| 335311 |
Burner ignition transformers manufacturing |
| 335311 |
Control transformers manufacturing |
| 335311 |
Current limiting reactors, electrical, manufacturing |
| 335311 |
Distribution transformers, electric, manufacturing |
| 335311 |
Electric furnace transformers manufacturing |
| 335311 |
Feeder voltage regulators and boosters (i.e., electrical transformers) manufacturing |
| 335311 |
Fluorescent ballasts (i.e., transformers) manufacturing |
| 335311 |
Fluorescent lighting transformers manufacturing |
| 335311 |
Generator voltage regulators, electric induction and step-type (except engine electrical equipment), manufacturing |
| 335311 |
Instrument transformers (except complete instruments) for metering or protective relaying use manufacturing |