Intermatic AG3000 HVAC Surge Protective Device
- 3 modes: L-G, L-L, L-N
- TPMOV thermally protected varistors
- Type 4X enclosure, watertight and UV resistant
- Green LED protection status
- UL 1449 5th Edition listed
- 3-year product warranty, plus 3-year equipment coverage
Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A weatherproof surge protector for an outdoor AC condenser or heat pump with thermally protected parts. It needs to be wired in by a qualified installer, and its surge kA rating is not stated.
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ASIN: B008VM6MXIModel: AG3000Category: Surge Protectors
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Overview
An outdoor AC condenser or heat pump disconnect is where this Intermatic surge device mounts, inside a watertight, UV-resistant enclosure. Thermally protected varistors clamp surges across three modes and a green LED shows status.
Protecting HVAC control boards from outdoor surges is the reason to fit it, and the TPMOV design avoids hazardous failure. The listing omits the surge current rating.
Who it's for
Owners of central AC or heat pumps in storm-prone areas get weatherproof protection at the equipment. Renters or anyone without an electrician should look at plug-in protection.
Pros and cons
- Weatherproof Type 4X enclosure
- Three protection modes
- Thermally protected varistors
- LED shows status
- Surge current rating not listed
- Requires electrical installation
- Wire gauge and mounting details missing
Performance notes
Surge devices work by clamping excess voltage to ground, and thermal protection disconnects the varistor before it can overheat. Covering line-to-ground, line-to-line and line-to-neutral paths catches surges arriving on any conductor. Mounting close to the equipment shortens the path a surge takes.
Specifications
| Brand | Intermatic |
|---|---|
| Model | AG3000 |
| Construction & materials | |
| Enclosure Material | Type 4X watertight, UV resistant plastic |
| Warranty & support | |
| Warranty Description | 3-year product, 3-year connected equipment warranty |
| Other details | |
| External testing certification | UL 1449 5th Edition |
| Item Highlight | Green LED protection status |
| Other Special Features of the Product | 3 modes of protection L-G, L-L, L-N; TPMOV technology |
| Recommended Uses For Product | HVAC equipment |
Frequently asked questions
Is the Intermatic AG3000 a plug-in surge strip?
No. It is a surge protective device for HVAC equipment in a Type 4X enclosure, suited to indoor and outdoor setups.
What does TPMOV mean on the Intermatic AG3000?
Thermally Protected Metal Oxide Varistor, which Intermatic says eliminates hazardous failure modes of standard MOVs.
How do I know the Intermatic AG3000 is working?
A green LED indicates protection status.
What warranty comes with the Intermatic AG3000?
A 3-year product warranty and a connected equipment warranty for 3 years.