Potentiometer Panel Mounting/Operating Head A potentiometer (not supplied) having a shaft length of 43 to 47mm, and diameter 6.35mm may be mounted into this unit and fixed to a panel The potentiometer is fitted from the rear, and the projecting shaft at the front can be fitted with the operating knob supplied Schneider Electric XB2-B 22mm 22mm dia. fixing hole Suitable hole cutter stock no. 543-585 Up to 6 contact blocks can be fitted in total Operating Temperature Range -25°C to +75°C