Surge protective devices of the RSP-E12.5-31 series
Surge protective devices of the RSP-E12.5-31 series
AC surge protective device, rated voltage 230 V AC. Plug-in design, Class I+II (T1+T2), number of poles: 4.
Technical info
For L–N: impulse current (Iimp) 12.5 kA (10/350 µs), maximum discharge current (Imax) 80 kA (8/20 µs), nominal discharge current 25 kA.
For N–PE: impulse current (Iimp) 50 kA (10/350 µs), maximum discharge current (Imax) 100 kA (8/20 µs), nominal discharge current 50 kA.
For single-phase network 1+1, (U_c) 275 V AC.
Protection: MOV varistor for L–N, GDT for N–PE.
The device is equipped with a potential-free contact for remote fault indication.
Width: 72 mm.
• Class I+II / Type 1+2 surge protective device in accordance with IEC/EN 61643-11.
• Four-pole SPD (3+1 circuit) for use in three-phase systems.
• Plug-in module (18 mm) allowing easy replacement without dismantling the entire device.
• Unique thermal disconnector design ensures fast thermal response and safe disconnection.
• Lightning impulse current up to 12.5 kA (10/350 µs) for L–N, 50 kA (10/350 µs) for N–PE.
• Surge current up to 80 kA (8/20 µs) for L–N, 100 kA (8/20 µs) for N–PE.
• Protection against low voltage conditions.
• High rated short-circuit current up to 50 kA rms, suitable for use in most AC power supply systems.
• Fault indication due to degradation and optional remote signaling contact.
• Wide operating temperature range: −40°C to +85°C.
• Mounting on 35 mm DIN rail.
Electrical parameters
| Maximum continuous operating voltage Uc |
L-N / N-PE 275 V AC/ 255 V AC |
| Nominal discharge current (8/20 μs) In |
L-N / N-PE 25 kA/ 50 kA |
| Maximum discharge current (8/20 μs) Imax |
L-N / N-PE 80 kA/ 100 kA |
| Protection level Up |
L-N / N-PE 1,2 kV/ 1,5 kV |
| Response time |
L-N / N-PE ≤ 25 ns / ≤100 ns |
| Back-up protection |
≤250 A gL/gG |