AERL EarthGuard Ground Fault Detection - EG-300
Must be Installed by Electrician
AERL Products are Australian Made

AERL EarthGuard Ground Fault Detection - EG-300

Regular price $693.00 Sale price$658.35
Tax included. Shipping calculated at checkout.

AERL EarthGuard Ground Fault Detection - EG-300:


Utilizing proprietary detection techniques, the AERL EarthGuard Insulation Monitoring Device simultaneously monitors the unearthed PV Array (60 - 300V) and Battery Storage System (48/120V) for conductor insulation degradation.

Installed on the battery bus, the EarthGuard monitoring device satisfies the earth fault detection requirements of both AS/NZS 5033:2014 & AS/NZS 5139:2019 with onboard audio/visual alarms and an alarm relay output for external fault indication.

Featuring support for full integration with AERL’s CoolMax SRX charge controller range, EarthGuard can be utilized in an integrated arrangement or as a standalone device for use with approved third-party controllers, power conversion equipment
and battery systems.


Data sheet here

Manual here

Warranty guide here

Do I need an EarthGuard? Here

Note: The AERL EarthGuard must be installed by a licensed Electrician




- 60 – 300V PV Monitoring Range
- Supports 48V & 120V Batteries
- One EarthGuard Per System (When used with AERL CoolMax SRX regulators)
- High Accuracy Detection
- Audio & Visual Alarms
- Alarm Indication Relay


Note: This product comes with a 3 year warranty. It can be extended for an additional 2 years (5 years in total) by registering your purchase here


SolarBox Australia will process your order within 1-2 business days. For product availability you can call us, use the chat function or email SolarBox directly at: If there is a delay on your order or your item is out of stock you will be emailed immediately to let you know.

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What is a warranty? A warranty is a voluntary promise offered by the person or business who sold the product or service to you. Once you buy the product or service, the promise becomes a right that can be enforced under the ACL. Warranties are separate from your automatic consumer guarantees. The consumer guarantees which apply regardless of any warranties suppliers sell or give to you, apply for a reasonable time depending on the nature of the goods or services. This means consumer guarantees may continue to apply after the time period for the warranty has expired.

View the product warranty page here for more information.

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