PIIIM-275/1+1 Vseries

Article number: 27 014
  • Surge arresters type T2 ensure the equipotential bonding and reduce switching, induced and residual overvoltage in LV power supply systems.
  • The products consist of varistors with big discharge ability.
  • Configurations 1+1 and 3+1 are additionally combined with a gas discharge tube which ensures zero leakage current through the PE conductor.
  • Installed on the interface of LPZ 1 – LPZ 2 into subsidiary switchboards and control boxes.
  • M indication specifies a type of construction with removable module.
  • DS indication specifies a version with remote monitoring.
  • Other voltage levels can be produced on request.
Test class according to EN 61643-11:2012 (IEC 61643-11:2011) T2
System TN-S, TT
Number of poles
Rated operating AC voltage UN 230 V
Maximum continuous operating voltage AC UC 275 V
Maximum discharge current (8/20) Imax 50 kA
Nominal discharge current for class II test (8/20) In 20 kA
Total discharge current (8/20) L+N->PE ITotal 50 kA
Voltage protection level at In Up < 1.3 kV
Impulse discharge current for class I test (10/350) N/PE Iimp 20 kA
Temporary overvoltage test (TOV) for tT = 5 s (L/N) UT 335 V
Temporary overvoltage test (TOV) for tT = 0.2 s (N/PE) UT 1 200 V
Response time (L/N) tA < 25 ns
Response time (N/PE) tA < 100 ns
Maximal back-up fuse 160 A gL/gG
Short-circuit current rating at maximum back-up fuse ISCCR 60 kArms
Lightning protection zone LPZ 1-2, LPZ 2-3
Housing material Polyamid PA6, UL94 V-0
Degree of protection IP20
Operating temperature ϑ - 40 ÷ 70 °C
Minimum cross-section of connected Cu conductors accord. to HD 60364-5-53:2022 (doesn't apply to „V“ connection) for T2 S 2.5 mm² (L, N)
6 mm² (PE, PEN)
Clamp fastening range (solid conductor) 2.5 ÷ 35 mm2
Clamp fastening range (stranded conductor) 2.5 ÷ 25 mm2
Tightening moment 4
Installation On DIN rail 35 mm
Modular width 2
Operating position Any
Signalling at the device Optic
Importance of local signaling OK – green target
FAULT – red target
Remote signalling No
Modular design Yes
Article number of spare module 27 044, 27 049
Lifetime > 100 000 h
Quick contact
Ing. Aneta Sčebelová
 +420 494 942 314