PROTEC BS(R) 50/440

Class I, II Single-pole Surge Protective Device, I = 50kA (10/350), compact design, IEC-61643-1.

Category IEC / EN / VDE: Class I, II / Type 1, 2 / B+C
Location of use: Main distribution boards
Connections: TN-S,TN-C, IT
Protection modes: L/N – PE, L- PEN
Protective element: High Energy MOV
High surge discharge rating: Iimp= 50kA
MOV max withstand capability 1 x 8/20: 150kA

Electrical characteristics:
Max. continuous operating voltage (AC/DC): 440/580V
Nominal discharge current (8/20) In: 25kA
Max. discharge current (8/20) Imax: 100kA
Impulse current (10/350) Iimp: 50kA
Specific energy: 625kJ/Ω
Charge: 25As
Protection level Up: < 1.9kV
Residual voltage at Iimp: < 1.8kV
Follow current If: no
Response time tA: < 25ns
Thermal protection: yes
Back-up fuse (if mains > 500A): 500A gL
Short-circuit withstand current: 25kA/50Hz

Mechanical characteristics:
Terminal screw torque: max. 4.5Nm
Temperature range: - 40 C …. + 80 C
Terminal cross section: 35mm2 (solid) / 25mm2 (stranded)
Mounting EN 60715: 35mm top-hat rail
Degree of protection: IP20
Housing material: thermoplastic; extinguishing degree UL 94 V-0
Dimensions DIN 43880: 4TE
Weight per unit: 458g