LT-20, Uc275V, Uc320V, Uc385v,Uc440V. In 10kA, Imax 20kA
It is mainly used to provide T2 protection for various electronic and electrical equipment in buildings vulnerable to lightning overvoltage.Mainly used as primary protection equipment in the main distribution system.
Characteristic
Location of Use:Distribution cabinet,JP cabinet etc.
Network Systems:TN-S,TN-C,TT
Mode of Protection:L-PE,N-PE,L-PEN,L-N
Protective Elements:High Energy MOV
Chinese Standard:GB/T18802.11-2020
IEC standard:IEC 61643-11:2011
European standard:EN 61643-11:2012
Certificates:TUV,CE,CQC
Technical Data
| Model number | LT-20 | LT-40 | |
| Max Continuous Operating Voltage | Uc(V~) | 275/320/385/440 | 275/320/385/440 |
| Nominal discharge current | In(kA) | 10 | 20 |
| Maximum discharge current | lmax(kA) | 20 | 40 |
| Protection level | Up(kv) | <1.3/1.4/1.6/1.8 | <1.4/1.5/1.8/2.2 |
| Response time | (ns) | <25 | <25 |
| General parameter | |||
| Access wire area | (mm²) | ≥10 | ≥10 |
| Access ground cross-sectional area | (mm²) | ≥16 | ≥16 |
| SPD special disconnector | Recommend | LT-SSD40 | LT-SSD40 |
| Working environment | -40~+70°C,relative humidity<95%(below 25℃) | ||
| Remote communication connection | 1411:NO,1112:NC | ||
| Associated disconnectors | |
| Thermal | disconnector internal |
Mechnical characteristics
| Connection By screw terminals | 6-25 mm² |
| Terminal Screw Torque | 2.5 Nm |
| Recommended Cable cross Section | ≥16mm² |
| Insert wire length | 15mm |
| Mounting DIN rail | 35mm(EN60715) |
| Degree of Protection | IP20 |
| Housing | PBT/PA |
| Flame retardant grade | UL94 V0 |
| Operating temperature | -40℃~+70℃ |
| Operating relative humidity | 5%-95% |
| Working atmospheric pressure | 70kPa～106kPa |
Size
| Poles | 1P | 1+NPE | 2P | 3P | 4P | 3+NPE |
| Size (mm) | 18×90(83)×67 | 36×90(83)×67 | 36×90(83)×67 | 54×90(83)×67 | 72×90(83)×67 | 72×90(83)×67 |
| Packing | Inner box | |||||
| Delivery packaging | Carton or Pallet | |||||
Dimensional drawing
