K plug-in surge arresterDetailed product description：

The K-type plug-in surge arrester is designed as a module, easy to install, and easy to operate for live maintenance
Built in overcurrent and overheat, temperature controlled circuit breaker technology
High quality zinc oxide varistors with independent intellectual property rights
Low leakage current, fast response time, and low residual voltage
Can be equipped with remote signaling interface and sound and light alarm, enabling remote monitoring
Alarm indication: green (normal), red (fault)

Technical parameters of K-type plug-in surge arrester:

model

TNR-D5

TNR-D10

TNR-C15

TNR-C20

TNR-B25

TNR-B30

Rated working voltage Un (V~)

two hundred and twenty

220/380

220/380

220/380

220/380

220/380

Continuous operating voltage Uc (V~)

two hundred and seventy-five

three hundred and twenty

three hundred and twenty

three hundred and eighty-five

275/320

385/420

275/320

385/420

three hundred and eighty-five

four hundred and twenty

three hundred and eighty-five

four hundred and twenty

Protection level Up (kV~)

≤0.7

≤1.0

≤0.9

≤1.2/1.4

≤1.0/1.4

≤1.5/1.6

≤1.2/1.6

≤1.7/1.8

≤1.8

≤1.9

≤1.9

≤2.0

Nominal discharge current (8/20 μ S) In (kA)

five

ten

fifteen

twenty

twenty-five

thirty

Maximum current capacity Imax (8/20 μ S) In (kA)

ten

twenty

thirty

forty

fifty

sixty

Response time t (nS)

＜25

working environment

-40 ~ +85

relative humidity

≤95%(25℃)

Connecting wire cross-sectional area (mm2)

≥10

≥16

≥16

≥16

≥25

≥25

Grounding wire cross-sectional area (mm2)

≥16

≥25

≥25

≥25

≥25

≥25

Alarm line cross-sectional area (mm2)

≥ 1.0

Product wiring:
This product can be used for single and three-phase surge protection under different power supply systems through different combinations, especially for the 3+1 protection (three-phase+N-PE) commonly used in TT systems in small and medium-sized cities in China.

External dimensions, installation track dimensions:
The lightning arrester is installed using 35mm track profiles, and the external dimensions are shown in the figure

Application:
This product can be used for protection levels B, C, and D, and is suitable for lightning protection zones LPZ1-LPZ2 and LPZ3. TNR-D5 and TNR-D10 have a protection level of D, meeting the end protection requirements for electrical equipment. TNR-C15 and TNR-C20 have a protection level of C and are commonly used for lightning surge protection in building power supply systems, floor or indoor distribution boxes, and low-voltage switchgear cabinets. TNR-B25 and TNR-B30 have a protection level of B and are generally installed in the low-voltage main switchgear of building incoming lines.