TNR-RS lightning surge protecto
TNR-RS type signal surge protector is mainly applied to all kinds of communication between RS232 and RS485 transmission protocol or computer network equipment, such as DB9 serial port, etc., it can effectively protect the damage caused by lightning or overvoltage generated by the system.
Installation and maintenance
1. this product is connected to the input terminal of the protected equipment.
2. from the terminal to the grounding end grounding, to ensure good grounding, grounding wire distance grounding bus should not be too long, kept within 0.5 meters.
3. if the thunderstorm day after, the signal can not be transmitted normally, after pulling down this product, re connected after the normal transmission of the signal, indicating that the product has been damaged.
Technical parameter
| Model | TNR-RS232/9 | TNR-RS232/25 | TNR-RS485/4 |
| Number of protective needles | 9 | 25 | 4 |
| Shape size（mm） | 25×35×29 | 77×55×29 | 75×36×25 |
| Protective foot | All pins | 2,3,4,5,6,8,20,22 | 1,2,3,4 |
| Rated working voltage Un(V-) | 15 | 12 | |
| Maximum continuous operating voltage Uc(V-) | 25 | 15 | |
| Nominal discharge current In（KA） | 0.2 | 5 | |
| Transmission frequency MHz | 2 | 10 | |
| Insertion loss dB | ＜0.5 | ＜0.5 | |
| Protection mode | Line – line line-land | Line – line line-land | |
Product connection
