| 511 | Electrical Supplies | Company Product |
| 512 | Electrical Supplies Manufacturers | Company Product |
| 513 | Electrical Supplies Retailers | Company Product |
| 514 | Electrical Supplies Wholesalers | Company Product |
| 515 | Electrical Switchboard Cabinets, Casings & Enclosures | Company Product |
| 516 | Electrical Switchboard Mattings | Company Product |
| 517 | Electrical Switchboards | Company Product |
| 518 | Electrical Switches | Company Product |
| 519 | Electrical Switchgears | Company Product |
| 520 | Electrical System Diagnostic Tool | Company Product |
| 521 | Electrical Systems | Company Product |
| 522 | Electrical Tag Out | Company Product |
| 523 | Electrical Tapes | Company Product |
| 524 | Electrical Terminal Blocks | Company Product |
| 525 | Electrical Test Equipment | Company Product |
| 526 | Electrical Tester | Company Product |
| 527 | Electrical Testers | Company Product |
| 528 | Electrical Testing Equipment | Company Product |
| 529 | Electrical Testing Tool | Company Product |
| 530 | Electrical Tools | Company Product |
| 531 | Electrical Trunkings | Company Product |
| 532 | Electrical Voltage Regulators & Stabilizers | Company Product |
| 533 | Electrical Wire & Cable Harnesses | Company Product |
| 534 | Electrical Wire Harnesses | Company Product |
| 535 | Electrical Wire Stripper | Company Product |
| 536 | Electrical Wiring Products | Company Product |
| 537 | Electrical Work | Company Product |
| 538 | Electrical Works | Company Product |
| 539 | Electrical Works Services | Company Product |
| 540 | Electrically Heated Boilers | Company Product |