Surge Protection
Surge Protection Devices (SPDs): Reliable Defense for Electrical Systems
Surge Protection Devices (SPDs), also known as surge suppressors or transient voltage surge suppressors (TVSS), are essential for shielding electrical systems and connected equipment from damaging voltage spikes—whether caused by lightning strikes, power grid switching, or internal faults. Unlike circuit breakers that cut power during overloads, SPDs act instantly to divert excess energy to ground, protecting sensitive electronics and infrastructure.
Why Surge Protection Matters
- Safeguards electronics and appliances from transient overvoltage.
- Minimizes downtime by avoiding costly equipment damage.
- Helps maintain long-term electrical system reliability and performance.
SPD Types & Where They Belong
Surge protectors are categorized based on installation location and protection strength:
- Type 1 – Installed at the service entrance, handling high-energy transients like direct lightning strikes.
- Type 2 – Mounted at distribution panels or sub-panels, guarding against residual surges and switching events.
- Type 3 – Placed near sensitive equipment outlets, providing fine, localized protection.
When layered together, these SPDs form a coordinated defense—addressing both external and internal surge threats.
