- Battery chargers, rectifying or nonrotating
- Capacitors, a.c.: for motors and fluorescent lamp ballasts
- Capacitors, except electronic: fixed and variable
- Condensers for motors and generators
- Condensers, except electronic: fixed and variable
- Current collector wheels for trolley rigging
- Electrochemical generators (fuel cells)
- Inverters, nonrotating: electrical
- Mercury arc rectifiers (electrical apparatus)
- Power conversion units, a.c. to d.c.: static – electric
- Rectifiers (electrical apparatus)
- Series capacitors, except electronic
- Thermoelectric generators
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