Specifications

- 12 -
BOSS Inverter Mig 250 Operating Manual
Figure 3
Pin WF2 function 4 inch spool gun function
A Torch switch input Torch switch input
B Torch switch input Torch switch input
C Current regulation
D Current regulation
E Current regulation
F Short line Short line
G Short line Short line
H Short line
I Spot switch
J Spot switch
K Solenoid valve
L Solenoid valve
M WF2 motor Spool gun motor
N WF2 motor Spool gun motor
Table 4
WARNING
When the welder is connected to the primary supply voltage, the internal electrical
components maybe at primary potential with respect to earth.