J7TKN-B-18 Omron, J7TKN-B-18 Datasheet - Page 96

• Manufacturer Part Number: J7TKN-B-18
• Description: RELAY THERMAL OVERLOAD 13-18A
• Manufacturer: Omron

Specifications of J7TKN-B-18

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: J7TKNB18

■ Technical information
Degree of protection acc. to EN60947
Protection ratings are prefixed by the internationally agreed letters IP
followed by two digits.
1
2
Terminal markings acc. to EN50011
Auxiliary contacts of AC contactors and contacts of contactor relays
and thermal overload relays are particularly marked. The terminal
markings of normally-open contacts are printed as positive figures,
they of normally-closed contacts as negative figures.
This gives a clear indication of the function of the contacts.
The figure below illustrates the determination of terminal markings
for contactors with auxiliary contact blocks.
H-96
1
digit
1
2L
3
4
5
6
st
nd
st
digit:
digit: Pertains to water.
Short description
Protected against
solid objects great-
er than 50 mm
Protected against
solid objects great-
er than 12,5 mm
and against contact
by standard test
finger
Protected against
solid objects great-
er than 2,5 mm
Protected against
solid objects great-
er than 1 mm
Dust protected
Dust tight
Pertains to solid objects
Appendix
The complete terminal marking according
to EN 50011 and EN 50012 results from the
sequence numbers on the contactor relay
or ac contactor (2., 3.) and the function
numbers on the auxiliary contact blocks
(e. g. .1, .2, or .3, .4).
Definition
Excludes solid objects exceeding
50 mm in diameter and protects against
contact with live and moving parts by a
large body surface such as a hand (but
not against deliberate access).
Excludes solid objects exceeding
12,5 mm in diameter and protects
against contact with live and moving
parts by a standard test finger or similar
objects not exceeding 80 mm in length.
Excludes solid objects exceeding
2,5 mm in diameter or thickness.
Excludes solid objects exceeding 1 mm
in diameter or thickness.
and locations that would interfere with
the intended operation of the equip-
ment.
Prevents ingress of dust in quantities
Prevents ingress of dust.
Sequence number
Function number
Resistance to climatic conditions acc. to IEC 68
Open-type devices are climate-resistant in the constant climate
according to IEC 68-2-3 (this is a climate with an ambient tempera-
ture of 40°C and an atmospheric humidity of 90 to 95%).
Enclosed devices are climate-resistant in an alternating climate
according to IEC 68-2-30 (this is a moist alternating climate with a
24-hour cycle between climates with an ambient temperature of
25°C, and an atmospheric humidity of 95 to 100% and an ambient
temperature of 40°C, and an atmospheric humidity of 90 to 96% in
the presence of condensation during rises in temperature).
Data are valid up to an altitude of 2000m above sea level.
Short circuit protection
Back up fuses should be used to protect contactors and starters
against short circuits. For starters the device with the smaller admis-
sible fuse at the main and at the control circuit (contactor or thermal
overload) determines the fuse size.
After a short circuit devices have to be checked for correct operation.
Disconnect power before proceeding with any work on the equipment!
2
digit
1
2
3
4
5
6
7
8
nd
Short description
Protected against-
dripping water
Protected against
dripping water
when tilted up to
15°
Protected against
spraying water
Protected against
splashing water
Protected against
water jets
Protected against
heavy seas
Protected against
the effects of im-
mersion
Protected against
submersion
Definition
Dripping water (vertically falling drops)
shall have no harmful effect.
Vertically dripping water shall have no
harmful effect when the enclosure is tilt-
ed at any angle up to 15° from its nor-
mal position.
Water falling as a spray at an angle up
to 60° from the vertical shall have no
harmful effect.
Water splashed against the enclosure
from any direction shall have no harm-
ful effect.
Water protected by a nozzle against the
enclosure from any direction shall have
no harmful effect.
Water from heavy seas or water pro-
jected in powerful jets shall not enter
the enclosure in harmful quanties.
Ingress of water in a harmful quantity
shall not be possible when the enclo-
sure is immersed in water under stan-
dard conditions of pressure and time.
No ingress of water.