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WSP415/III/TT (Mains, Type 1 & 2)

An image of the discontinued Wallis surge product WSP415/III/TT
Wiring diagram of a WSP415-III-TT mains distribution surge protector


Please view our replacement product WSP50/T1 or alternatively please contact our sales office on +44 (0) 115 927 1721 and we will help you select the right product for you.

Three Phase Type 1 and 2 tested (BS EN 61643) surge protector for use primarily on mains power distribution systems to protect connected equipment from transient overvoltages.

Designed for use at the boundaries of LPZ 0a to LPZ 2 as part of a coordinated SPD system (BS EN 62305), this type of protection is usually used for equipotential bonding in structures that have a Lightning Protection System (LPS) fitted, at the point cables enter the structure (LPZ 0a or b to LPZ1 boundary).

Features and Benefits:

  • For use on TT, TNS & TNC Systems.
  • Repeated protection in lightning intense environments.
  • Per-phase remote signalling contacts allow surge protection ststus to be monitored via a building management system.
  • Thermal disconnect for safe disconnection from abnormal or faulty supplies.
Nominal VOperating V RangeMax. Current RatingMax. Surge Current 10/350μsNominal Surge Current 8/20μsMax. Surge Current 8/20μsLet-through VLocationPart Number
Nominal V415Operating V Range275 Max (L-N)Max. Current RatingN/A or 125A (config dependant)Max. Surge Current 10/350μs12.5kA (L to N) (per phase); 50kA, (N to PE)Nominal Surge Current 8/20μs25ka (per phase)Max. Surge Current 8/20μs40kA (L to N) (per phase); 40kA, (N to PE)Let-through V<1.2kV @ IimpLocationLPZ 0-1 or 1-2Part NumberWSP415/III/TT

Tested: BS EN 61643-11

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