Surge
Protection Devices
Keeping people and property safe
Every electrical and electronic device has a specific dielectric strength against voltage fluctuations. If the voltage exceeds this strength, malfunctions and damage will occur.
![Child sitting by a window with raindrops, looking outside with a contemplative expression](https://assets.sc.hager.com/nz/-/media/project/hagerdeep/new-zealand/hager/new-zealand/002-solutions/application-field-modular-circuit-protection-devices/product-images/surge/surge-header-image.jpg?h=640&la=en-nz&hash=2D82FA0A87B9016A163A7F1854E3F7A0)
The three types of
surge protection devices
Protection technology from a single source
With the Hager SPD range, it is easy to select appropriate SPD products, from simple residential installations, to large commercial buildings with multiple switchboards, that require a complex cascading surge protection system.
To simplify SPD selection and cascading, we use the following terminology:
Spark Gap, Very Coarse, Coarse, Medium and Fine.
![](https://assets.sc.hager.com/nz/-/media/project/hagerdeep/new-zealand/hager/new-zealand/002-solutions/application-field-modular-circuit-protection-devices/product-images/surge/spd-single-source-image.jpg?w=1000&hash=64C937AB2CAB9EAD4491CE85B99749A0)
Protecting
human lives
Main benefits at a glance:
- simple retrofitting
- Australian, New Zealand and European standards compliant range
- easy to choose the right one
- safe and easy to install
- excellent results
![](https://assets.sc.hager.com/nz/-/media/project/hagerdeep/new-zealand/hager/new-zealand/002-solutions/application-field-modular-circuit-protection-devices/product-images/surge/surge-protect-human-lives.jpg?w=1000&hash=B46DEDEB5A62FC777A45C1A3B1D42C35)
Residential
building protection
![verdeelsysteem univers N HS](https://assets.sc.hager.com/nz/-/media/project/hagerdeep/new-zealand/hager/new-zealand/002-solutions/aplication-field-energy-distribution/product-page-surge-protection-devices/residential_efh_wf0701_8bit_5k_4c-square.jpg?w=1000&hash=89E43F22682C5E209E9B4E5730A705A4)
Commercial
building protection
We recommend Australian and New Zealand commercial premises install SPDs at multiple points to create a cascading surge protection system. This system will increase electrical resilience and minimise the risk of fire or downtime to the property and occupants. We offer a varied range of SPDs to allow electricians to select the most appropriate SPD for most commercial installations or applications.
![](https://assets.sc.hager.com/nz/-/media/project/hagerdeep/new-zealand/hager/new-zealand/002-solutions/aplication-field-energy-distribution/product-page-surge-protection-devices/office_large_8bit__6k_wf0301_4c-square.jpg?w=1000&hash=9087714AA16594EE98FC7D988DEF1CE9)
![](https://assets.sc.hager.com/nz/-/media/project/hagerdeep/new-zealand/hager/new-zealand/002-solutions/application-field-modular-circuit-protection-devices/product-images/surge/surge-brochure.png?w=1000&hash=857598D95070D5106DDC12F3369BDB01)
View our SPD range
![](https://assets.sc.hager.com/nz/-/media/project/hagerdeep/new-zealand/hager/new-zealand/002-solutions/aplication-field-energy-distribution/product-page-surge-protection-devices/011_hotlinesupport.png?w=120&hash=08AA4412EA122D9E493C9137B666AB7B)
Have a question?
Our team of technical experts are on hand and ready to answer any questions you may have!