Intermatic AG3000 Surge Protector

Protect your vital mechanical assets and electronic components from transient voltage spikes with the Intermatic AG3000 Surge Protector. This heavy-duty HVAC surge protective device is engineered specifically for the electrical demands of residential and light commercial systems, including central air conditioners, high-efficiency furnaces, heat pumps, and ductless mini-splits. Unlike standard varistors that can pose a fire risk upon failure, this unit utilizes state-of-the-art TPMOV (Thermally Protected Metal Oxide Varistor) technology to ensure a safe, localized disconnect if the device reaches its end-of-life status.

The Intermatic AG3000 provides robust three-mode protection (L-N, L-G, L-L) with a 20kA surge current capacity, effectively shielding control boards and compressor motors from utility grid fluctuations and lightning-induced surges. Housed in a Type 4X watertight and UV-resistant enclosure, it is built for direct installation on the disconnect or service panel. The integrated green and red LED indicators offer technicians immediate diagnostic feedback on the protection status without needing a multimeter to verify functionality.

Key Benefits

• Advanced TPMOV Technology: Eliminates hazardous failure modes common in traditional MOVs by providing thermal disconnect during overload.
• Type 4X Outdoor Rating: The rugged polycarbonate housing is corrosion-resistant and watertight, ideal for harsh exterior environments.
• Universal HVAC Compatibility: Designed for 120/240 VAC single-phase systems, protecting air handlers, boilers, and condensing units.
• Simplified Installation: Features 18-inch 10 AWG tinned copper leads and a 1/2-inch threaded nipple for quick mounting to standard disconnects.
• Diagnostic Status Monitoring: Includes dual LED indicators for at-a-glance confirmation that the suppression circuit is active.

Common Questions

What is the difference between Type 1 and Type 2 SPD applications for this unit?
The AG3000 is dual-rated. As a Type 1 device, it can be installed on the line side of the main service entrance. As a Type 2 device, it is typically installed on the load side of the branch circuit, such as at the HVAC disconnect.

Can I use this surge protector on a 120V circuit?
Yes. While designed for 120/240V split-phase systems, you can install it on a 120V single-phase circuit by connecting both black leads to the line and the white lead to neutral/ground, effectively doubling the protection capacity.

What do the LED status lights indicate?
A bright green LED confirms the unit is fully operational. If the red LED is illuminated or no light is visible, the suppression capacity has been exhausted, and the unit must be replaced to maintain equipment protection.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.