Surge Protector Device (SPD)
SPD
The Htst1-c series surge protector (SPD) is designed for AC 50/60Hz, 380V and below power systems including TT, IT,...
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Surge Protector Device (SPD) Product Range
Surge protector devices for AC 50/60Hz, 380V and below in TT, IT, TN-S, TN-C-S power systems. Designed for surface equipotential bonding in LPZ1, LPZ2, and LPZ3 zones, with DIN-rail mounting and built-in failure indication.
Every Surge Protector Device (SPD) Model We Build
Positioning
What This Range Is For
Surge protector devices for AC 50/60Hz, 380V and below in TT, IT, TN-S, TN-C-S power systems. Designed for surface equipotential bonding in LPZ1, LPZ2, and LPZ3 zones, with DIN-rail mounting and built-in failure indication.
Who Buys This Range
- Electrical wholesalers stocking surge protection for residential and commercial panels
- Panel builders integrating SPDs into distribution boards and switchgear assemblies
- Solar EPC contractors protecting inverters and control systems from transient overvoltages
- Smart-home integrators installing SPDs in zones with sensitive electronics
- OEMs building control cabinets that require surge protection with visible fault indication
Problems It Solves
- Surges from lightning or switching events can damage sensitive electrical equipment in distribution boards
- Lack of visible failure indication makes it hard to know when a surge protector has degraded or failed
- Different zones in a building require coordinated SPD protection, but mismatched devices complicate installation
- Non-standard mounting options increase panel space use and installation time
- Buyers need a single SPD series that supports multiple earthing systems and protection zones
Where It Is Used
- Surge protection in residential consumer units with TN-S or TN-C-S earthing
- Distribution boards in commercial buildings requiring multi-zone SPD coordination
- Solar PV systems where inverters and combiner boxes need protection from lightning-induced surges
- Industrial control cabinets with sensitive electronics exposed to switching transients
- Data and communication equipment rooms protected by SPDs at the main and sub-panels
Advantages
What Separates This Range
- Built to IEC61643-1 and GB18802.1, covering multiple power system types including TT, IT, TN-S, TN-C-S
- Designed for LPZ1, LPZ2, and LPZ3 zones, enabling layered surge protection
- 35mm DIN-rail mounting for quick and secure installation in standard electrical enclosures
- Built-in failure indication to show when the device has degraded or is no longer functional
- Same factory produces conventional and smart versions of low-voltage devices, enabling consistent sourcing
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FAQ
Surge Protector Device (SPD) Questions
What standards are these SPDs built to
IEC61643-1 and GB18802.1 are the standards referenced in the product description.
What voltage and frequency range do they support
AC 50/60Hz, 380V and below, suitable for common low-voltage power systems.
Which earthing systems are compatible
TT, IT, TN-S, TN-C-S, and other common power supply systems.
Where can these be installed in a building
Designed for LPZ1, LPZ2, and LPZ3 zones, suitable for main distribution boards and sub-panels.
Do they show when the surge protection has failed
Yes, the product is built with a failure indication feature to signal when protection is no longer active.
What mounting method do they use
35mm electrical guide rail mounting, standard in most industrial and commercial panels.
Can you supply under our own brand
Yes. ODM partnerships and custom branding on housing and packaging are available on request.
Quote This Category
Surge protector devices for AC 50/60Hz, 380V and below in TT, IT, TN-S, TN-C-S power systems. Designed for surface equipotential bonding in LPZ1, LPZ2, and LPZ3 zones, with DIN-rai