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        Klein Tools ET300AU | Digital Circuit Breaker Finder | 230V / 240V

        The Klein Tools ET300AU is a digital circuit breaker finder that accurately identifies the correct breaker for 230V and 240V powered outlets. It uses micro-processor controlled technology to detect the correct circuit without needing to shut off power—ideal for live circuit testing in residential, commercial or industrial environments.

        The bright green arrow and loud audible tone offer quick visual and audio confirmation, reducing testing time and error. With a transmitter range of up to 305 metres, the ET300AU supports large-site applications and fault tracing with ease.

        Klein Tools ET300AU Features

        • Digital Circuit Breaker Finder: Identifies correct breaker on live circuits.
        • 230V / 240V Compatible: Built for Australian power systems.
        • Micro-Processor Controlled: Provides consistent, accurate readings.
        • Works on Powered Circuits: No need to shut down service during testing.
        • Visual and Audible Confirmation: Green arrow and loud tone indicate correct breaker.
        • 305m Range: Supports long-distance signal transmission for larger sites.

        Where to use this Klein Tools ET300AU

        • Electrical maintenance work requiring breaker identification without service interruption.
        • Residential or commercial switchboard testing for fault tracing.
        • Industrial applications where long-range detection and accurate circuit ID is critical.

        (ET300AU)

        The Klein Tools ET300AU is used to quickly identify the correct circuit breaker for a live power point or circuit without shutting power off.

        Yes. It’s designed for 230V and 240V systems commonly used in Australian residential, commercial, and industrial installs.

        Yes. It’s designed to work on powered circuits, which helps avoid unnecessary shutdowns during testing.

        The receiver shows a bright green arrow and sounds a loud tone when the correct breaker is detected

        Yes. With a signal range of up to 305 metres, it’s suitable for large homes, commercial buildings, and industrial sites.

        Yes. Sparky Direct stocks the Klein Tools ET300AU with fast dispatch and fast Australia-wide delivery.

        100-Day Fuss-Free Returns
        We want you to love what you buy—but if you change your mind, that’s okay too. That’s why Sparky Direct offers a 100-day money-back guarantee.

        • Items must be unused, with all parts, accessories, and original packaging.
        • We can’t accept returns if the product is damaged, incomplete, or not in resalable condition.
        • Proof of purchase is required.
        • Return shipping is the responsibility of the customer. 

        If your item isn’t in its original condition, please contact us before returning it—we might save you time and money.

        All products come with a manufacturer’s or supplier’s warranty

        • Warranty starts from the Invoice Date
        • Some suppliers offer in-home warranties and handle claims directly, so you won’t need to uninstall or return the product. Chat with us to check if your product qualifies.
        • Sparky Direct isn’t responsible for losses caused by product failure.
        • Warranties are void if products aren’t installed by a licensed electrician.

        Damaged or Faulty Goods
        If your order arrives damaged or is faulty, let us know within 24 hours.

        • Sparky Direct will pay for return shipping via an emailed return label.
        • If the fault is confirmed, we will send you a replacement item or provide a refund.

        Contact us via our chat to arrange the return.

        Exclusions
        We can’t accept returns for:

        • Items that have been installed, modified, or used
        • Clearance, End of life, Discontinued, or special order items (unless faulty)
        • All PPE Items
        • Goods returned without original packaging or proof of purchase

        How to Request a Return

        1. Contact our customer service team with your order number.
        2. Confirm it’s eligible under our return or warranty policy.
        3. Pack the item securely and return it using a trackable service.
        4. Once we receive and inspect it, we’ll process your refund or replacement.

        Warranty starts from Invoice Date

        Domestic Use: 1 Year
        Commercial Use: 1 Year
        Warranty Method: Return to Sparky Direct

        These specifications and characteristics outline physical, mechanical, electrical details.

        Brand Klein Tools
        SKU ET300AU
        Barcode # 092644693076
        Package Weight 0.286kg
        Package Width 0.037m
        Package Height 0.265m
        Package Length 0.160m
        View Datasheet
        View Manual
        TYPE VALUE
        Type Circuit Breaker Finder
        Brand Klein Tools
        Overall Length 152.4mm
        Battery 9V
        Weight 0.24kg
        Voltage Range 90-280V AC
        Included 1x 9V Transmitter Battery
        Transmitter Range 305m
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