What is a Surge Protective Device (SPD)?
A Surge Protective Device (SPD) is an essential electrical component designed to protect electrical equipment from damage caused by sudden voltage spikes, known as surges. These surges can result from
• Materials: Nylon + EPDM rubber
• Waterproof: IP68
• Temperature：-40°～105°,Short-term 120°
• Fire prevention：UL94V-2,Customizable V0
• performance：ROHS20, EU CE, IP68
| Product model | Thread size | Cable range | Thread length | Wrench Size |
| PN. | Metric | φ mm | GL mm | nut/cap mm |
| MG12A-H4-02 | M12×1.5 | 1~2.3 | 8.5 | 18/19 |
| MG16AS-H4-02 | M16×1.5 | 1~2.3 | 10 | 22/19 |
| MG16A-H4-03 | M16×1.5 | 1.5~3 | 15 | 22/22 |
| MG20A-H4-05 | M20×1.5 | 2~4.5 | 15 | 27/27 |
| MG20A-H4-04 | M20×1.5 | 1.5~3.5 | 15 | 27/27 |
| MG20A-H4-03 | M20×1.5 | 1~2.5 | 15 | 27/27 |
| MG20AS-H4-04 | M20×1.5 | 2~4 | 10 | 27/24 |
| MG22A-H4-05 | M22×1.5 | 2~4.5 | 10 | 29/27 |
| MG25A-H4-09 | M25×1.5 | 6~9 | 15 | 33/33 |
| MG25A-H4-08 | M25×1.5 | 5~8 | 15 | 33/33 |
| MG25A-H4-07 | M25×1.5 | 4~7 | 15 | 33/33 |
| MG25A-H4-06 | M25×1.5 | 3~6 | 15 | 33/33 |
| MG25A-H4-05 | M25×1.5 | 2~5 | 15 | 33/33 |
| MG32A-H4-09 | M32×1.5 | 6~9 | 15 | 41/41 |
| MG32A-H4-07 | M32×1.5 | 4~7 | 15 | 41/41 |
| MG40A-H4-12 | M40×1.5 | 9~12 | 20 | 50/50 |
| PG7A-H4-02 | PG7 | 1~2.3 | 8.5 | 17/19 |
| PG9A-H4-02 | PG9 | 1~2.3 | 8.5 | 22/19 |
| PG11A-H4-03 | PG11 | 1.5~3 | 10 | 22/22 |
| PG13.5A-H4-04 | PG13.5 | 2~4 | 10 | 27/24 |
| PG16A-H4-05 | PG16 | 2~4.5 | 11 | 30/27 |
| PG16A-H4-04 | PG16 | 1.5~3.5 | 11 | 30/27 |
| PG16A-H4-03 | PG16 | 1~2.5 | 11 | 30/27 |
| PG21A-H4-09 | PG21 | 6~9 | 12 | 36/33 |
| PG21A-H4-08 | PG21 | 5~8 | 12 | 36/33 |
| PG21A-H4-07 | PG21 | 4~7 | 12 | 36/33 |
| PG21A-H4-06 | PG21 | 3~6 | 12 | 36/33 |
| PG21A-H4-05 | PG21 | 2~5 | 12 | 36/33 |
| PG29A-H4-09 | PG29 | 6~9 | 12 | 46/41 |
| PG29A-H4-07 | PG29 | 4~7 | 2 | 46/41 |
| PG36A-H4-12 | PG36 | 9~12 | 15 | 57/50 |
| G1/4A-H4-02 | G1/4 | 1~2.3 | 8.5 | 19/19 |
| G3/8A-H4-03 | G38 | 1.5~3 | 15 | 22/22 |
| G1/2A-H4-04 | G1/2 | 2~4 | 10 | 27/24 |
| G1/2AL-H4-05 | G1/2 | 2~4.5 | 15 | 30/27 |
| G1/2AL-H4-04 | G1/2 | 1.5~3.5 | 15 | 30/27 |
| G1/2A-H4-03 | G1/2 | 1~2.5 | 15 | 30/27 |
| G3/4A-H4-09 | G3/4 | 6~9 | 15 | 33/33 |
| G3/4A-H4-08 | G3/4 | 5~8 | 15 | 33/33 |
| G3/4A-H4-07 | G3/4 | 4~7 | 15 | 33/33 |
| G3/4A-H4-06 | G3/4 | 3~6 | 15 | 33/33 |
| G3/4A-H4-05 | G3/4 | 9~5 | 15 | 33/33 |
| G1-1/4A-H4-12 | G1-1/4 | 9~12 | 16 | 51/50 |
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