| ? FTB1-i*(Front & Rear access) |
| - Up to 480V, 100kA, 4000A |
| - W26”(C/D-Frame), W30”/36”(E-Frame) W44”(G-Frame) |
| ? FTB1-G*(Front & Rear access) |
| - Up to 480V, 100kA, 4000A |
| - W28”/36”/42”/46”/50” |
| ? FTB2-i*(Rear access) |
| - Up to 480V, 100kA, 6000A |
| - W32”(D/E-Frame), W44”(G-Frame) |
| ? FTB2-G*(Front & Rear access) |
| - Up to 480V, 100kA, 6000A |
| - W28”/36”/42”/46”/50” |
| ? Non-AR only |
| ? NEMA Type 1 |
| ? UL 891 |
