Project Description
FIR 50/385 (3+1)
• Modular design• Designed for main distribution boards
• MOV or GDT protection elements made in Europe
| Electrical data | |
|---|---|
| Category IEC / EN / VDE | Class I, II / Type 1, 2 / B, C |
| Max. continuous operating voltage (AC/DC) Uc (L-N) | 385/500 V |
| Max. continuous operating voltage (AC/DC) Uc (N-PE) | 255 V |
| Nominal discharge current (8/20) In | 25 kA/30 kA |
| Max. discharge current (8/20) Imax | 60 kA/50 kA |
| Impulse current (10/350) Iimp | 12.5 kA/50 kA |
| Specific energy W/R | 39 kJ/Q / 2.5 MJ/Q |
| Charge Q | 6.25 As/50 As |
| Voltage protection level Up (L-N) | < 1.7 kV |
| Voltage protection level Up (N-PE) | < 1.7 kV |
| Residual voltage Ures @ Iimp | < 1.4 kV |
| Residual voltage Ures @ 5kA（8/20） | < 1.3 kV |
| Follow current Ifi | 100 ARMS |
| Response time tA | < 25 ns/100 ns |
| Thermal protection | YES |
| Back-up fuse (if mains > 250 A) | 160 Agl |
| Short-circuit withstand ISCCR | 25 kA/50 Hz |
| General Data | |
| Operating temperature | -40 ~ 80℃ |
| Terminal screw torque | max. 3.0 Nm |
| Terminal cross section | 35 mm2 (solid) / 25 mm2 (stranded) |
| Mounting | 35 mm DIN rail, EN 60715 |
| Protection degree | IP20 |
| Housing material | Thermoplastic; inflammability class UL 94 V-0 |
| Indication of disconnector operation | red flag |
| Remote contacts (RC) | YES |
| Remote contact ratings | AC: 250 V/0.5 A, 125 V/3 A |
| Remote terminal cross section | max. 1.5 mm2 |
| Remote terminal torque | 0.25 Nm |
| Standard | IEC/EN 61643-11 |
| Network systems | TT, TN-S |
| Protection mode | L-N, N-PE |
| Product manual - Surge Protection Devices (Chinese) | Version 1.0 | 4 MB |