Panasonic Corporation Automation Controls Business Unit industrial.panasonic.com/ac/e/
EP (AEP)
ASCTB3E 201202-T
For Cautions for Use.
7. Permeation life of internal gas
This relay uses a hermetically
encased contact (capsule contact)
with gas inside. The gas has a
permeation life that is affected by the
temperature inside the capsule
contact (ambient temperature +
temperature rise due to flow of
electrical current). Therefore, please
do not exceed the operation ambient
and storage ambient temperatures
given in the specifications.
8. Do not disassemble the relay.
Please note that disassembling the
relay will invalidate the warranty.
9. If the power is turned off and then
immediately on after applying the
rated v oltage (current) continuously to
the relay’s coil and contact, the
resistance of the coil will increase due
to a rise in the coil temperature. This
causes the pick-up v oltage to rise, and
possibly exceed the rated pick-up
voltage. In these circumstances, take
measures such as reducing the load
current, limiting the duration of
current flow, and applying a coil
voltage higher than the rated
operating voltage.
10. Pure DC current should be applied
to the coil. If it includes ripple, the
ripple factor should be less than 5%.
However, check the actual circuit
since the characteristics may be
slightly different. The power supply
waveform supplied to the coil should
be rectangular. Also, the 300A type
has a built-in dedicated drive cir cuit. It
may not operate normally unless the
rise time is 10 ms or less.
11. Don’t exceed maximum coil
voltage. Exceeding maximum
allowable coil voltage on continuous
basis will damage the relay and could
case failure.
12. If you will be using with a load
voltage that exceeds 400 V DC, please
be sure to verify operation on the
actual device, referring to the
switching life curves (reference data).
You must absolutely avoid continual
use in which the load current exceeds
the rated value. This will cause
abnormal heating.
13. The rated control capacity and life
are given as general guides.
It is important to conduct sufficient
tests on the actual device, because
contact properties and working life
will differ considerably depending on
the type of load and conditions.
14. Main contact ratings in the ratings
apply to when there is a resistive load.
If you are using an inductive load (L
load) such that L/R > 1 ms, add surge
protection in parallel with the
inductive load. If this is not done, the
electrical life will decrease and cut-off
failure may occur.
15. Be careful that foreign matter and
oils and fats kind don’t stick to the
main terminal parts because it is likely
to cause terminal parts to give off
unusual heat. Also, please use the
following materials for connected
harnesses and bus bars.
10A TM type:
#187, 0.5 mm board thickness
20A TM type:
#250, 0.8 mm board thickness
tab terminal (JIS C289-1999 compliant,
flat type connection terminal)
Harness nominal cross-sectional area
Load input terminal side;
10A TM type: min. 2.0 mm2
20A TM type: min. 3.0 mm2
Coil input terminal side;
10A and 20A TM types: min. 0.3 mm2
80A type: min. 15 mm2
300A type: min. 100 mm2
16. Use 40 to 70N or 50 to 80N of force
as a guide to fasten the terminal
connected to the 10A TM and 20A TM
types. Please use caution when
inserting or removing the terminal as
the relay tab terminal may cause
injuly. Also, unstable conductivity and
abnormal terminal heating may occur;
therefore, please check that there is
no deformation of or foreign objects
on the faston terminals (blade
receptacle) you will be connecting.
Use JIS C2809 (or IEC60760) certified
products.
17. Place the PC board mount type
(10A PC board type) securely by hand
soldering after attaching it using M4
screw. Don’t submerge assembled
board in cleaning solvent or water.
Also, be careful not let flux overflow
up from the PC board or adhere to the
base of the relay.
Recommended hand soldering
conditions
• Soldering iron: 30 to 60 W
• Tip temperature: 400°C 752°F
• Solder time: within approx. 5 seconds
18. Make sure the power is turned off
when wiring.
19. Incorrect wiring may cause
unexpected malfunction and failure.
20. Regarding AC cutoff, although
there is no contact polarity, generally
it is thought that the electrical life will
shorten due to cutoff in the reverse
direction, compared to DC cutoff.
Confirm electrical life using actual
load. In the case of DC cut-off, please
note the contact polarity.
21. Lead-free solder (tin, silver and
copper) is used as pre-solder for the
terminals of the PC board mount type
(10A PC board type).
22. The warranted tensile strength of
the female connector lead wire used
for connection that comes with the
80A and 300A connector type when
attaching it to the relay body is 10N.
Avoid excessive tension as this is a
cause of broken wires and damage.
Also, insert the female connector
deeply and make sure the connection
is secure.
23. Condensation will occur during
sudden temperature changes in hot
and humid environments. Caution is
required, because condensation will
cause a decrease in the insulation
resistance between the terminals.