The IS-120A spot welders have a secondary current output range of 4 - 14,000 amps and a footprint of just 7.3 in x 6.6 in x 24.7 in. They are the only large-scale inverter spot welders on the market which offer a choice of three feedback modes: constant power, constant voltage, or constant current. The IS-120A spot welders are also available with an optional data entry panel (MA-627A). The IS-120A spot welders can be used with perform both spot and projection welds. Spot welders are also ideal for difficult to weld material combinations.