Ceramic Spool Insulator
ANSI C29.3 Class 53
AKRON Porcelain & Plastics Company carries a full product range used for general electrical distribution. AKRON’s porcelain spools meet applicable ANSI standards. The wet process is employed for high voltage applications, the dry process for low voltage applications. Sizing and technical detail are listed below.
Contact sales@akronporcelain.com for your low and high voltage spool needs today!
Dry Process Spools: (low voltage)
| Stock # | Overall Height | Overall Diameter | Groove Radius | Center Hole Diameter |
| 103 | 1-5/8″ | 2″ | 3/8″ | 3/8″ |
| 118 | 2-1/8″ | 2-1/4″ | 9/16″ | 9/16″ |
| 167-A | 2-1/16″ | 2-1/4″ | 1/2″ | 9/16″ |
| 190 | 2-1/8″ | 2-1/4″ | 1/2″ | 5/8″ |
| 649 | 1-13/16″ | 2-1/16″ | 11/32″ | 7/16″ |
| 1074 | 2-1/16″ | 2-1/4″ | 1/2″ | 5/16″ |
| 1072 | 1-5/8″ | 2″ | 5/16″ | 3/8″ |
| 947 | 2-1/16″ | 2-1/4″ | 1/2″ | 7/16″ |
Wet Process Spools: (high voltage)
| Stock # | USA STD Class | Over Height | Overall Diameter | Groove Radius | Center Hole Diameter |
| 1079 | 53-3 | 3-3/16″ | 3″ | 7/16″ | 11/16″ |
| 1080 | 53-1 | 2-1/8″ | 2-1/4″ | 7/16″ | 11/16″ |
| 1081-A | 2-1/8″ | 2-1/4″ | 7/16″ | 9/16″ | |
| 1081-B | 2-1/8″ | 2-1/4″ | 7/16″ | 7/16″ | |
| 1082 | 53-2 | 3″ | 3-1/8″ | 11/16″ | 11/16″ |
| Stock # | 531KG | 532KG | 533KG | 534KG | 535KG |
| ANSI C29.3 Class 53 | 53-1 | 53-2 | 53-3 | 53-4 | 53-5 |
| Mechanical Values Transverse Strength (lbs.) | 2,000 | 3,000 | 4,000 | 4,500 | 6,000 |
| Electrical Values Low Frequency Dry Flashover (kV) | 20 | 25 | 25 | 25 | 35 |
| Low Frequency Wet Flashover, Vertical (kV) | 8 | 12 | 12 | 12 | 18 |
| Low Frequency Wet Flashover, Horizontal (kV) | 10 | 15 | 15 | 15 | 25 |
Industries Served
Electrical Distribution, Foundry, Major Appliance, Commercial Lighting, Water Filtration, Medical, Oil & Gas, Automotive