1.Standards:IEC61643-1 and GB/T18802.1
2.High lightning flow and discharge capacity,a single module impact current up to 25KA(s)
3.Be widely used in the first stage of lightning protection of the equipment system in high lightning risk areas
4.With internal wiring, the overall structure is compact, convenient installation wiring
5.High-speed response, fast action time
6.Working status is obvious, green(normal), red(Fault)
| RDU5 | A | 15 | 2P | UC420 |
| Code | Protection grade | Max. discharge current | Poles | Maximum sustainable operating voltage |
| Surge Protection Device | A: Grade Ⅰ B: Grade Ⅱ |
A:15、25、50 B:10、20、40、60、80、100 |
1P 2P 3P 4P |
UC420 |
| T1 Grade Testing | |||||
| Model No. and specification |
Maximum continuous operating voltage UC |
Lightning impulse current limp(10/350μs) |
Protection level up(kV) | Responding time ns |
Working environment temperature ℃ |
| RDU5-A15 | 420V | 15 | 2.0 | ≤100 | -40℃~+85℃ |
| RDU5-A25 | 25 | 2.5 | |||
| RDU5-A50 | 50 | 2.5 | |||
| T2 Grade Testing | |||||||
| Model No. and specification |
Rated working voltage |
Maximum continuous operating voltage UC |
Protection level up(kV) |
Max.discharge current Imax(kV) |
nominal current In(KA) |
Responding time ns |
Working environment temperature ℃ |
| RDU5-B10 | 220V-380V | 420V | 1.2 | 10 | 5 | ≤25 | -40℃~+85℃ |
| RDU5-B20 | 1.5 | 20 | 10 | ||||
| RDU5-B40 | 1.8 | 40 | 20 | ||||
| RDU5-B60 | 2.2 | 60 | 30 | ||||
| RDU5-B80 | 2.4 | 80 | 40 | ||||
| RDU5-B100 | 2.5 | 100 | 60 | ||||
Note: The RDU5-B100 surge protector is of CITEL structure, and the rest of the RDU5-8 series surge protectors are OBO structure products.
Grade Ⅰ protection
Grade Ⅱ protection
| Technical Parameters | Specificatiom | |||||
| Protection level | A: Primary protection | B: Secondary protection | ||||
| Rated current In (A) | 15、25、50 | 10、20、40、60、80、100 | ||||
| function | Lightning overvoltage protection, surge overvoltage protection | |||||
| Number of poles | 1P、2P、3P、3P+N、4P | |||||
| Rated frequency (Hz) | 50 | |||||
| Maximum continuous working voltage Ui (v) | 420 | |||||
| Maximum amplification current Imax (us) | 8/20 | |||||
| Lightning impulse current Limp (u s) | 10/350 | |||||
| Short circuit withstand I (kA) | 25 | |||||
| Response time (ns) | ≤100 | ≤25 | ||||
| Protection level up (Kv) | 2.0、2.5、2.5 | 1.2、1.5、1.8、2.2、2.4、2.5 | ||||
| Protection level | IP20 | |||||
| Reference Setting Temperature (℃) | 30℃ | |||||
| class of pollution | 2 | |||||
| Wiring capacity (mm2) | 1-35 | |||||
| Operating ambient temperature (℃) | -35-70 | |||||
| Altitude (m) | ≤2000 | |||||
| Relative air temperature | When the relative air temperature is+20 ℃, it does not exceed 95% When the relative air temperature is+40 ℃, it shall not exceed 50%; |
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| Installation Category | Level II and III | |||||
| Installation method | TH35-7.5 installation rail | |||||
| Incoming method | Upper incoming line | |||||
| Model No. | Maximum continuous operating voltage UC |
Lightning impulse current limp(10/350μs) | Protection level Up （KV） |
Response time (ns) | Operating ambient temperature ℃ | |
| RDU5-A15 | 420V | 15 | 2 | ≤100 | -40°C+85°C | |
| RDU5-A25 | 25 | 2.5 | ||||
| RDU5-A50 | 50 | 2.5 | ||||
Outline and Installation Dimension
Figure 1 Primary protection
Figure 2 Secondary protection
