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Type 1+2+3 AC surge protector - Single phase

DS252VG-120
Part Number 3950
DS252VG-120
  • Type 1+2+3 unipolar surge protector
  • 25 kA on 10/350µs impulse
  • Low voltage Up
  • Internal disconnection, status indicator and remote signaling
  • Optimized to TOV
  • IEC 61643-11 and UL1449 ed.5 compliance
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The products of the range DS250VG is an extreme duty Type 1+2+3 AC surge protector device designed to protect at the entrance of the electrical installation. This SPD is particularly useful in a high lightning density area where the risk of heavy surge current or even direct strike is high (eg: buildings equipped with lightning rods). The `Spark gap + Varistor` technology allows a very low level of protection and an absence of following current. The DS250VG 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
1+2+3
Network
 120 V single-phase
AC system
 TN
Nominal line voltage
 Un 120 Vac
Max. AC operating voltage
Uc 150 Vac
Max. load current
if series connection
 IL 100 A
Temporary Over Voltage (TOV) Characteristics - 5 sec.
Without disconnection
 UT 180 Vac withstand
Temporary Over Voltage (TOV) Characteristics - 120 mn
Without disconnection or with safety disconnection
 UT 230 Vac withstand
Residual Current
Leakage current to Ground
 Ipe None
Follow current
If None
Nominal discharge current
15 x 8/20 µs impulses
 In 30 kA
Max. discharge current
max. withstand @ 8/20 µs by pole
 Imax 70 kA
Impulse current by pole
max. withstand 10/350µs by pole
 Iimp 25 kA
Total lightning current
max. total withstand @ 10/350µs
 Itotal 50 kA
Withstand on Combination waveform IEC 61643-11
Class III test: 1.2/50µs - 8/20µs
 Uoc 20 kV
Withstand on overvoltages IEEE C62.41.1
 20 kV
Specific energy by pole
max. withstand 10/350 µs
 W/R 156 kJ/ohm
Connection mode(s)
 L/PE and N/PE
Protection mode(s)
 Common mode/Differential mode
Residual voltage
@ In (8/20 µs)
 Up-in 0.7 kV
Protection level N/PE
@ In (8/20µs)
 Up N/PE 1 kV
Protection level L/PE
@ In (8/20µs)
 Up L/PE 1 kV
Admissible short-circuit current
 Isccr 50 000 A
Technology
 VG Technology (MOV+GSG)
SPD configuration
 Single 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
 1 mechanical indicator by pole
Remote signaling of disconnection
 Output on changeover contact
Dimensions
 See diagram
Standards compliance
 IEC 61643-11 / EN 61643-11 / UL1449 ed.5
Certification
 UL Recognized
Thermal disconnector
 Internal
Installation ground fault breaker
 Type 'S' or delayed
Back-up protection device
Fuse assembly: SFD1-25-20S / or Fuses Type gG 315 A