Abstract: To prevent arcing during an electrical brazing operation, the voltage drop across the brazing electrodes is sensed. When this voltage drop exceeds a predetermined threshold level due to arcing, a relay in a control circuit is picked up and its normally closed contacts open to interrupt the energization circuit for a brazing current contactor relay. The control circuit also is equipped to inhibit brazing if a discontinuity exists in its electrical connection across the electrodes. Also disclosed is a pistol grip electrical brazing tool having its electrode supporting and manipulating elements shunted from the brazing current carrying paths.