J7TKN-B-18 Omron, J7TKN-B-18 Datasheet - Page 80

• 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

Characteristics
The time/current characteristic, the current limiting characteristics
and the I²t characteristics were determined in accordance with
DIN VDE 0660 and IEC 60 947.
The tripping characteristic of the inverse-time delayed overload
releases (thermal overload releases or ’a’ releases) for DC and AC
with a frequency of 0 to 400 Hz also apply to the time/current charac-
teristic.
The characteristics apply to the cold state. At operating temperature,
the tripping times of the thermal releases are reduced to approxi-
mately 25 %.
Under normal operating conditions, all three poles of the device must
be loaded. The three main conducting paths must be connected in
series in order to protect single-phase or DC loads.
With 3-pole loading, the maximum deviation in the tripping time for 3
times the setting current and upwards is ± 20 % and thus in accor-
dance with DIN VDE 0165.
The tripping characteristics for the instantaneous, electromagnetic
overcurrent releases (short-circuit releases or ’n’ releases) are based
on the rated current I
ting range for circuit-breakers with adjustable overload releases. If
the current is set to a lower value, the tripping current of the ’n’
release is increased by a corresponding factor.
The characteristics of the electromagnetic overcurrent releases
apply to frequencies of 50/60 Hz. Appropriate correction factors must
be used for lower frequencies up to 16 2/3 Hz, for higher frequencies
up to 400 Hz and for DC.
The characteristic shown here is a schematic representation of cir-
cuit-breakers for all ranges.
Time/current characteristics, current limiting characteristics and I²t
characteristics are available on request.
■ Wiring diagrams
H-80
Circuit-breaker
J7MN
Signalling switch
J73MN-T-11S
Motor Protection Circuit Breaker (MPCB)
n
, which is also the maximum value of the set-
J73MN-11F
J74MN-U
Transverse auxiliary contact block
Undervoltage release
J7MN
Opening Time
Lateral auxiliary contact block
J73MN-11S
Shunt release
J74MN-S
2-pole
load
Class 10
3-pole
load
Class 10
Current