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Engineered Surge Protection for Demanding Environments
Surge Protective Devices (SPDs) are essential components in safeguarding electrical systems from transient overvoltages, which can damage or degrade sensitive equipment. Protecting your electrical installation with SPDs helps prevent unexpected downtime, equipment failures, and costly maintenance. SPDs work by detecting sudden voltage spikes and diverting excess energy away from critical circuits before it can cause harm. Their application spans residential, commercial, and industrial systems.
Westhomes offers multi-level surge protection solutions tailored for different points in your power system—from the main service entrance to end devices. SPDs are categorized into Type 1, Type 2, and Type 3. In factory and heavy-duty settings, Westhomes SPDs support a multi-level protection strategy that isolates surges at the service entrance, distribution boards, and end devices. The modular design allows seamless integration with switchgear and automation systems, while their wide operational temperature range (–40 °C to +85 °C) ensures reliability in harsh environments. By incorporating class-based SPDs at each tier, facilities can achieve a layered defence against transient threats, thus maintaining uptime.
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FAQ
What is an SPD
A Surge Protection Device (SPD) protects electrical and electronic systems from damaging transient overvoltages—whether from lightning strikes, grid switching, or internally generated surges. By diverting or limiting spike energy, SPDs prevent equipment malfunctions, reduce downtime, and extend the lifespan of sensitive devices.
What are the different SPD types and where are they installed?
SPDs are categorized by their application point and energy-handling capability:
- Type 1 units (service entrance): manage high-energy lightning-induced surges.
- Type 2 units (distribution panels): handle residual and switching surges.
- Type 3 units (point-of-use): protect sensitive electronics locally.Combining these creates a layered protection strategy—also used by Westhomes for multi-tier surge defense
What technical specs do Westhomes SPDs offer?
Westhomes provides DIN-rail SPDs designed for 110–400 V AC systems at 50/60 Hz, featuring:
- Discharge capacities from 10 kA to 100 kA
- Clamping voltage ranges between 0.7 kV and 2.8 kV
- Fast response times (<25 ns)
- Wide operation temperature: –40 °C to +85 °C
- Modular design with four-conductor protection for phases and neutral, enabling integration into digital switchgear and protection systems
Are Westhomes SPDs suitable for factory and industrial settings?
Yes. These SPDs support multi-level protection strategies—from service entrance to end devices—and are ideal for harsh environments due to:
- Compact DIN‑rail integration with automation systems
- Modular compatibility for scalable, layered protection
- High temperature and discharge rating for compliance with industrial standards
- Inclusion in manufacturing panels, motor control centers, data rooms, and safety systems to help reduce unplanned outages and extend equipment lifespan
Can SPDs be used for non-power services?
Absolutely. External services—such as telecom, data lines, cable TV, and antenna systems—can provide alternate paths for surge entry. Westhomes SPDs, in coordination with coaxial/data line protection solutions, provide comprehensive surge defense across all service lines
What standards do Westhomes SPDs comply with?
They comply with key international safety and performance standards, including IEC and EN classifications, and feature thermal protection, fast response times, modular design, and DIN-rail mounting—comparable to high-end solutions in the industry. For OEMs and system integrators, Westhomes also offers customizable options such as private labeling, tailored electrical ratings, form factor adjustments, and integration-ready configurations for automation panels and smart distribution systems.
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