The NDU2 series surge protective devices come in 1P, 2P/4P, and 4P configurations. They are red and certified with CE/ISO9001. Key specs include Uc values of 500V (1P), DC12V/275Vac (2P/4P), and 275Vac (4P), Up values ≤1.5kV to ≤2.2kV, In ratings of 10kA to 40kA, and Imax values of 20kA to 80kA. Compliant with GB18802/IEC61643-11 standards.
| Model Number | NDU2-10 | NDU2-20 | NDU2-60 |
| Product name | Surge Protective Device | Surge Protective Device | Surge Protective Device |
| Color | Red | Red | Red |
| Poles | 1P | 2P,4P | 4P |
| Certificate | CE/ISO9001 | CE/ISO9001 | CE/ISO9001 |
| Tesl Standard | GB18802,IEC61643-11 | GB18802,IEC61643-11 | GB18802,IEC61643-11 |
| Uc | 500V | DC12V/275Vac | 275Vac |
| Up | ≤1.5KV | ≤1.5KV/≤2.2KV | ≤2.2KV |
| In | 10KA | 10KA/40KA | 40KA |
| Imax | 20KA | 20KA/80KA | 80KA |