Mechanical and Electrical Installation                               MD280/MD280N User Manual 
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3.2 Electrical Installation   
3.2.1 Guide to the Selection of Peripheral Electrical Parts 
 
Table 3-1 Guide to the Selection of Peripheral Electrical Parts of MD280 Inverter 
Inverter Model 
Circuit
Breaker 
(MCCB) 
(A) 
Recommend
ed Contactor 
(A) 
Recomme
nded
Input
Side Main 
Circuit
Wire 
(mm²) 
Recomme
nded
Output
Side Main 
Circuit
Wire 
(mm²) 
Recomme
nded
Control
Circuit
Wire (mm²) 
MD280S0.4G 16 10 2.5 2.5 1.5 
MD280S0.7G 16 10 2.5 2.5 1.5 
MD280S1.5G 20 16 4 2.5 1.5 
MD280S2.2G 32 20 6 4 1.5 
MD280T0.7G 10 10 2.5 2.5 1.5 
MD280T1.5G 16 10 2.5 2.5 1.5 
MD280T2.2G 16 10 2.5 2.5 1.5 
MD280T3.7G 25 16 4 4 1.5 
MD280T3.7G/5.5P 32  25  4  4  1.5 
MD280T5.5G/7.5P 40  32  4  4  1.5 
MD280T7.5G/11P 63  40  4  4  1.5 
MD280T11G/15P 63  40  6  6  1.5 
MD280T15G/18.5P 100  63  6  6  1.5 
MD280T18.5G/22P 100  63  10  10  1.5 
MD280T22G/30P 125  100  16  10  1.5 
MD280T30G/37P 160  100  16  16  1.5 
MD280T37G/45P 200  125  25  25  1.5 
MD280T45G/55P 200  125  35  25  1.5 
MD280T55G/75P 250  160  50  35  1.5 
MD280T75G/90P 250  160  70  35  1.5 
MD280T90G/110P 350  350  120  120  1.5 
 
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