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Surge Protectors
WSA+N Surge Protective Device
The T/T arrangement of the WSA platform. The same three discharge ratings are supplied with a dedicated N-PE module alongside the phase modules, for installations where the neutral is not bonded to earth at the board. Six models: 1P+N on two modules, 3P+N on four.
Technical overview
Core specifications
TypeType 2
SystemT/T, with N-PE protection
Poles1P+N (2 modules), 3P+N (4 modules)
Model rangeWSA120+N / 140+N / 160+N (1P+N) · WSA320+N / 340+N / 360+N (3P+N)
Maximum working voltage Uc275 / 380V
Temporary overvoltage withstand UT440 / 660V AC
Nominal discharge current In10kA (WSA120-320+N) · 20kA (WSA140-340+N) · 30kA (WSA160-360+N)
Maximum discharge current Imax20kA (WSA120-320+N) · 40kA (WSA140-340+N) · 60kA (WSA160-360+N)
Voltage protection level Up1.3kV at 10kA · 1.5kV at 20kA · 2.0kV at 30kA
Residual voltage at 5kA1.2 / 1.3 / 1.5kV
Admissible short-circuit current25kA
Backup fuse gG63A max (WSA120-320+N) · 100A max (WSA140-340+N and WSA160-360+N)
Operating temperature-40 to +85 degrees C
Protection classIP20
Dimensions90 x 36mm (1P+N) / 90 x 72mm (3P+N) x 67mm, 35mm DIN rail
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Technical files
Datasheet, dimensions and certificate scope
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PDF · Product datasheet DWG/PDF · Dimensions & installation PDF · Certificate scope
Request Technical Files Typical use
- T/T residential installations
- Commercial distribution boards
- Panel builder assemblies
Compliance references
- IEC / EN 61643-11
- CE · UKCA marked on the product
Customisation scope
- Marking
- Packaging
- Model assortment
Related products
Other products supplied for the same installations.
Surge Protectors
WSA Surge Protective Device
Type 2 protection across twelve models: three discharge ratings in one to four poles, so a single-phase consumer unit and a three-phase board with neutral are served from the same platform. A window on each module turns red when the module has reached the end of its life and needs replacing.
View specifications →
Surge Protectors
WSP Mini Surge Protective Device
The same Type 2 duty in a single module instead of two, for boards where the spare ways are the constraint. The protection cartridges are pluggable, so a module that has reached the end of its life is exchanged without disturbing the wiring, and a green window plus a remote alarm contact both report the fault.
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Surge Protectors
WSP+N Mini Surge Protective Device
The T/T version of the mini range, protecting L-N and N-PE from one module. Each rating is supplied in two connection formats — busbar and wire — so it drops into a busbar-fed board or one wired module by module without changing the device.
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