Index A/C protection
ACX-10 Air Conditioning Life Extender
As an A/C system loses charge, the compressor clutch cycles faster and faster – wearing out the clutch, compressor and hoses. The ACX-10 catches rapid cycling before you notice the A/C isn’t working properly.

- 4 / minmax clutch engagements
- 15 sstart-up delay
- 12 / 24 Vversions
How it works
How It Protects
Cycling, Voltage and Start-Up
The ACX-10 limits the A/C clutch to four engagements a minute, stopping heat build-up. If voltage is too high (overheating the coil) or too low (letting the clutch slip and burn), it disengages the clutch until voltage is back to normal.
It also waits 15 seconds after ignition before engaging the clutch, so the starter motor doesn’t have to crank the compressor too.

Why the ACX-10
Quick Payback
Longer Life
Extends clutch, compressor and hose life.
Protects the Coil
Stops damage to the clutch coil and plates.
Easier Starts
Less load on the starter motor and batteries.
Easy to Fit
A few simple connections.
Literature & related
More Information
- Probe and A/C part lists
Liquid level probes, APAds and ACX-10 part numbers · PDF, 9.0 MB - Index product catalogue
Sensors, switches, probes and controls, with OEM cross-references · PDF, 9.0 MB
Not Sure Which One You Need?
Tell us about the job – the machine, the conditions and what it has to do – and we’ll help you choose the right Index Sensors & Controls product.