01 March 2022
Issue:Product Design FeatureProduct Line:General Duty Safety SwitchesResolution:Lock OFF:
Provision to padlock the operating handle in the OFF position is standard on all general duty safety switches.Lock ON:
There are NO provisions available, either factory or field modified, on ANY Series E or prior design series.
There are provisions to padlock the handle in the ON position provided on Series F switches (field modification required). This will be subject to local code regulations - consult local authorities for interpretation. On Series F switches, the lockplate on the side of the switch next to the operating handle will have a small center punch mark towards the top of the lockplate. This center punch mark may be drilled out in the field to accommodate a padlock.NOTE:
Drilling a hole in the painted steel lockplate will expose unpainted steel, which should be treated (or touched up) with paint. Square D does offer the gray (ANSI 49) paint in a spray can, catalog number PK49SP.