Type 2 AC surge protector - 3-phase+N
DACF25S-31-150
DACF25S-31-150
Part Number: 821410144
  • Type 2 AC Multipolar surge protector
  • In : 15 kA
  • Imax total : 50 kA
  • Internal Fuse
  • Pluggable module for each phase
  • Remote signaling
  • NF EN 61643-11, CEI 61643-11 compliance
  • UL1449 ed.20
Installation Sheet

Type 2 DACF25 SPDs are used mainly for primary surge protection of single and 3-phase AC networks at the main switchboard. In addition to their thermal disconnector, the range is equipped with a internal fuse against short-circuit currents, which avoidsthe use of a external fuse or circuit-breaker as requested by standard. The operation of one of the both disconnectors will activate the indicator and the remote signalling (option). This compact solution simplifies the implementation and minimum space. The DACF25 surge protectors are designed to be used in a multipolar configuration to protect single-phase, 3-phase.


SPD type 2
Network 120/208 V 3-phase+N
AC system TT-TNS
Max. AC operating voltage L-N Uc 150 Vac
Temporary Over Voltage (TOV) Charasteristics - 5 sec. UT 180 Vac withstand
Temporary Over Voltage (TOV) Charasteristics - 120 mn UT 230 Vac disconnection
Residual Current Ipe None
Follow current If None
Nominal discharge current In 15 kA
Max. discharge current Imax 25 kA
Total Maximal discharge current Imax Total 50 kA
Connection mode(s) L/N and N/PE
Protection level L/N Up L/N 0.9 kV
Residual voltage L/N at 5 kA Up-5kA 0.6 kV
Protection level N/PE at 5 kA Up-5kA 0.6 kV
Admissible short-circuit current Isccr 100 000 A
Technology MOV+GDT
SPD configuration 3-phase+Neutral
Connection to Network By screw terminals: 2.5-25 mm² (35 mm² rigid)
Format Plug-in modular box
Mounting Symmetrical rail 35 mm (DIN 60715)
Housing material Thermoplastic UL94-V0
Operating temperature -40/+85°C
Protection rating IP20
Failsafe mode Disconnection from AC network
Disconnection indicator 1 mechanical indicator by pole - Red/Green
Spare module(s) MDACF25-150+MDACG-150
Remote signaling of disconnection Output on changeover contact
Wiring for remote signaling 1.5 mm² max.
Maw. Voltage/Current for remote signaling 250 V / 0.5 A (AC) / 30 V / 3 A (DC)
Dimensions See diagram - 4TE (EN43880)
Standards compliance IEC 61643-11 / EN 61643-11 / UL1449 4ed.
Thermal disconnector Internal
Installation ground fault breaker Type 'S' or delayed
Fuses Integrated Fuse