Australia 
Hager The Hager Wrong Insertion Preventer HW2/4 HWS2/4 for air circuit breakers ensures correct mating of withdrawable/plug-in units, eliminating mismatching and polarity errors. Mechanical keying enhances safety and reliability, reducing downtime and damage risk. Compatible with HW2/4 and HWS2/4 ranges, it installs easily, is robust and maintenance‑free—ideal for safe operation and compliant maintenance in switchboards.
EAN
3250613183974
Packaging
1 Piece
Wrong insertion preventer HW2/4 HWS2/4 for Air Circuit Breakers HWY277H
Phase out product: please contact your electrical wholesaler for availability
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Environmental value
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Certifications and documents
Downloads
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Product image
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Product datasheet
Hager Product data sheet HWY277H
Wrong insertion preventer HW2/4 HWS2/4 (WIP)
PDF -
Instruction manual
Instruction manual International 2025-04-29
PDF1,27 MB -
Installation manual
Safety instructions
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PDF159,14 kB -
Declaration of conformity
EU Declaration of Conformity
Declaration of conformity en-GB 2025-11-04
PDF413,59 kB
UKCA Declaration of Conformity
Declaration of conformity en-GB 2025-11-04
PDF418,76 kB
More documentation