In today’s technology-driven world, our homes and businesses rely heavily on sensitive electronic equipment — from computers and TVs to industrial machinery. Power surges, caused by lightning strikes, utility switching, or even everyday appliance startups, can damage or destroy these devices in microseconds. That’s where Surge Protection Devices (SPDs), also known as surge protectors or transient voltage surge suppressors, come in.
At Watts & Ergon, we specialize in high-quality surge protection solutions designed to keep your electrical systems safe and reliable.
Power surges are brief spikes in voltage that exceed the normal operating level. Common causes include:
Even small surges can degrade electronics over time, while large ones can cause immediate failure.
SPDs are installed in parallel with the electrical circuit. Under normal conditions, they remain largely inactive. When a surge occurs, the SPD activates rapidly to divert or absorb the excess energy.
The most common component in modern SPDs is the Metal Oxide Varistor (MOV):
Other technologies like Gas Discharge Tubes (GDTs) may complement MOVs for enhanced performance.
| Type | Installation Location | Primary Protection Against | Typical Applications |
|---|---|---|---|
| Type 1 | Between utility transformer and main service panel | Direct lightning strikes, high-energy surges | Service entrance, main panels |
| Type 2 | Load side of main service panel (sub-panels) | Residual surges, switching transients | Distribution boards, branch circuits |
| Type 3 | Point-of-use (outlets, cord-connected) | Low-level surges near equipment | Individual devices, power strips |
Watts & Ergon, recommends a layered approach: Type 1 or 2 at the main panel combined with Type 3 at critical devices.
At Watts & Ergon, we provide premium SPDs engineered for durability and maximum protection. Our products feature advanced MOV technology, high surge current ratings, and easy installation options for residential, commercial, and industrial use.
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