Compact 3-phase+N Type 2 surge protector - 120 V - Pluggable
DS440S-320/G
DS440S-320/G
Part Number: 311932
  • Compact 3-Phase Type 2 surge protector
  • In : 20 kA
  • Imax : 40 kA
  • Common/Differential mode
  • Pluggable module
  • Remode Signaling contact
  • EN 61643-11, IEC 61643-11, UL1449 ed.4 compliance

The DS440 Type 2 surge protectors are compact devices designed to protect 3-phase+N networks at the main switchboard. They provide a common or common/differential mode protection. This SPD is based on high energy varistor equipped with thermal disconnectors and failure indicator to comply with standards. The DS440 is DIN rail compatible and is built with a plug-in module and fixed base, which allows an easy and fast maintenance.


SPD type 2
Network 230/400 V 3-phase
AC system TT-TN
Nominal line voltage Un 230 Vac
Max. AC operating voltage L-N Uc 320 Vac
Temporary Over Voltage (TOV) Charasteristics - 5 sec. UT 335 Vac withstand
Temporary Over Voltage (TOV) Charasteristics - 120 mn UT 440 Vac disconnection
Temporary Over Voltage N/PE (TOV HT) UT 1200 V/300A/200 ms withstand
Residual Current Ipe None
Operating current Ic 0.5 mA
Follow current If None
Nominal discharge current In 20 kA
Max. discharge current Imax 40 kA
Connection mode(s) L/N and N/PE
Protection mode(s) Common/Differential mode
Residuel voltage at 5 kA Up-5kA 1.5/1 kV
Protection level CM/DM Up mc/md 1.5/1.5 kV
Admissible short-circuit current Isccr 10 000 A
Technology MOV
SPD configuration 3-phase+Neutral
Connection to Network by screw terminals: 1.5-10mm² (L/N) or 2.5-25mm² (PE)
Format Plug-in modular box
Mounting Symmetrical rail 35 mm (DIN 60715)
Housing material Thermoplastic UL94-V0
Operating temperature Tu -40/+85°C
Protection rating IP20
Failsafe mode Disconnection
Disconnection indicator 3 mechanical indicators
Spare module(s) DSM440-320/G and DSM440-320/GPE
Remote signaling of disconnection Output on changeover contact
Dimensions See diagram
Standards compliance IEC 61643-11 / EN 61643-11 / UL1449 4ed.
Certification EAC
Thermal disconnector Internal
Installation ground fault breaker Type 'S' or delayed
Fuses 50 A mini. - 125 A max. - Fuses Type gG