Type 1+2 AC surge protector 3-phase

DS253E-300
Part Number 3350
DS253E-300
  • Type 1 + 2 unipolar surge protector
  • Iimp total: 75 kA on 10/350µs impulse
  • Imax : 140 kA on 8/20µs impulse
  • Internal disconnections, status indicators
  • Remote signaling
  • IEC 61643-11, EN 61643-11 and UL1449 ed.5 compliance
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The DS250E is an extreme duty Type 1+2 designed to protect the entrance of the electrical installation. They are used to protect biphase, 3-phase or 3-phase + neutral networks in common mode or in common and differential mode. The 'Multi-Varistor' technology used allows the best possible behavior for the LV network (no follow-on current). The DS250E is mounted on a DIN Rail and has a double connection for the active conductor, which allows an optimized connection to the network.
SPD type
IEC

1+2
Network

230/400 V 3-phase
AC system

TNC
Nominal line voltage
 Un

230/400 Vac
Max. AC operating voltage
Uc

330 Vac
Max. load current
if series connection
 IL

100 A
Temporary Over Voltage (TOV) Characteristics - 5 sec.
Without disconnection
 UT

335 Vac withstand
Temporary Over Voltage (TOV) Characteristics - 120 mn
Without disconnection or with safety disconnection
 UT

440 Vac disconnection
Residual Current
Leakage current to Ground
 Ipe

< 3 mA
Follow current
If

None
Nominal discharge current
15 x 8/20 µs impulses
 In

70 kA
Max. discharge current
max. withstand @ 8/20 µs by pole
 Imax

140 kA
Impulse current by pole
max. withstand 10/350µs by pole
 Iimp

25 kA
Total lightning current
max. total withstand @ 10/350µs
 Itotal

75 kA
Specific energy by pole
max. withstand 10/350 µs
 W/R

156 kJ/ohm
Connection mode(s)

L/PE
Protection mode(s)

Common mode
Protection level L/PE
@ In (8/20µs)
 Up L/PE

2.5 kV
Admissible short-circuit current
 Isccr

50 000 A
Technology

MOV
SPD configuration

3-phase
Connection to Network

By screw terminals: 6-35mm² / by bus
Format

1-pole modular box assembled
Mounting

Symmetrical rail 35 mm (EN 60715)
Housing material

Thermoplastic UL94 V-0
Operating temperature
 Tu

-40/+85°C
Protection rating

IP20
Failsafe mode

Disconnection from AC network
Disconnection indicator

3 mechanical indicators by pole
Remote signaling of disconnection

Output on changeover contact
Dimensions

See diagram
Weight

0.9 kg
Standards compliance

IEC 61643-11 / EN 61643-11 / UL1449 ed.5
Certification
Thermal disconnector

Internal
Installation ground fault breaker

Type 'S' or delayed
Back-up protection device

Fuse assembly: SFD1-25-30S / or Fuses Type gG 315 A