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WSP240M1 (Mains, Type 1 & 2)

The WSP240M1 Wallis mains distribution protection surge protector
Wiring diagram of a WSP240M1 distribution surge protector

This single phase mains type 1 , 2 and 3 tested (BS EN 61643) surge protector is designed for use primarily on mains power distribution systems to protect connected equipment from transient overvoltages. For use at the boundaries of LPZ 0b to LPZ 3 as part of a coordinated SPD system (BS EN 62305).

Features and Benefits:

  • Full mode (All mode) protection.
  • Low let through voltage.
  • Protects against transient overvoltages without interruption of supply.
  • Pre-failure warning and reserve protection stages allow for continuous protection of equipment.
  • Proven technology for safe disconnection of the device from abnormal supply conditions or at end of life.
  • Per-phase visual indication of surge protection status.
  • Remote changeover contacts can be used for integration into a building management system or other remote warning systems.
  • Visual indication, via an LED, of high neutral to earth voltages. High neutral to earth voltages indicate potentially dangerous site conditions/faults.
  • Robust epoxy coated steel construction.
  • The compact design allows the unit to be installed in any convenient location, minimising the length of connecting cables and let-through voltage (Up).
Nominal VOperating V RangeMax. Surge Current 10/350μsNominal Surge Current 8/20μsMax. Surge Current 8/20μsLet-through VPart Number
Nominal V240Operating V Range200-300 (L-N)Max. Surge Current 10/350μs6.25kANominal Surge Current 8/20μs20kAMax. Surge Current 8/20μs40kALet-through V<1.5kV @ In; <800V @ IimpPart NumberWSP240M1

Tested: BS EN 61643-11

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