Bad Wolf surge protectors are built smarter and stronger than the competition. We use the latest, purpose-built technology—each component engineered for its exact role—so every surge, from tiny spikes to massive surges, is handled quickly and safely. That’s why Bad Wolf delivers protection you can truly trust.
Why Bad Wolf Surge Protectors Are Built Better
When it comes to protecting your home and electronics, not all surge protectors are created equal. Bad Wolf takes a technology-first approach, using advanced, purpose-built components—each designed for its exact role—to deliver layered, high-performance protection that generic surge protectors can’t match.
1. TVS Diodes: Instant Spike Protection
TVS (Transient Voltage Suppression) diodes react in nanoseconds to sudden voltage spikes. This rapid response ensures that small, fast surges—like those caused by appliances switching on or minor grid fluctuations—are clamped before they can damage sensitive electronics.
2. GDTs: Handling High-Energy Surges
Gas Discharge Tubes (GDTs) act like a safety valve for high-energy events, such as lightning strikes or power line surges. When voltage exceeds safe limits, GDTs divert excess energy safely to the ground, protecting your entire electrical system from catastrophic damage.
3. MOVs: Absorbing Lingering Overvoltages
Metal Oxide Varistors (MOVs) provide an extra layer of protection by absorbing any lingering or moderate surges that escape the fast-acting TVS diodes or GDTs. This ensures your devices remain safe even during prolonged voltage irregularities.
4. Layered Protection for Maximum Safety
By combining TVS diodes, GDTs, and MOVs in a coordinated, purpose-built system, Bad Wolf surge protectors deliver fast, strong, and reliable defense. Each component handles the surge type it’s best suited for, giving your electronics comprehensive protection from minor spikes to major surges.
5. Why Bad Wolf Stands Apart
Unlike many manufacturers that rely on generic or one-size-fits-all components, Bad Wolf engineers every protector with precision. This focus on advanced technology and tailored component design ensures superior performance, longer device life, and peace of mind for homeowners.
Typical Response Time Figures
| Device Type | Approximate Response Time | Source Notes |
|---|---|---|
| TVS Diode | <1 ns (picoseconds) | Fastest technology; ideal for protecting sensitive electronics. |
| MOV (Varistor) | ~10–50 ns | Nanosecond class; suitable for general surge suppression on power lines. |
| GDT (Gas Discharge Tube) | ~100 ns to >1 μs | Slowest; better for high-energy lightning surges, not fast spikes. |
The chart shown compares relative component cost for the three most common surge protection technologies used in SPDs:
How to interpret the graph
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MOV (Metal Oxide Varistor) – Lowest cost. Widely used in residential and commercial surge protectors due to very low unit pricing and ease of implementation.
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TVS Diode – Moderate cost. More expensive than MOVs because of tighter tolerances, faster response times, and better clamping precision.
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GDT (Gas Discharge Tube) – Highest cost. Typically used in higher-end or industrial designs where very high surge current handling and long service life are required.

