DEHNshield ZP B2 TT 255
Combined arrester for TT and TN-S systems for use in the main power supply system (3+1 circuit) in residential buildings without external lightning protection (also with overhead line feed).
DEHNshield ZP (3rd generation)
Combined arrester type 1 + type 2 + type 3 according to DIN EN 61643-11
Simple, quick and completely tool-free installation thanks to Click + Power connection technology for busbar contact and partly push-in earthing terminal
Powerful and end device-friendly RAC spark gap technology
Perfect solution for the requirements of VDE-AR-N 4100 and 0100-443/534
Space-saving design thanks to narrow width of partly only 38 mm for compact use with feed adapter or integrated circuit breaker
As SG or LSG variant with integrated overcurrent-protected 230 V power supply (L and N) for RfZ and APZ in accordance with VDE-AR-N 4100
Protects the entire electrical system as close as possible to the feed point
Function monitoring of all protection paths and mechanical defect display by green-red marking in the viewing window
Switch-off selective for fuses from 35 A gG up to 25 kAeff short-circuit current
Meets the requirements for lightning current discharge capacity in accordance with DIN0100-534
Technical data:
SPD in accordance with EN 61643-11 / ... IEC 61643-11 Type 1 + Type 2 + Type 3 / Class I + Class II + Class III
Energetically coordinated protective effect to the end device (10 m) Type 1 + Type 2 + Type 3
Nominal voltage AC (UN) 230 / 400 V (50 / 60 Hz)
Highest continuous voltage AC (UC) 255 V (50 / 60 Hz)
Lightning impulse current (10/350 s) [L1+L2+L3+N-PE] (Itotal) 30 kA
Lightning impulse current (10/350 s) [LN] (Iimp) 7.5 kA
Specific energy [LN] (W/R) 14.06 kJ/Ohm
Lightning impulse current (10/350 s) [N-PE] (Iimp) 30 kA
Specific energy [N-PE] (W/R) 225 kJ/Ohm
Nominal discharge current (8/20 s) [LN]/[N-PE] (In ) 20 / 80 kA
Protection level [LN] (UP ) 1.5 kV
Protection level [N-PE] (UP ) 1.5 kV
Open circuit voltage of the hybrid generator (UOC ) 20 kV
Max. mains-side overcurrent protection 160 A gG
TOV voltage [LN] (UT) characteristic 440 V / 120 min. withstand
TOV voltage [N-PE] (UT) characteristic 1200 V / 200 ms withstand
Operating temperature range (TU ) -40 °C ... +80 °C
Function / defect indicator green / red
Number of ports 1
Connection cross-section (PEN, 9) 16-25 mm2 stranded
Installation on 40 mm busbar system
Housing material thermoplastic, color red, UL 94 V-0
Installation location indoors
Protection class IP 30 (with cover)
Approvals VDE
Protection level [L-PE] (UP ) 1.6 kV
| Property | Value |
| Maximum continuous voltage AC: | 255 V |
| Lightning impulse current (10/350 µs): | 30 kA |
| Number of poles: | 4 |
| Nominal voltage AC: | 230 V |
| Signaling on the device: | optical |
| Energetically coordinated protective effect to the end device: | yes |
| Mounting type: | Busbar |
| Protection level N-PE: | 1.5 kV |
| Network type TT: | yes |
| Specific energy (W/R): | 14.06 kJ/Ohm |
| Follow current extinguishing capacity: | 25 kA |
| Max. conductor cross-section rigid (single/multi-wire): | 25 mm² |
| Protection level LN: | 1.5 kV |
| Network type TN-S: | yes |
| Protection class (IP): | IP30 |
