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H series
main circuit
terminals
100C,125C
150C
200C,250C
300C,400C
600C
800C
8C～400C
aux. and coil
terminals
600C,800C
aux. terminal of
8C～600C
relay
Even a terminal screw of the same size is different from Contactor and Thermal Relay.
Please be careful so that screws are not replaced on the occasion of wiring.
When do not use an appropriate screw, it is not tightened, and a case may be damaged.
4．Using
Normal service condition
(1) Ambient temperature ：－5℃ to 40℃ (usable up to 50℃ without enclosure)(HS series is 55℃)
(2) Relative humidity
(3) Altitude
(4) Atmosphere
Don't touch electric connecting, or you should be damaged by electric-shock.
●
Check the wire is anenergized at the time of maintenance, or you should be damaged by electric-shock.
●
Don't operate with opening a cover of the contactor, or short circuit should be made.
●
At using for reversible type, electrical interlock must be needed.
●
A metallic case must be connected to the earth.
●
For thermal overload relay, setting current must be adjusted to rating of motor by turning of current
●
adjusting knob. Don't over-turn adjusting knob.
5．Maintenance
Check whether screw are fully tightened. If a loose, tighten
●
more.
Check whether foreign substances such as a washer, wire
●
waste etc., have infillrated the contactor by manual
operation.
During trial running, check whether there occurs abnormal
●
noise, abnormal smell or abnormal arcing etc.
Check whether contacts are abnormally worn after loosed
●
screws and removed cover of the contactor.
Eliminate dropped foreign substances such as dust, chip etc.
●
on each portion.
Don't paint oil on cores of the contactor.
●
Even if contacts are somewhat blackened, no trouble occurs.
●
Even if only one contact of three phase is worn, the contacts of all phases must be replaced at the same
●
time.
At replacing, check the wire is anenergized.
Dust from worn contact should be eliminated after removed the worn contact.
●
Table2 Wire size and tightening torque
Frame(Contactor)
HS series
RH series
XS4, 8, 10
20
25
35, 50
25N
65C
50N
80C
60N
120N
200N
XS4～50 25N～200N
XS4～50
：45％ to 85％
：2,000ｍ or lower
：must be free from corrosive gas, combustible gas, dust, vapor, salt, etc.
Thermal Relay
screw
size
1E, 2E
12B
M3.5
20B
M4
M4
25B
M5
50B
M5
M5
M5
80B
M6
M6
150B
M8 Bolt
M8 Bolt
M8 Bolt
M10 Bolt
400B(RC240A or lower)
M12 Bolt
400B(RC240A upper)
M12 Bolt
M16 Bolt
M3.5
aux.；M4
coil;M3.5
12B～400B
M3.5
Fig1 Operative portion of Thermal Relay
max. width
Appropriate
max. wire
of solderless
size (mm
)
terminal
2
(mm)
2(φ1.6)
7.8
3.5(φ2)
9
3.5(φ2)
10.5
8(φ2.6)
10
14
13.0
14
13.9
22
16.5
22
16.5
60
22
60
22
80
27
150
37
150
37
200
44
325
55
325
55
2(φ1.6)
7.8
3.5(φ2)
9
2(φ1.6)
7.8
2(φ1.6)
7.8
Test trip lever
Adjusting knob
Reset button
Resetting performed
without opening
the cover.
tightening
torque
(N･m)
0.8～1.0
1.2～1.5
1.2～1.5
2.5～3.5
2.5～3.5
2.5～3.5
2.5～3.5
4.0～5.0
4.0～5.0
10～14
10～14
10～14
15～25
35～45
35～45
35～45
0.8～1.0
1.2～1.5
0.8～1.0
0.8～1.0
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