Panasonic Corporation Electromechanical Control Business Division
industrial.panasonic.com/ac/e/
Panasonic Corporation 2021
AECTB35E 202110
Notes for Turquoise Switches (BJ, BS, BV type)
CAUTIONS FOR USE (Common for BJ, BS and BV types)
Fastening of the switch body
1) Fasten the switch body onto a smooth surface using the correct
screw as shown in the chart below and tighten it with the prescribed
torque.
The switch case may deform depending on the type of screw (screw
head diameter, etc.), the size of the washer, and the use or non-use
of a washer. Therefore, please confirm the appropriate torque of
actual conditions. Also, it is recommended that adhesive be applied
to lock the screws to prevent loosening of the screws. When doing
so, please be careful not let any adhesive get inside the switch.
Screws
Tightening torque
ABJ (BJ) switches
M1.2
Not more than 0.098 N·m
M2.3
Not more than 0.29 N·m
M3.0
Not more than 0.29 N·m
ABS (BS) switches
M2.3
Not more than 0.29 N·m
ABV (BV) switches
M3.0
Not more than 0.49 N·m
2) Fixed pin type
To secure the switch unit, thermally crimp or press-fit the mounting
pins. If the pins are to be press-fitted, install a guide on the opposite
surface to the mounting pins to prevent them from slipping out of
position and developing play.
3) Be sure to maintain adequate insulating clearance between each
terminal and ground.
4) The positioning of the switch should be such that direct force is not
applied to the pushbutton or actuator in its free position.
The operating force to the pushbutton should only be applied in a
perpendicular direction.
5) The standard value of overtravel used should be within the range of
70% to 100% of the rated OT value.
6) When soldering the BV type turquoise switch or the immersion
protected type of the BJ and BS type switches, the sealing material
sometimes forms a lump or bulge at the base of the terminal or
lead. Be sure to allow enough space for this when attaching the
switch.
Soldering operations
1) Manual soldering: 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.
Please consult us if you intend to use a soldering iron of 60 W or
higher.
2) Terminal portions should not be moved within 1 minute after
soldering.
Soldering time
ABJ (BJ) switches
Within 3 seconds
ABS (BS) switches
Within 3 seconds
ABV (BV) switches
Within 5 seconds
Selection of the switch
Allow for up to 20% variation of the specified characteristics values
to compensate for long term operational wear of the switch in your
design.
Cautions regarding use
1) When switching inductive loads (relays, solenoids, buzzers,
etc.), an arc absorbing circuit is recommended to protect the
contacts.
2) If switching of the contact is synchronized with the phase of the AC
power, reduced electrical life or welded contact may occur.
Therefore, test the switch while it is operating under actual loads for
this condition. If found, you may wish to take corrective action in
your design.
3) In the slow or high speed operating condition, the electrical life
might be greatly reduced depending upon the switching load.
Please consult us before use.
4) Using lever type in do not condition, there is the concern that the
flexible part may be impeded and return movement may not be
possible. In this situation take the following precautions:
• Select a product of higher OF or use a leaf type lever.
• Attach a protective cover to the lever.
5) If the leaf lever type switch is excessively pushed (pushed further
than the operational limit position) or switching is done at high
speed or is accompanied by the impact, the lever will break.
Please be careful. Also, be careful with the short roller lever type
ABV (BV) switch as improper return may result from pressing too
much.
Protection from dust, water and corrosive gas
1) The pin button and the space around the body cap Turquoise
switches are sealed with elastic material, the terminal portion is
integrally molded. This prevents dust entry and protects the switch
against corrosive gases. Wireleaded types are recommended for
applications subject to water or oil splash.
However, avoid soaking these immersion protected types in oil or
water, because those types are not of completely oil tight
construction.
2) Switch operation or rapid temperature change while water droplets
are on the switch may cause the water invasion inside the switch
because of breathing action on condensation.
Especially do not use switch in a bath.
If sources of silicon gas are existing in the vicinity of the switch
(silicon rubber, silicon oil, silicon coating, and silicon filler, etc.),
silicon gas (low molecular siloxane, etc.) will be emitted and it will
get into the product due to the permeability of the plastic.
If the switch is used or stored in such an environment, silicon
compound might generate on the contacts, cause the and faulty
contacting. Therefore, please do not use sources that can emit
silicon gas in the vicinity of the switch.
Do not use in areas where flammable or explosive gases from
gasoline and thinner, etc., may be present.
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