FIR 50/385 (4+0)

///FIR 50/385 (4+0)
FIR 50/385 (4+0)2018-10-28T17:17:40+08:00

Project Description

FIR 50/385 (4+0)

• Modular design
• Designed for main distribution boards
• MOV or GDT protection elements made in Europe

Electrical data
Category IEC / EN / VDEClass 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)
Nominal discharge current (8/20) In25 kA per pole
Max. discharge current (8/20) Imax60 kA per pole
Impulse current (10/350) Iimp12.5 kA per pole
Specific energy W/R39 kJ/Q
Charge Q6.25 As
Voltage protection level Up (L-N)< 1.7 kV
Voltage protection level Up (N-PE)
Residual voltage Ures @ Iimp< 1.4  kV
Residual voltage Ures @ 5kA(8/20)< 1.3 kV
Follow current IfiNO
Response time tA< 25 ns
Thermal protectionYES
Back-up fuse (if mains > 250 A)160 Agl
Short-circuit withstand ISCCR25 kA/50 Hz
General Data
Operating temperature-40 ~ 80℃
Terminal screw torquemax. 3.0 Nm
Terminal cross section35 mm2 (solid) / 25 mm2 (stranded)
Mounting35 mm DIN rail, EN 60715
Protection degreeIP20
Housing materialThermoplastic; inflammability class UL 94 V-0
Indication of disconnector operationred flag
Remote contacts (RC)YES
Remote contact ratingsAC: 250 V/0.5 A, 125 V/3 A
Remote terminal cross sectionmax. 1.5 mm2
Remote terminal torque0.25 Nm
StandardIEC/EN 61643-11
Network systemsTN-S
Protection modeL/N-PE