Easy to install——35mm DIN rail installation design.
Easy to judge the condition of the equipment——Visual Indicator Window.
Easy to replace——Pluggable module.
Equipped with monitoring and feedback functions——Optional with remote signaling.
Item No.: LYB-12.5/275 3(S)+1
LY1-B25/3(S)+1 MONOBLOCK MULTI-POLE SPD
Description：
Class 1·Class II·Type 1·Type 2
Location of Use: Main Distribution Boards
Network Systems:TT, TN-S
Mode of Protection: L-N/ L’-N,N-PE
Surge Ratings: limp = 25 kA/ 100 kA(10/350 μs)
In = 25 kA/ 100 kA(8/20 μs)
IEC/EN Category: Class 1+11 / Type 1+2
Protective Elements: High Energy MOV and GDT
Housing: Monoblock Design
Compliance:IEC 61643-11:2011
EN 61643-11:2012
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| ■ Technical Data | ||||||
| IEC Electrical | 150 | 275 | 320 | 385 | ||
| Nominal AC Voltage (50/60Hz) | Uo/ Un | 120 V | 230 V | 230 V | 230 V | |
| Maximum Continuous Operating Voltage (AC) | (L-N) | Uc | 150 V | 275 V | 320 V | 380V |
| (N-PE) | Uc | 255 V | 255 V | 255 V | 255 V | |
| Nominal Discharge Current (8/20 μs) | (L-N) / (N-PE) | In | 25 kA /100 kA | |||
| Maximum Discharge Current (8/20 μs) | (L-N) / (N-PE) | Imax | 100 kA | |||
| Impulse Discharge Current (10/350 μs) | (L-N) / (N-PE) | Iimp | 25 kA / 100 kA | |||
| Total Discharge Current (10/350 μs) | Itotal | 100 kA | ||||
| Specific Energy | (L-N) / (N-PE) | W/R | 156 kJ / Ω / 2.5 M kJ / Ω | |||
| Charge | (L-N) / (N-PE) | Q | 12.5 As / 50 As | |||
| Voltage Protection Level | (L-N) / (N-PE) | Up | 1 kV / 1.5 kV | 1.5 kV / 1.5 kV | 1.6 kV / 1.5 kV | 1.8 kV / 1.5 kV |
| (N-PE) | Ifi | 100 ARMS | ||||
| Response Time | (L-N) / (N-PE) | tA | < 25 ns / < 100 ns | |||
| Back-Up Fuse (max) | 315 A gL / gG | |||||
| Short-Circuit Current Rating (AC) | (L-N) | ISCCR | 50 kA | |||
| TOV Withstand 5s | (L-N) | UT | 180 V | 335 V | 335 V | 335 V |
| TOV 120min | (L-N) | UT | 230 V | 440 V | 440 V | 440 V |
| TOV Withstand 200ms | (N-PE) | UT | 1200 V | |||
| Number of Ports | 1 | |||||
| Mechanical & Environmental | ||||||
| Operating Temperature Range | Ta | -40ºF to +158ºF [-40ºC to +70ºC] | ||||
| Permissible Operating Humidity | RH | 5%…95% | ||||
| Atmospheric pressure and altitude | 80k Pa … 106k Pa / -500 m…… 2000 m | |||||
| Terminal Screw Torque | Mmax | 39.9 Ibf·in[4.5 Nm] | ||||
| Conductor Cross Section (max) | 2 AWG (Solid, Stranded) / 4 AWG (Flexible) 35 mm² (Solid, Stranded) / 25 mm²(Flexible) |
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| Mounting | 35 mm DIN Rail | |||||
| Degree of Protection | IP 20 (built-in) | |||||
| Housing Material | Thermoplastic: Extinguishing Degree UL 94 V-0 | |||||
| Thermal Protection | Yes | |||||
| Operating State / Fault Indication | Green ok / Red defect | |||||
| Remote Contacts (RC) RC Switching Capacity RC Conductor Cross Section (max) |
Optional AC: 250V / 0.5 A; DC: 250V / 0.1 A;125V / 0.2 A;75V / 0.5 A 16 AWG (Solid) / 1.5 mm²(Solid) |
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