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Kempact RA
Technical specifications
Kempact
181A
251R, 251A
Connection voltage 1~, 50/60 Hz 230V (±15 %) 1~, 50/60 Hz 240V (±15 %)
Rated power at max. current 50 % ED I1max (180 A) 5 kVA 30 % ED I1max (250 A) 8.5 kVA
Supply current 50 % ED I1max (180 A) 22 A 30 % ED I1max (250 A) 36 A
100 % ED I1eff (140 A) 16 A 100 % ED I1eff (150 A) 17 A
Connection cable H07RN-F 3G1.5 (1.5 mm2, 5 m) H07RN-F 3G2.5 (2.5 mm2, 5 m)
Fuse Type C 16 A Type C
Welding range
20 A
10 V / 20 A – 26 V / 180 A
10 V / 20 A – 29 V / 250 A
Power factor at max. 180 A / 23 V 0.99 250 A / 26.5 V 0.99
Efficiency at 100% ED 140 A / 21 V 0.82 150 A / 21.5 V 0.82
Wire feed speed adjustment range 1.0-14.0 m/min 1.0-18.0m/min
Voltage adjustment range 8.0-26.0V 8.0-29.0V
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 (without gun and cables) 44 kg 44 kg
EMC class A A
Standards: IEC 60974-1, IEC 60974-5, IEC 60974-10, IEC 61000-3-12
Kempact
253R, 253A
323R, 323A
Connection voltage 3~, 50/60 Hz 400V (±15 %) 3~, 50/60 Hz 400V (±15 %)
Rated power at max. current 35 % ED I1max (250 A) 8.5 kVA 35 % ED I1max (320 A) 12 kVA
Supply current 35 % ED I1max (250 A) 11.9 A 35 % ED I1max (320 A) 17.2 A
100 % ED I1eff (150 A) 6.1 A 100 % ED I1eff (190 A) 8.2 A
Connection cable H07RN-F 4G1.5 (1.5 mm2, 5 m) H07RN-F 4G1.5 (1.5 mm2, 5 m)
Fuse Type C 10A Type C 10A
Welding range
10 V / 20 A – 31 V / 250 A
10 V / 20 A – 32.5 V / 320 A
Power factor at max. 250 A / 26.5 V 0.93 320 A / 30 V 0.94
Efficiency at 100% ED 150 A / 21.5 V 0.88 190 A / 23.5 V 0.86
Wire feed speed adjustment range
1.0-18.0m/min
Voltage adjustment range
External dimensions
1.0-20.0m/min
8.0-31.0V
L x W x H
623 x 579 x 1070 mm
8.0-32.5V
L x W x H
623 x 579 x 1070 mm
Weight (without gun and cables) 44 kg 44 kg
EMC class A A
Standards: IEC 60974-1, IEC 60974-5, IEC 60974-10
Kempact 181/251 models include the GT02C,
two roll wire drive unit.
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Kempact RA
Kempact 253/323 models include the Dura-
Torque four roll wire drive unit.
HotSpot™ feature makes metal shrinking and
component heating simple and convenient.