CAT Electronic Rust Protection Systems
The CAT System is the Best Electronic Rust Protection System for motor vehicles in Australia and is a very popular and effective alternative rustproofing solution.
CAT Electronic Rust Protection Systems operate by “impressing” or “forcing” an alternating current (AC) of a specific waveform and frequency into the metallic body of the vehicle which interrupts the rusting process.
The CAT Electronic Rust Protection System is a high-quality product that uses the most advanced technology to protect your vehicle from rust and corrosion. It can work by itself or together with our spray-on coatings to create a powerful multi-layer rust protection solution for your vehicle.
Selection Guide
For passenger 2WD & 4WD vehicles that mainly drive on sealed roads, we recommend using the "2 Coupler" System. If you occasionally go off-road, we suggest the "4 Coupler" System. For those who frequently operate their vehicle near saltwater or on the beach, the "6 Coupler" System is the ideal choice. For vehicles used in high-risk environments, such as mine sites or coastal/offshore facilities, we highly recommend the "8 Coupler" System.
Choose your System
2 Pad CAT Electronic Rust Protection System
4 Pad CAT Electronic Rust Protection System
6 Pad CAT Electronic Rust Protection System
8 Pad CAT Electronic Rust Protection System
Our Services
Standard Protection
Ideal for everyday driving on sealed roads and urban environments. This level offers reliable year-round defence against general wear, moisture, and environmental exposure — perfect for city cars and daily commuters.
Off-Road Protection
Designed for vehicles that regularly face dirt, gravel, mud, and water. This level provides enhanced coverage to combat the extra stress and corrosion risks that come with off-road conditions and rural driving.
Extreme Environment Protection
Engineered for the harshest conditions — including coastal, beach, mining, and industrial zones. This level delivers maximum protection against saltwater, high humidity, and corrosive contaminants found in extreme work or coastal environments.
🔧 Easy DIY Installation — No Tools, No Hassle
The CAT System is specifically engineered for quick, hassle-free DIY installation — no drilling, no specialised tools, and no need to modify your vehicle. It’s designed to integrate seamlessly with your vehicle’s structure and won’t interfere with onboard electronics, with full EMC C-Tick, FCC, and E13 certification for peace of mind.
Whether you're a weekend DIYer or a professional installer, setup is simple and straightforward. The system is also completely safe, eco-friendly, and can be used alongside spray-on rustproofing coatings to build a powerful multi-layered defence against corrosion.
Every CAT System comes backed by a written 10-Year Manufacturer's Warranty, covering full product replacement. This warranty is recognised worldwide, offering you long-term confidence and support no matter where your vehicle takes you.
❄️ CAT for Air-Conditioners
Our Electronic Rust Protection Systems provide a reliable and cost-effective solution for preventing corrosion in residential and commercial air-conditioning units of all sizes. Engineered with the same advanced technology trusted in automotive and industrial sectors, CAT protects critical components from moisture, salt, and harsh environmental exposure.
Tested and proven in Australian conditions, CAT is the go-to choice for HVAC professionals who demand long-term reliability, low maintenance, and extended unit lifespan — even in coastal or high-humidity locations.
Happy Customers
Key Features
Purpose designed for Rust Suppression
The CAT Electronic Anti-Corrosion System is purpose-built to prevent rust in motor vehicles, trucks, buses, air conditioners, plant, and machinery of all types. It provides reliable, long-lasting protection across a wide range of applications and environments.
Auto-Switching 12V or 24V Operation
The CAT System automatically detects whether it’s connected to a 12VDC or 24VDC battery or power supply. It adjusts its internal operation and diagnostics accordingly, ensuring efficient performance in any compatible electrical system setup.
Modular Design - Easily Expandable
The Main Generator Module includes two output circuits, each supporting up to 6 coupler pads (or 12 in total). Additional coupler pads can be added at any time to enhance system performance. This allows easy scalability to suit different vehicle types or environmental conditions.
Shockproof and Waterproof
The full system — including the Control Module, Coupler Pads, Wiring Harness, and all connectors — is built tough. It exceeds IEC529, DIN40050, and IP67 standards, meaning it’s both shockproof and waterproof for max reliability and longevity. It’s engineered to withstand environments without compromising performance.
Why Choose CAT?
Not all electronic rust suppression systems are the same !
Only a "negative electrolysis" - "impressed current" system like CAT is capable of effectively preventing rust development in "free air structures" such as motor vehicles and mobile plant and machinery. You can rest assured that every component associated with CAT is of the highest quality, and nothing else in the world can match the performance of a CAT unit in protecting your assets.
An Innovative Product for Harsh Conditions
CAT has been a leader in ERPS (Electronic Rust Prevention Systems) since 1989. Our team of engineers has been tirelessly researching and developing the CAT System, which is a versatile product that consistently delivers exceptional results. With thousands of satisfied customers worldwide, CAT continues to be at the forefront of electronic rust prevention technology.
Modular Design - Expandable
Thanks to its unique modular design, CAT allows for easy expansion at any time. You can conveniently purchase Expansion Packs that enable you to extend the system's operation from 2 Pads up to a maximum of 12 Pads. With these readily available Expansion Packs, expanding the system is a breeze.
Your Partner in the War Against Rust!
Electronic rust proofing is a powerful tool that can significantly extend the life of vehicles and machinery by mitigating the damaging effects of rust and corrosion. By protecting your assets against rust and corrosion, you can save a substantial amount of money on repairs and replacements while enjoying greater peace of mind.
Certified
The CAT ERPS System is certified to comply with the electromagnetic standards of Australia/New Zealand, the US, and Europe, and is built to meet ISO 9001:2000 manufacturing and procedural requirements. This ensures that the system operates at a high level of quality and reliability, meeting the strictest international standards for electronic devices.
Guaranteed
CAT offers a 10-year product replacement guarantee for all its systems, providing customers with peace of mind and ensuring that their investment is protected. In addition to the product warranty, for the local Australian market, CAT also provides a vehicle corrosion warranty for up to 10 years. This further demonstrates CAT's commitment to providing high-quality and effective electronic rust protection solutions for vehicles and machinery.
CAT for Air-Conditioners
We offer a variety of Electronic Rust Protection Systems that are both effective and affordable for rust suppression in residential and commercial air-conditioners of any size. Our advanced technology has been tested and proven in Australian conditions, and is the top choice for many air-conditioning professionals.
