Awak sekering digawe saka tabung porselen kekuatan tinggi 95% AL203. Pasir kuarsa kemurnian tinggi lan lembaran perak/tembaga murni 99,99% disegel lan dilas kanthi kenceng ing njero tabung. Permukaan kontak dilapisi perak.
| Model | Ukuran sekering (mm) | Wong Polandia | Tegangan sing dirating (V) | Arus sing dirating (A) |
| Basis DC RT18-32 | 10X38 | 1/2/3/4 | DC1000V | 32 |
| CJPV-32L | 10X85 | 1 | DC1500V | 32 |