Mitsumi electronic IB-1500875(ENG)-E ユーザーズマニュアル
MDS-D/DH Series Specifications Manual
6-2 Selection of circuit protector and contactor
6 - 9
6-2-2 Selection of contactor
Select the contactor selection current that is calculated from the rated output and the nominal input voltage
(voltage supplied to the power supply unit) as in the expression below. And then select the contactor whose
conventional free-air thermal current meets the contactor selection current.
< MDS-D Series >
Contactor selection current [A]=
(Contactor selection current for 200V input [A] / Nominal input voltage [V]) × 200 [V]
Selection of contactor for 200V input
Option part: A contactor is not prepared as an NC unit accessory, so purchase the part from your dealer, etc.
< MDS-DH Series >
Contactor selection current [A] =
(Contactor selection current for 380V input [A] / Nominal input voltage [V]) × 380 [V]
Selection of contactor for 380V input
Option part: A contactor is not prepared as an NC unit accessory, so purchase the part from your dealer, etc.
Unit type
MDS-D-CV-
MDS-D-CV-
37
75
110
185
300
370
450
550
Rated output
3.7kW
7.5kW
11kW
18.5kW
30kW
37kW
45kW
55kW
Contactor selection
current for 200V input
current for 200V input
15A
31A
45A
76A
124A
153A
186A
224A
Selection example of contactor
(Mitsubishi Electric Corp.)
(Mitsubishi Electric Corp.)
S-N12
-AC200V
S-N25
-AC200V
S-N25
-AC200V
S-N65
-AC200V
S-N80
-AC200V
S-N150
-AC200V
S-N150
-AC200V
S-N180
-AC200V
Conventional freeair thermal
current of the selection example
of contactor
current of the selection example
of contactor
20A
50A
50A
100A
135A
200A
200A
260A
(Example)
Select a contactor for using the MDS-D-CV-110 with a 220V nominal input voltage.
Contactor selection current = 45/220 × 200 = 40.9[A]
According to the table above, select "S-N25-AC200V".
Select a contactor for using the MDS-D-CV-110 with a 220V nominal input voltage.
Contactor selection current = 45/220 × 200 = 40.9[A]
According to the table above, select "S-N25-AC200V".
Unit type
MDS-DH-CV-
MDS-DH-CV-
37
75
110
185
300
370
450
550
750
Rated output
3.7kW
7.5kW
11kW
18.5kW
30kW
37kW
45kW
55kW
75kW
Contactor selection
current for 380V input
current for 380V input
8A
16A
24A
40A
65A
80A
98A
119A
163A
Selection example of contactor
(Mitsubishi Electric Corp.)
(Mitsubishi Electric Corp.)
S-N12-
AC400V
S-N12-
AC400V
S-N21-
AC400V
S-N25-
AC400V
S-N50-
AC400V
S-N65-
AC400V
S-N65-
AC400V
S-N80-
AC400V
S-N150-
AC400V
AC400V
Conventional freeair thermal
current of the selection example
of contactor
current of the selection example
of contactor
20A
20A
32A
50A
80A
100A
100A
135A
200A
(Example)
Select a contactor for using the MDS-DH-CV-450 with a 480V nominal input voltage.
Contactor selection current = 98/480×380 = 77.6[A]
According to the table above, select "S-N50-AC400V".
Select a contactor for using the MDS-DH-CV-450 with a 480V nominal input voltage.
Contactor selection current = 98/480×380 = 77.6[A]
According to the table above, select "S-N50-AC400V".
1. Use an alternating contactor.
2. If the contactor selection current is 20A or less, select the S-N12 product for the contactor.
3. Select a contactor whose excitation coil does not operate at 15mA or less.
POINT