
3 phase models, MVU
Kempact
253 MVU
323 MVU
Connection
voltage
3~, 50/60 Hz
230V –15%…400V +15% 3~, 50/60 Hz
230V –15%…400V +15%
Rated power at
max. current
40% ED I
1max
(250 A, 230 V)
9 kVA
35% ED I
1max
(320 A, 230 V)
13.5 kVA
40% ED I
1max
(250 A, 400 V)
8.5 kVA
35% ED I
1max
(320 A, 400 V)
12.5 kVA
Supply current
40% ED I
1max
(250 A, 230 V)
22.2 A
35% ED I
1max
(320 A, 230 V)
33.3 A
40% ED I
1max
(250 A, 400 V)
12.3 A
35% ED I
1max
(320 A, 400 V)
17.8 A
100% ED I
1eff
(150 A, 230 V)
10.8 A
100% ED I
1eff
(190 A, 230 V)
14.8 A
100% ED I
1eff
(150 A, 400 V)
6.2 A
100% ED I
1eff
(190 A, 400 V)
8.3 A
Connection cable
H07RN-F
4G2.5 (2.5 mm², 5 m)
H07RN-F
4G2.5 (2.5 mm², 5 m)
Fuse
Type C (230V)
16 A
Type C (230 V)
16 A
Type C (400V)
10 A
Type C (400 V)
10 A
Welding range
10V/20A–31V/250A
10V/20A–32.5V/320A
No load voltage
46 V
50 V
Idle power
35 W
35 W
Power factor at
max.
250A/26.5V (230V) 0.94
320A/30V (230V)
0.94
250A/26.5V (400V) 0.93
320A/30V (400V)
0.94
Efficiency at
100% ED
150A/21.5V (230V) 0.79
190A/23.5V (230V) 0.80
150A/21.5V (400V) 0.82
190A/23.5V (400V) 0.83
Wire feed speed
adjustment range
1.0–18.0 m/min
1.0–20.0 m/min
Voltage
adjustment range
8.0–31.0 V
8.0–32.5 V
Filler wires
Fe solid
0.8…1.2 mm
0.8…1.2 mm
Fe cored wires
0.8…1.2 mm
0.8…1.2 mm
Ss
0.8…1.2 mm
0.8…1.2 mm
Al
1.0…1.2 mm
1.0…1.2 mm
Brazing
0.8…1.0 mm
0.8…1.0 mm
Wire spool
max
300 mm / 20 kg
300 mm / 20 kg
Shielding gases
CO₂, Ar, Ar+CO₂ mixed
CO₂, Ar, Ar+CO₂ mixed
External
dimensions
L x W x H
623 x 579 x 1070 mm
L x W x H
623 x 579 x 1070 mm
Weight
Not including gun
and cables
44 kg
Not including gun
and cables
44 kg
Temperature class
F (155 °C)
F (155 °C)
EMC class
A
A
Degree of
protection
IP23S
IP23S