Yellow Phase Discs

Our Yellow Phase Discs provide a clear, long-lasting way to mark electrical installations, helping engineers, contractors, and maintenance teams identify wiring phases quickly and accurately. They are a staple in electrical work across construction sites, facilities management, and MRO operations.

We supply these discs on sheets, making them easy to store, organise, and carry between jobs. The sheet format allows for quick selection and application, keeping installation work efficient and tidy.

Made from self-adhesive vinyl with a permanent adhesive, these discs stick securely to clean, dry surfaces and stay in place even in demanding conditions. The bright yellow finish ensures high visibility, improving safety and reducing the risk of errors during wiring or maintenance.

Available sizes:

• 10mm diameter

• 15mm diameter

• 20mm diameter

Common uses include:

• Identifying electrical phases during installation

• Marking wiring in plant rooms or control panels

• Supporting colour-coded wiring standards

• Maintenance and safety labelling in industrial settings

We offer fast delivery and bulk order discounts so you can keep your electrical marking supplies ready for every project.