| 361 / | HD | ELECTRICITY: ELECTRICAL SYSTEMS AND DEVICES | 
| 1 | DF | SAFETY AND PROTECTION OF SYSTEMS AND DEVICES {32} | 
| 117 | DF | .~ High voltage dissipation (e.g., lightning arrester) {10} | 
| 124 | DF | .~.~ Thermal (e.g., fusible, bimetallic) {1} | 
| 125 |  | .~.~.~ With cutout (e.g., blowout type) |