| Spec&Type | Rated voltage | Rated mechanical tensionload | Structure height (mm) | Min arc distance （mm） | Minnominal creepage distance | Full wave lightning impulse withstand voltage (kV) | 1min power frequency wet withstand voltage |
| FNB4-1/70-XX | 1~3 | 70 | 260士10 | 80 | 225 | 45 | 18 |
| FNB4-6/70-XX | 6 | 70 | 300±10 | 120 | 325 | 60 | 25 |
| FNB4-10/40-XX | 10 | 40 | 320±10 | 160 | 425 | 95 | 45 |
| FNB4-10/70-XX | 10 | 70 | 340士10 | 160 | 425 | 95 | 45 |
| FNB4-10/100-XX | 10 | 100 | 370±10 | 160 | 425 | 95 | 45 |
| FNB4-15/70-XX | 15 | 70 | 380±10 | 200 | 525 | 115 | 60 |
| FNB4-20/70-XX | 20 | 70 | 420土10 | 240 | 625 | 150 | 65 |
| FNB4-20/100-XX | 20 | 100 | 450±10 | 240 | 625 | 150 | 65 |
| FNB4-24/70-XX | 24 | 70 | 460土10 | 280 | 725 | 170 | 75 |
| FNB4-24/100-XX | 24 | 100 | 490±10 | 280 | 725 | 170 | 75 |
| FNB4-28/70-XX | 28 | 70 | 500土10 | 320 | 825 | 190 | 85 |
| FNB4-33/70-XX | 33 | 70 | 540±10 | 360 | 925 | 205 | 90 |
| FNB4-35/70-XX | 35 | 70 | 610土10 | 420 | 1050 | 230 | 95 |
| FNB4-35/100-XX | 35 | 100 | 640士10 | 420 | 1050 | 230 | 95 |
| Adding the letters | SB | ST | SC | BB | CT | TT | CC | CE | EE |
| Representing the fitting | Socket clevis -Ball eye | Socket clevis -Tongue | Socket clevis -Clevis | Ball eye -Ball eye | Tongue -Clevis | Tongue -Tongue | clevis -Clevis | clevis -Eye | Eye- Eye |
| Link mark | 16-16 | 16-16N | 16-16N | 16-16 | 16-16N | 16-16N | 16N-16N | 16N-17 | 17-17 |
1.Material:They are made of a fiberglass rod, silicone rubber sheds, and metal fittings.
2.Advantage:These insulators are advantageous because they are lightweight, small in size, unbreakable, resistant to bending, have high tensile strength, and are explosion-proof.
3.Application:They are especially useful in areas with heavy pollution.
