Type 1+2 AC surge protector single-phase
Part Number: 3962
  • Type 1 + 2 unipolar surge protector
  • Iimp total: 50 kA (10/350µs импульс)
  • Imax : 140 kA (8/20µs импульс)
  • Внутренний размыкатель сети, индикатор состояния
  • Дистанционная сигнализация
  • Соответствуют IEC 61643-11, EN 61643-11 и UL1449 ed.3
Installation Sheet

The DS250E is an extreme duty Type 1+2 designed to protect the entrance of the electrical installation. The DS250E is a one-pole SPD and can be used in common mode or common and differential mode.

DS250E AC surge protectors are designed to be connected in multi-pole configuration to protect single-phase, 3-phase and 3-phase+neutral AC networks.

This SPD is DIN rail compatible,

SPD type
following IEC test
230 V single-phase
AC system
Nominal line voltage
230 Vac
Max. AC operating voltage L-N
330 Vac
Max. load current
100 A
Temporary Over Voltage (TOV) Charasteristics - 5 sec.
without disconnection
335 Vac withstand
Temporary Over Voltage (TOV) Charasteristics - 120 mn
without disconnection or with safety disconnection
440 Vac disconnection
Residual Current
Leakage current to Ground
< 4 mA
Operating current
Continious current at Uc
2 mA
Follow current
Nominal discharge current
15 x 8/20 µs impulses
70 kA
Max. discharge current
max. withstand @ 8/20 µs by pole
140 kA
Impulse current by pole
max. withstand 10/350µs by pole
25 kA
Total lightning current
max. total withstand @ 10/350µs
50 kA
Admissible short-circuit current
50000 A
Connection mode(s)
L/PE and N/PE
Protection mode(s)
Common mode
Protection level L/PE
@ In (8/20µs)
2.5 kV
Specific energy by pole
max. withstand 10/350 µs
156 kJ/ohm
Technology MOV
SPD configuration Single phase
Connection to Network By screw terminals : 6-35 mm² / by bus
1-pole modular box assembled
Symmetrical rail 35 mm (EN60715)
Housing material Thermoplastic UL94-V0
Operating temperature -40/+85°C
Protection rating IP20
Failsafe behavior Disconnection
Disconnection indicator 3 mechanical indicators by pole
Remote signaling of disconnection
Output on changeover contact
See diagram
Standards compliance
IEC 61643-11 / EN 61643-11 / UL1449 4ed.
Thermal disconnector Internal
Installation ground fault breaker Type 'S' or delayed
Fuses type gG - 315 A