
difficult to solder the lead wires. Therefore, store in a
well-ventilated room, inside, for example, a non-hygroscopic
case, in a location where no corrosive gasses are present.
• If the Switch is stored in a location where it will be exposed to
direct light, colored resin in the colored plate may fade.
Therefore, do not store the Switch I locations where it will be
exposed to direct light.
• The pushbutton surface is composed of resin. Therefore, do
not attempt to operate the pushbutton using a sharp object,
such as a screwdriver or a pair of tweezers. Also, do not
drop, throw, or knock the Switch. Doing so may damage or
deform the pushbutton surface and result in faulty operation.
• Periodic maintenance is required to use the Switch stably.
● Operational Environment
• The IP65 model is designed with a degree of protection so that it will not
sustain damage if it is subject to water from any direction to front of the panel.
• This Switch is indoor use only. Outdoor use of the Switch will cause
operation failure of the Switch.
• Do not use the Switch in the water, oil, or in locations where water, oils,
detergent, chemicals, or solvent is applied to the Switch always.
Otherwise, switching failure will be happened.
• Do not use the Switch under the environmental condition where corrosive
gas (ammonia, chlorine, dioxide sulfur…etc.) is generated. Otherwise,
the Switch will corrode.
• Do not use the Switch in locations where dust, metal or plastic dust exists.
Dust will accumulate o the Switch, and then the Switch wouldn’t operate
normally.
• Do not use the Switch under the environmental condition where excessive
vibration or shock exists. Otherwise, incorrect switching would occur.
● Electrical Conditions
Do not wire and/or touch the switch
terminal while power is supplied to
the switch to avoid electric shock.
● Mounting
• Always make sure that the power is turned OFF before
mounting, removing, or wiring the Switch, or performing
maintenance.
• Do not tighten the mounting ring more than necessary using
tools such as pointed-nose pliers. Doing so will damage the
mounting ring. The tightening torque is 0.98 to 1.96N·m.
• Recommended panel thickness: 1 to 5 mm.
● Wiring
Solid wire: 1.6mm diameter Maximum
Bare Crimp Terminals
Warning
Correct Use
Crimp Terminal with Insulating Sheath
8mm max.
8mm max.
20.2mm max.
• Secure appropriate insulation distance after wiring of the Switch.
• Perform wiring so that the lead wires will not be caught on
other objects as this will cause stress on the Switch terminals.
Wire the Switch so that there is slack in the lead wires and fix
lead wires at intermediate points. If the panel to which the
Switch is mounted needs to be opened and closed for
maintenance purpose, perform wiring so that the opening and
closing of the panel will not interfere with the wiring.
• When use the Switch for opening and closing a microload or large-load,
use the Switch with an appropriate relay.
• Before using the Switch, be sure to test the Switch under actual conditions.
• This product is a standard load type Switch. Using the Switch for opening
and closing a microload circuit may cause contact failure. Use the Switch
within the operating range as shown in below chart.
0.1 1 10 100 1,000
1mA 10mA
5
12
24
30
0.16mA 1.6mA 100mA
0
o
t
I
(A)
i
Precautions
Precautions
• Terminal screws must be Phillips with a square washer.
• The tightening torque is 1.08 to 1.27N·m.
• Single wires, stranded wires and crimp terminals except round
type can be connected to the Switch.
• Applicable Wire Size
Strand wire: 2mm2 Maximum
16.0mm max.
• The switching load capacity of the Switch greatly varies between AC and
DC. Always be sure to apply the rated load. The control capacity will
drastically drop if it is a DC load. This is because a DC load has no current
zero-cross point, unlike an AC load. Therefore, if an arc is generated, it
may continue for a comparatively long time. Furthermore, the current
direction is always the same, which results in a contact relocation
phenomena whereby the contacts easily stick to each other and do not
separate when the surfaces of the contacts are uneven.
• Some types of load have a great difference between normal current and
inrush current. Make sure that the inrush current is within the permissible
value. The greater the inrush current in the closed circuit is, the greater
the contact abrasion or shift will be. Consequently, contact weld, contact
separation failures, or insulation failures may result. Furthermore, the
Switch may be broken or damaged.
• If the load is inductive, counter-electromotive voltage will be generated.
The higher the voltage is, the higher the generated energy will be, which
increase the abrasion of the contacts and contact relocation phenomena.
Be sure to use the Switch within the rated conditions.
Precautions
Precautions
Precautions
● Mechanical Conditions● Switching
• Operating the Switch using a hard object (e.g., metal), or with
a large or sudden force, may deform or damage the Switch,
resulting in faulty or rough operation, or shortening of the
Switch life.
Hammer
Do not apply excessive
or sudden force.
Tweezers
Do not use sharp objects.
Screwdriver
Solenoid
(Approximately
10 to 20 times higher)
Incandescent lamp
(Approximately
10 to 15 times higher)
Relay
(Approximately
4 to 5 times
higher)
Motor
(Approximately
5 to 10 times
higher)
(Current)
(Steady current)
Voltage (V)
Microload
area
Standard
load area
Invalid
area
Current (mA)
(Time)