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Electrical Contact Cleaning

Electrical Contact Cleaning
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Electrical Contact Cleaning

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A high purity, electronic contact cleaner will remove environmental contaminants and protect contacts from corrosion and frictional wear.  Contact cleaners restore electrical continuity to all electronic and electrical contacts by penetrating and removing insulating oil and grease, conductive carbon soil, and insulative oxides from contact surfaces. By restoring full circuit continuity, Chemtronics contact cleaners improve the performance of all equipment that relies on electrical contacts.  Aerosols can be sprayed in any direction, even upside down. Look for the “All-Way Spray” icon on the can. Recommended for every phase of electronics and electrical contact maintenance including:

  • Metal contacts 
  • Plastic-embedded contacts 
  • Potentiometers
  • Relays and switches
  • Circuit breakers 
  • Fuse blocks 
  • Electronic controls 
  • Electrical panels 
  • Motors and armatures 
  • Plugs and sockets 
  • Solenoids

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Dielectric Breakdown

Plastic Sensitivity(Choose One)


Environmental - Safety

Pow-R-Wash PR
Extra strength contact cleaner that is safe on some plastics.

Pow-R-Wash VZ
A general purpose, nonflammable electronic contact cleaner that is safe for use on some plastics.

Tun-O-Wash Cleaner
Universal fast drying cleaner for electro-mechanical and electronic tuners


Can you spray contact cleaner on a circuit board?

Most contact cleaners are safe to use on printed circuit boards (PCBs) in electronic devices. Make sure the contact cleaner solvent is compatible with all components, connectors, and packaging by testing on a scrap part or inconspicuous area.

How do you clean dirty electrical contacts?

Hold object to be cleaned in vertical position so the solvent and soil can run off. Spray 4 - 6 inches (10-15 cm) from surface. Wash from top to bottom, allowing the liquid to flush away contaminants. For precision application, use with extension tube. Allow solvent to fully evaporate and dry before turning on the power to the device.

How do you clean corroded contacts?

To improve the connection quality of an electrical contact or switch, you can remove oxidation or rust either mechanically and/or chemically. A brass or steel brush is the most common method of scrubbing off oxidation, although for sensitive contacts nylon is also used. With this method, take care to avoid damaging contacts and other components. It can be difficult to directly clean all the tight areas of electrical connectors and switches, so you may need to use some kind of chemical method. On the mild side, a mild acid like vinegar can be used, and other agents are offered for battery terminal cleaning, such as baking soda. Regardless of the cleaning material, care should be taken to rinse it off. A cleaner strong enough to remove rust could continue to work on unintended metal surfaces.

What is contact cleaner used for?

A contact cleaner (also called electrical cleaner, switch cleaner, electrical contact cleaner, and specific for automotive repair, battery terminal cleaner) is a solvent cleaner designed to remove contamination from electrical contacts, the conductive surfaces of connectors, switches and other electrical and electronic components with moving surface contacts. The goal is to quickly remove insulative contamination as quickly as possible, avoiding a lot of wiping and scrubbing if possible. Contact cleaning solvents are usually come in pressurized aerosol packaging for convenience and to provide a forceful spray that creates agitation and reaches into all the crevices of the connectors.

Is lubricant like WD-40 a good contact cleaner?

Generally, contact cleaners contain 100% solvent, which dissolves grease, carbon deposits, and other contamination, and allows it to run off. The solvent then evaporates, leaving a clean, conductive surface behind. Aerosol lubricants, like WD-40, have some cleaning ability, since the oil in the can has to be dissolved in a solvent. In this case, the solvent dissolves the contamination and a light oil is left behind. This oil can provide lubrication, allowing a connector to be inserted easily. It can also provide some hydrophobicity, preventing moisture from collecting in the connector and either causing a short circuit or corrosion. Chemtronics offers DPL (Deep Penetrating Lubricant) and CircuitWorks Gold Guard Pen for this type of application. One problem with adding oil to a connector is it can collect dust and other contamination from the air around it.


n-Propyl Bromide (nPB) Determined Unacceptable Risk by EPA for Vapor Degreasing & Aerosols

The US Environmental Protection Agency (EPA) has determined that n-propyl bromide (aka. nPB, 1-Bromopropane, 1-BP, CAS 106-94-5) “presents an unreasonable risk for 16 conditions of use” in an August, 2020 report. “Nontechnical Summary of the Risk Evaluation for 1-Bromopropane (n-Pr...
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