AJ8R
J8 SWITCHES WITH
TRIP FUNCTION
POWER ROCKER SWITCH
UPGRADED TYPE
that shuts off the main power supply in
response to a signal that is received from
an external sensor.
making it possible to achieve greater effi-
ciency in wiring work.
Receptacle for AMP's CT connector
2. A dramatic upgrade in operation
feelings
These switches provide the same
comfortable operation feelings our
conventional J8 switches.
• Comparison of feel when switch is
turned on
receptacle socket
Conventional type
Upgraded type
4. Prolonged electrical service life.
Coil operation provides an electrical life
of at least 50,000 switching operations.
5. Assures excellent ability to with-
stand inrush current when used to
turn a power supply on/off.
FEATURES
1. Power switches with an electromag-
netic reset function which meet the
need for energy savings in equipment
and for safety.
Applications for these switches include
promoting energy savings in equipment
(by reducing power consumption when
OA equipment is in standby mode, for
example), preventing fires caused by
overheating of a heater inside equipment,
preventing electrical leaks, and automati-
cally turning off the power if the unit tips
over or is shaken.These switches feature
a built-in electromagnetic reset function
The switch uses our own proprietary
mechanism that provides an excellent
ability to withstand inrush current is
employed.
Inrush current rating (IEC65) : 160A (nor-
mally 16A at 125V AC), 10,000 times
6. Approved under major international
safety standards.
Stroke
3. CT terminals adopted for coil termi-
nals
These switches can be used with AMP's
CT connectors, which are widely used for
wiring connections in OA equipment,
UL, cUL, TÜV and SEMKO approved.
OPERATING PRINCIPLE
• Manual operation is a repetition of (A) and (B) .
This operation is independent of the electromagnetic reset function.
• The reset mechanism operates only when an electromagnetic reset has occurred. (C)
Contact
ON
OFF
Manual operation
(A)
(B)
Manual operation
Iron core
Manual opening/closing
Return spring
Permanent
magnet
(C)
Flips actuator
Electromagnetic reset
Coil
Coil terminal
Electromagnetic reset mechanism
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SPECIFICATIONS
1. Contact rating
Motor load
(EN61058-1)
(pf = 0.6)
Resistive load
(pf = 1)
Voltage
Inrush load
125V AC
125V AC
16A
10A
—
160A (8.3ms)
—
4A
Remark: The motor load is in accordance with EN61058-1. Inrush current can be switched up to the value of 6 times the indicated rating.
2. Coil rating
Nominal Voltage
*(Max. 10 sec)
Drop-out voltage
(at 20°C 68° F)
Nominal operating current
[±10%] (at 20°C 68° F)
Coil resistance
[±10%] (at 20°C 68° F)
Maximum voltage
(Max. 1 sec)
Max.4.5V
Min.0.5V
5V DC
12V DC
24V DC
725mA
300mA
150mA
6.9Ω
40Ω
5.5V
Max.10.8V
Min.1.2V
13.2V
26.4V
Max.21.6V
Min.2.4V
160Ω
Remark: If the rated voltage is applied to the coil for more than ten seconds or the maximum voltage is applied for more than one second, coil perfor-
mance will deteriorate.
3. Characteristics
Min.104
(at 7 cpm.,at rated load)
Manual operation
Electrical life
Min.103
Coil operation
(at 7 cpm.,at rated load)
Min.5×104(at 7 cpm. 5A 125V AC resistive load)
Mechanical life
Min.5×104(at 20 cpm.)
Initial contact resistance
(By voltage drop at 1A, 2 to 4V DC)
Max. 100mΩ
Initial insulation resistance
Min. 100mΩ (at 500V DC measured by insulation resistive meter)
Between contacts
2,000 Vrms
4,000 Vrms
Initial breakdown voltage
Ambient temperature
Between coil and contact
0°C to +60°C
32° F to +140° F
(Not freezing below 0°C 32° F)
Ambient humidity
Max. 85% R.H.
Vibration resistance
10 to 55 Hz at single amplitude of 0.75mm
Min.294m/s2{30G}
Functional
Destructive
(Contact opening Max. 1ms)
Shock resistance
Min.980m/s2{100G}
.250 Quick-connect terminal Min. 98N{10kgf}/min.
(Pull & push direction)
Tensile terminal strength
Actuator strength
39.2N{4kgf} for 1min. operating direction
Max. 100ms (at rated voltage)
Contact release time
Initial operating force
* Reference value
4.9N or less (Max. 500gf or less)
Setting force after reset has been released: Max. 6.86N or less (Max. 700gf or less)
Flame retardancy
Tracking resistance
UL94V-0
Min. 175
Single pole, single throw: Approx. 17g .60oz
Single pole, double throw: Approx. 19g .67oz
Double pole, single throw: Approx. 20g .71oz
Unit weight
Remark: Test conditions are in accordance with EN61058-1,UL1054 and JIS C 6571
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DIMENSIONS
Double pole (ON-OFF)
Wiring diagram(Bottom view)
Single pole (ON-OFF)
ON (set): 1-2
25
Single pole (ON-ON)
.984
22+0
−0.2
.866+0
−.008
32
1.260
19.7
.776
8.6
.339
Reset: 1-4 closed
Set: 1-2 closed
2
.079
16
.630
Double pole (ON-OFF)
φ1.75
φ.069
10.6
.417
13.5
.531
0.8
.031
ON (set): 1-2 closed
3-4 closed
6.35
.250
(11.3)
(.445)
4.4
.173
15
18.3
.591
.720
29.8±0.3
21.7±0.25
.854±.010
1.173±.012
Diagram of recommended locations for
panel mounting holes
Suitable connector: CT connector
R Max. 01
X
Opening radius
Y
Edge
Panel thickness
X
Y
1 to less than 1.8
.039 to .071
30.4 +0
–0.1
+0
22.0+0.1
–0
+.004
1.197
.866
–.004
–0
1.8 to 2.3
.071 to .091
31.1 +0
–0.1
22.0+0.1
–0
+0
+.004
1.224
.866
–.004
–0
The opening radius from when
the panel was processed should
be on the front side of the panel
Remark: Contact us if you are considering
using a panel of other than the rec-
ommended size and shape.
Remarks: 1. The external dimensions and mounting dimensions for the single pole, single throw
type and the single pole, double throw type are the same as those for the double pole,
single throw type indicated above.
2. The figures show the double pole, single throw (ON-OFF) type as an example.
The contact terminals are 1, 2, 3, and 4.
In the case of the single pole, single throw (ON-OFF) type, the contact terminals are 1
and 2.
In the case of the single pole, double throw (ON-ON) type, the contact terminals are
1, 2, and 4.
There are no other terminals.
Refer to the internal wiring diagram.
3. The coil is a polarized coil; coil terminal 5 is positive and coil terminal 6 is negative.
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NOTES
1. Operating voltage application time
If the rated voltage is applied to the coil
for more than 10 seconds or the maxi-
mum voltage is applied for more than 1
second, coil performance may deterio-
rate.
(3) Use a receptacle that is compliant
with JIS C 2809.
10.This product is not hermetically
sealed, so its performance could dete-
riorate under certain ambient condi-
tions. Avoid using and storing these
switches in a location where they will
be exposed to corrosive gases, sili-
con, or high dust levels, all of which
can have an adverse effect on the con-
tacts. In addition, because these
switches contain permanent magnets,
avoid using and storing these
In addition, there is some deviation
regarding the insertion force depending
on the model used from different manu-
facturers, so the insertion force should be
checked under realistic conditions.
(4) Use AMP's CT connector for the coil
terminals.
6. Because special receptacle termi-
nals are used for the contact terminals
and the common terminals, do not
attempt to solder them. Doing so
could melt plastic components and
otherwise harm the performance of
the switch
7.The terminals should be connected
in such a way that they are not under
constant stress from the connecting
wires.
8.Take care not to drop the product as
it may impair performance.
2.The shape of the mounting panel
should be as recommended in the
dimensions diagram.
Contact us if you are considering using a
panel of other than the recommended
size and shape.
3.The mounting panel should be made
of SPCC. If a different material is used,
its adhesion to the switch unit may be
not be as strong. Check this on site if
necessary.
4. Note that the actuator could pop out
of the switch housing if 19.6N (2kgf) or
more of force is applied to the side of
the actuator.
switches in a location where metallic
dust, etc., is present.
11.When these switches are used with
weak currents of 500mA or less, a
layer of material on the surface of the
contacts may cause contact instabil-
ity. Check and evaluate this possibility
before using these switches under
such conditions.
12. When using an ON-OFF type
switch with no (|O) indication on the
actuator, the "OFF" position should be
indicated on the set in which the
switch is installed.
5.
(1) When connecting the tab terminals,
use a .250 receptacle and insert the ter-
minals straight in.
9. Resistance to chemicals
To clean the switch unit, use a neutral
detergent diluted with water.
If you insert them at an angle, the termi-
nals could catch on the opening and will
require greater insertion force.
(2) The coil terminals have specific polar-
ities. Make sure you connect them cor-
rectly.
Do not use acidic or alkaline solvents as
they may damage the switch.
Furthermore, be careful not to get any of
the detergent solution inside of the switch
while cleaning it.
13.To assure reliability, check the
switch under actual loading condi-
tions. Avoid any situation that may
adversely affect switching perfor-
mance.
COIL TERMINAL CONNECTOR
Because CT terminals are used for the
coil terminals, AMP's CT connector can
be used.
AMP's CT connector
Remark: We do not sell this type of connector.
Questions concerning this connector
should be directed to the manufac-
turer.
receptacle socket
Pressure welding type:
173977-2: for AWG26, 28
2-179694-2: for AWG24
Crimping type:
179228-2
12/1/2002
All Rights Reserved, © Copyright Matsushita Electric Works, Ltd.
03/2005
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