3M ScotchCode SDR Wire Marker Tape Refill Roll

3M SDR-MINUS Wire Marker Tape, Minus Symbol

The 3M SDR-MINUS wire marker tape is a minus (-) symbol marker from 3M's SDR wire marker tape lineup, purpose-built to help electricians and maintenance teams clearly label wires, cables, and terminal points that require a negative or minus designation. Supplied as an adhesive-based wire marker tape, the SDR-MINUS marker is designed for direct application to wires, cables, and conduit, giving installers a fast, legible way to identify polarity or negative connection points within a larger electrical identification system. As part of a coordinated labeling scheme, this marker supports the kind of clear, consistent wire identification that professional electrical work depends on for safety, traceability, and efficient troubleshooting.

Because it is printed specifically with the minus symbol, the SDR-MINUS tape is meant to be paired with the broader 3M SDR wire marker series, which includes numbers, letters, and additional symbols. This allows electricians to build out a complete, standardized wire and cable identification scheme across an entire panel, enclosure, or facility rather than relying on inconsistent or hand-written labels that can fade, smudge, or become illegible over time. Clear identification of minus/negative terminations is especially important in DC power systems, control wiring, and any application where reversed polarity could cause equipment damage or safety issues.

Key Features

• Minus Symbol Marker: Printed with the minus (-) symbol, allowing wires, cables, and terminals to be clearly and unmistakably marked wherever a negative or minus designation is required.
• Wire Marker Tape Format: Supplied as an adhesive-based marker tape intended for direct application to wires, cables, and conduit for quick, tool-free identification in the field.
• Part of the 3M SDR Wire Marker Line: Designed to complement the numbers, letters, and symbols in the SDR wire marker tape series, enabling installers to build complete, coordinated wire identification schemes.
• Supports Organized Wiring Systems: Helps maintain clear, traceable labeling across panels, junction boxes, terminal blocks, and wiring runs, reducing the chance of miswiring or confusion during service and maintenance.
• Consistent Labeling System: Works alongside the full range of 3M SDR wire markers to create clear, standardized wire and cable identification practices across an entire facility.
• 3M Manufacturing: Produced by 3M, a manufacturer widely relied upon across commercial and industrial electrical identification and labeling applications.

Technical Specifications

• Product Subgroup: Cable Management
• Refer to manufacturer documentation for complete specifications.

Typical Applications

• Wire and Cable Identification
• Electrical Panel and Switchgear Labeling
• Industrial Control Panel Wiring
• Circuit Tracing and Numbering Systems
• MRO and Electrical Maintenance Applications
• New Construction and Retrofit Wiring Projects

Why 3M?

3M has long been relied upon for electrical identification and labeling products used across commercial, industrial, and maintenance environments. The SDR-MINUS wire marker tape reflects 3M's continued focus on straightforward, easy-to-apply labeling solutions that help electricians and maintenance teams keep wiring systems organized, traceable, and easy to service. Choosing 3M wire marker tape helps support consistent labeling practices that make wire and cable identification simpler and more reliable on the job site, whether for new installations, retrofit projects, or ongoing electrical maintenance work.