The Most Effective Electronic Rust Protection System Available

CAT Modular System web graphic

Cars and Motorcycles

Image of cars and bikes with electronic rust protection

Recreational 4WD's

Image of a 4WD car driving in the sand

Mining and Industrial

Image of a mining car with corrosion protection

Trucks and Transport


Agriculture and Earthmoving




Key System Information

Purpose designed for Rust Suppression !

The CAT Electronic Anti-Corrosion System is purpose designed to suppress rust developement in motor vehicles, trucks, buses, air conditioners and many other types of plant and machinery.

Auto-Switching 12V or 24V Operation !

The CAT System will operate from either a 12VDC and 24VDC battery or power source and the unit will automatically detect the input voltage and adjust its function and diagnostic accordingly.

Modular Design - Easily Expandable

The Main Generator Module has 2 output circuits. Each output circuit is capable of supplying up to 6 coupler pads linked in series (or a total of 12 Coupler Pads for both circuits). Additional coupler pads can be added at any time to boost the operation of the system.

Shockproof and Waterproof !

The entire system including Main Control Module, Coupler Pads, Wiring Harness and all connectors and both shock and waterproof (exceeds IEC529, DIN40050 and IP67 standards).

DIY Consumer Installation Kits from $365.00

Use this Selection Guide to find which CAT System best suits your requirements
  • Select "Select Vehicle / Equipment Type" 1. Single Cab Utility2. Dual Cab Utility3. Sedan4. Wagon or SUV5. Van or People Mover less than 9 seats6. Motorcycle or ATV7. Trucks, Buses, Machinery8. Air Conditioner

  • Select "Tray Type" 1. Steel Tray2. Alloy Tray
  • Select "Chassis Length" 1. Less than 7m2. 7m to 10m3. Greater Than 10m
  • Select "Air Conditioner Size" 1. <10kw2. >10kw
  • Select "Vehicle Use" 1. On Road2. Off Road3. Beach Use - Occasional4. Beach Use - Frequent5. Snow6. Construction, Mining, Agriculture
  • Select "Vehicle Condition" 1. Brand New - No Rust2. Some Surface Rust3. Moderate - Heavy Rust
  • Installation ? (DIY Fitting is Recommended)1. I will install it myself2. I will need it installed
  • (* Required)

    Send me a Quote ? YesNo
    (* Required)


    10 Year Guarantee

    10 year System and Vehicle Corrosion Warranty.
    (T's & C's apply)

    Free Shipping

    Free Shipping Worldwide for orders over $50.00

    Refunds & Returns

    All systems come with a FULL-30-Day money back guarantee.

    Customer Reviews

    5 days ago
    Ross Wardill
    (verified owner)
    Arrived swiftly. Had a great chat with the 1800 number guy!
    2 weeks ago
    Ulisses S.
    (verified owner)
    Great service, Very helpful staff and fast delivery
    2 weeks ago
    Sharon F.
    (verified owner)
    Great communication, price and delivery time.
    2 months ago
    Tristan P.
    (verified owner)
    Customer service was brilliant, very quick postage and super easy installation. Overall I am very happy!
    3 months ago
    Jonathan Johns
    (verified owner)
    Great service, friendly and efficient
    4 months ago
    Brian W.
    (verified owner)
    Good support from the company and Phil it was easy to install but a bit of a task hiding the wiring and making tidy under bonnet cheers guys

    Why Choose CAT ?

    Not all electronic rust suppression systems are the same !

    A "negative electrolysis" - "impressed current" system like CAT is the ONLY method effective on ‘free air structures’ like motor vehicles and mobile plant and machinery. You can be assured that everything associated with CAT is quality and with a CAT unit protecting your asset there is nothing in the world that could be doing a better job.

    An Innovative Product for Harsh Conditions

    For more than 28 years our team of engineers have been researching and developing the CAT System which is a versatile product that constantly delivers outstanding results. CAT are the leaders in ERPS (Electronic Rust Prevention System) with thousands of satisfied customers worldwide

    Modular Design - Expandable

    CAT's unique modular design allows for easy expansion at any time. Expansion Packs are readily available and can easily extend the operation of the system from 2 Pads up to a maximum of 12 Pads.

    Your Partner in the War Against Rust!

    Electronic rust proofing extends the life of vehicles and machinery by reducing the damaging effect of rust and corrosion. This saves owners money and provides peace of mind.


    The CAT ERPS System is certified to Australian/New Zealand, the US and European electromagnetic compliance standards and are built to ISO 9001:2000 manufacturing and procedural requirements.


    All CAT systems are covered by 10-year product replacement guarantee and for the local Australian market we also provide a vehicle corrosion warranty for up to 10 years.

    CAT for Air-Conditioners

    Slider – Protects Air Conditioners
    Our range of Electronic Rust Protection Systems will provide an effective and affordable rust suppression solution for any size residential and commercial air-conditioner.

    This advanced technology has been tried and proven in Australian conditions and is the preferred choice of many air-conditioning professionals.