TNR-B Surge Protective Device
TNR-B series of surge protectors are suitable for AC 47-63Hz TT, TN, IT and other power supply systems, and are widely used for all kinds of power supply two level (B) over voltage protection. The low voltage main distribution cabinet is usually installed in the building into the distribution cabinet.
Technical parameter
| Model | TNR-B10 | TNR-B80 | TNR-B60 | TNR-B40 | TNR-30 | TNR-B25 |
| Maximum sustained operating voltage Uc（V~） | 385/440 | 385/440 | 385/440 | 385/440 | 385/440 | 385/440 |
| Nominal discharge current ln(ka) | 100 | 80 | 60 | 40 | 30 | 25 |
| Maximum discharge current limp(ka) | 160 | 120 | 100 | 80 | 60 | 50 |
| Protection level Up(kv) | ＜2.5/30 | ＜2.5-3.0 | ＜2.5-3.0 | ＜2.5-3.0 | ＜2.2-2.5 | ＜2.2/2.5 |
| response time t(ns) | ＜25 | ＜25 | ＜25 | ＜25 | ＜25 | ＜25 |
| Intercepting area of access wire（mm²） | ≥16 | ≥16 | ≥10 | ≥10 | ≥10 | ≥10 |
| Intercepting area of grounding wire（mm²） | ≥25 | ≥25 | ≥16 | ≥16 | ≥16 | ≥16 |
| Front-end recommended series fuse | 250 | 200 | 160 | 125 | 100 | 100 |
| work environment（℃） | -40~+70 | |||||
| Relative humidity | ≤95%（25℃） | |||||
Installation matters
The TNR-B series protectors are installed at the front end of the protected equipment in parallel. The wires must be similar to the power lines. The total length should be controlled within 0.5 meters, and the wires should be short and straight. The front end of the protector should be connected in series with a corresponding air switch or fuse. The power supply must be disconnected when installing.
Fault diagnosis of protector:
First, the fast indicator window is green (normal), when the module becomes red after deterioration, it must be replaced in time.
Two, the base has a remote alarm connection, for one often open a often closed dry contact, failure when the state flipped.
Characteristics of Kevin connection
The Kevin connection is a common wiring method for the surge protector in the installation and use. This connection mode can effectively reduce the residual voltage value of the protected device’s lightning overvoltage, and match it with the voltage protection level Up of the protector, so as to achieve the best protection effect
Product shape size
Product wiring diagram
