---
title: "What Is Type 2 SPD? Electrical Glossary | Daniel Electric"
description: "A Type 2 SPD installs on the load side of the main breaker, at the panel, to protect against internal surges and leftover surge energy."
url: https://danielelectric.multisites.ai/glossary/type-2-spd
publisher: Daniel Electric
phone: +1-817-481-8606
quote: https://danielelectric.multisites.ai/contact
---

Safety devices

# Type 2 SPD

A Type 2 SPD installs on the load side of the main breaker, at the panel, to protect against internal surges and leftover surge energy.

Leviton describes Type 2 devices as giving the same protection as Type 1 but mounted on the load side of an electric service panel. They guard against residual lightning energy, motor-driven surges and other surges made inside the building. Type 2 devices can also be tiered on branch circuits for added protection.

Compare a [Type 1 SPD](https://danielelectric.multisites.ai/glossary/type-1-spd), which goes ahead of the main breaker. Both are kinds of [surge protective device](https://danielelectric.multisites.ai/glossary/surge-protective-device). Work inside a panel is for a licensed electrician. See [whole-house surge protector installation](https://danielelectric.multisites.ai/whole-house-surge-protector).

[Daniel Electric can helpWhole-house surge protector installation](https://danielelectric.multisites.ai/whole-house-surge-protector)

## Related terms

-   [Type 1 SPD](https://danielelectric.multisites.ai/glossary/type-1-spd)
-   [Surge protective device](https://danielelectric.multisites.ai/glossary/surge-protective-device)
-   [Whole-house surge protector](https://danielelectric.multisites.ai/glossary/whole-house-surge-protector)
-   [Main breaker](https://danielelectric.multisites.ai/glossary/main-breaker)

## Sources

1.  [Leviton: Surge Protective Devices (SPDs) brochure](https://leviton.com/content/dam/leviton/commercial-industrial/product_documents/brochure/Surge%20Brochure%20Condensed%20Q-1186H%20(1)%20(2).pdf)
2.  [Leviton: NEC Code Requirements For Surge](https://leviton.com/products/commercial/surge-protection/nec-code-requirements-for-surge)

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## Need an electrician in Southlake?

Call and tell us what is going on. A photo of the panel label or the problem helps us come prepared. Quotes on new installations are free.

[Call (817) 481-8606](tel:+1-817-481-8606)[Get a quote](https://danielelectric.multisites.ai/contact)

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