The AJ8 switches are available with five
different types of terminals:quick-connect
terminals, soldering terminals, PC board
terminals, right angle terminals and left
angle terminals.
5. Eight standard actuator colors
White, black, red, dark gray, light gray,
blue, green, yellow
6. Cadmium-free contact compatibility.
PRECAUTIONS WHEN
USING CADMIUM-FREE
CONTACT TYPE
Models with cadmium-free contacts have
been introduced in order to reduce
environmentally harmful substances. (“F”
is affixed to the end of the part number.)
We ask customers who are currently
using products with cadmium-containing
contacts (no “F” at the end of the part
number) to please make the switch to
models with cadmium-free contacts.
When switching, operating life may differ
depending on the load. Please be sure to
verify this by conducting an evaluation
using actual equipment.
CONSTRUCTION
Case
Snap-in Clip
Force
Stroke
Actuator
Contact gap (more than 3mm)
The EN60950 (intended for office automation equipment)
conforms with a 3mm gap.
When directly opening or closing the primary power supply
side, a contact gap of at least 3mm is required in order to
ensure safety.
Number of poles and Operation
1: 1-pole, single throw (ON-OFF)
2: 2-pole, single throw (ON-OFF)
Terminal shape
0: .250 Quick-connect terminal
1: Soldering terminal
2: PC board terminal
3: PC board right angle terminal (for standard actuator only)
4: PC board left angle terminal (for standard actuator only)
Actuator indication
0: No indication
1: indication
2: indication
Actuator color
W: White B: Black R: Red Z: Dark gray H: Light gray L: Blue G: Green Y: Yellow
Flange color
Nil: Black (standard color)
(Custom ordered color: W: White, R: Red, Z: Dark gray, H: Light gray, L: Blue, G: Green, Y: Yellow)
Insulation guard
Nil: Short guard type
T: Long guard type (.250 Quick-connect terminal and soldering terminal of standard actuator only)
F: Cadmium-free product
Remarks: 1. Please consult us for details concerning different flange colors.
2. “I O” is engraved on all flanges.
3. The color of indication on the actuator:
• White actuator: black
• Others: white
Remark 1)
PRODUCT TYPES
1. Standard actuator type
(1) Without indication on actuators
Te r minal shapePolesOperating types
.250 Quick-connect terminal
Soldering terminal
PC board terminal
PC board right angle terminal
PC board left angle terminal
Remarks: 1. A letter indicating the actuator color is entered in place of asterisk. (W: White, B: Black, R: Red, Z: Dark gray, H: Light gray, L: Blue, G: Green, and Y: Yellow).
Standard flange color is black. For other colors type, they are custom ordered. For requests of other flange color, please enter the following letter before the “F”
in the part number. (W: White, R: Red, Z: Dark gray, H: Light gray, L: Blue, G: Green and Y: Yellow)
2. Long guard type is available for .250 Quick-connect terminal and soldering terminal type. When ordering, please add a “T” before the “F” at the end of the part
number.
3. The color of indication on the actuator:
• For white actuator: black
• For others: white
4. They come with a stamp indicating international standards without your request.
5. Note that the position of the I mark on the flange is used as a reference for left angle and right angle terminals as shown in the diagram below.
Remarks: 1. A letter indicating the actuator color is entered in place of asterisk. (W: White, B: Black, R: Red, Z: Dark gray, H: Light gray, L: Blue, G: Green, and Y: Yellow).
Standard flange color is black. For other colors type, they are custom ordered. For requests of other flange color, please enter the following letter before the “F”
in the part number. (W: White, R: Red, Z: Dark gray, H: Light gray, L: Blue, G: Green and Y: Yellow)
2. Long guard type is available for .250 Quick-connect terminal and soldering terminal type. When ordering, please add a “T” before the “F” at the end of the part
number.
3. The color of indication on the actuator:
• For white actuator: black
• For others: white
4. They come with a stamp indicating international standards without your request.
5. Note that the position of the I mark on the flange is used as a reference for left angle and right angle terminals as shown in the diagram below.
Remarks: 1. A letter indicating the actuator color is entered in place of asterisk. (W: White, B: Black, R: Red, Z: Dark gray, H: Light gray, L: Blue, G: Green, and Y: Yellow).
Standard flange color is black. For other colors type, they are custom ordered. For requests of other flange color, please enter the following letter before the “F”
in the part number. (W: White, R: Red, Z: Dark gray, H: Light gray, L: Blue, G: Green and Y: Yellow)
2. The color of indication on the actuator:
• For white actuator: black
• For others: white
3. They come with a stamp indicating international standards without your request.
Initial insulation resistance (Between terminals)Min. 100 MΩ (at 500V DC measured by insulation resistive meter)
Initial breakdown voltage (Between terminals)2,000 Vrms detection current: 10 mA
Initial contact resistance (By voltage drop at 1A, 2 to 4V DC)Max. 100mΩ
Temperature rise
Vibration resistance10 to 55 Hz at double amplitude of 1.5mm
Shock resistanceMin. 490m/s2{50 G}
Actuator strength40 N {4.08kgf} for 1 minute (operating direction)
Te r minal strength (.250 Quick-connect terminal)100 N {10.2kgf} for 1 minute or more (Pull & push direction)
Ambient temperature–25°C to +85°C (Not freezing below 0°C)
Flame retardancyUL94V-0
Tr acking resistanceMin. 175
Operating force
(reference characteristics)
Contact materialAgSnO2 alloy
Remark: Test conditions are in accordance with EN61058-1, UL1054 and JIS C 6571.
terminal type and PC board terminal type
are the same as those of standard actuator
type.
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AJ8 (J8)
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0
NOTES
1. Switch mounting
Mount the switch with the hole cutting
dimensions shown in the dimensions.
Contact us if you are considering using a
panel of other than the recommended
size and shape.
2. Regarding fastening lead wires to
terminals
1) When connecting the tab terminals,
use a .250 Quick-connect and insert the
terminals straight in.
If they are skewed, the terminals will
require excessive insertion force.
In addition, there is some variation in the
insertion force required for different
receptacles from different manufacturers,
so confirm how much force is needed
under actual conditions.
Do not solder wires onto tab terminals.
2) With manual soldering: Complete the
soldering connection work within 3
seconds with the tip of the soldering iron
(60W soldering iron) at a temperature of
420°C or lower, and take care not to
apply any force to the terminal area.
Avoid touching the switch with soldering
iron.
Soldering position
When wrapping or soldering a wire
around a terminal, do so in the shaded
area indicated in the diagram at left.
Contact terminal and ground terminal
Refer to the diagram above, “soldering
position,” for details on the position where
a wire should be soldered to a terminal.
When soldering PC board terminals,
keep soldering time to within 5 s at 270°C
soldering bath or within 3 s at 350°C
soldering bath.
3) The terminals should be connected in
such a way that they are not under
constant stress from the connecting
wires.
4) Terminal material is copper alloy which
may discolor due to finger’s oil or after a
long time. But that discoloration does not
effect actual performance.
3. Resistance to chemicals
To clean the switch unit, use a neutral
detergent diluted with water.
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.
4. 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.
5. Take care not to drop the product as
it may impair perfomance.
REFERENCE
1. Outline of UL1054 test
Overload test AJ8: 20A 250V AC
(Power factor 0.75 to 0.8)
50 operation
Endurance test AJ8: 16A 250V AC
(Power factor 0.75 to 0.8)
3
6×10
operation
After testing, temperature rise of
terminals should be less than 30°C and
no abnormality should be observed in
characteristics.
2. Outline of EN61058-1 test
After switching 5 × 10
3
times on the
above load condition at both 85 °C and
25±10°C, temperature rise of terminals
should be less than 55°C and no
abnormality should be observed in
characteristics.
50 to 100ms
24A
2 sec.
J8: 16A
4 sec.
AC: 250V
(Power factor 0.6)
INTRODUCTION TO 4P CONNECTORS FOR THE AJ8 SWITCH
(produced by Nippon Tanshi co.,Ltd)