Product overview
3M 77 (7100004537, 7100004701) is a professional-grade Fire-Retardant Arc Proofing Tape. It’s designed to protect electrical cables from fire and arc hazards in demanding industrial environments. Made from a highly flexible intumescent elastomer, 3M Tape 77 expands under extreme heat. This forms a thick, insulating char barrier between adjacent cables and surrounding flames. This Scotch Tape 77 offers arc-proofing performance up to 600V and can be applied with ease across a wide range of cable types, especially in confined or irregular spaces.
Part Numbers: 7100004537, 7100004701.
3M Scotch Fire-Retardant Electric Arc Proofing Tape 77
Engineered for electrical maintenance, construction, utility, and renewable sectors, Scotch 77 provides an essential layer of passive fire protection for vulnerable cable installations. Its conformable, non-adhesive design ensures fast, wrinkle-free wrapping without the need for additional tools or adhesives. Once exposed to fire, this Fire-Retardant Arc Proofing Tape self-extinguishes and forms a tough char, shielding cables and extending critical system uptime. Whether you’re safeguarding against arc propagation or protecting bundled circuits in tight enclosures, 3M 77 delivers proven, fire-rated performance in high-risk environments.
Key Features & Benefits
- Fire-retardant tape expands to form a protective char in arc or flame exposure
- Conformable elastomer backing wraps neatly around irregular shapes
- Helps protect adjacent cables from flame and arc failures
- UL Listed and RoHS 2011/65/EU compliant
- Self-extinguishing, arc-proofing performance up to 600V
- Flexible and removable for easy cable inspection
- Dielectric strength: 19.7 kV/mm
- Professional-grade 30 mil (0.76 mm) thick intumescent construction
- Available in 38.1 mm (1.5 in) and 76.2 mm (3 in) widths, 6 m (20 ft) roll
- Ideal for construction, utilities, industrial maintenance, and renewable energy
- Suitable for use in wind farms, substations, solar arrays, and mining operations
3M Scotch 77 – Passive Fire Protection for Critical Cables
From commercial construction to high-voltage industrial sites, 3M 77 offers reliable arc proofing and flame resistance exactly where it matters. By expanding into a dense thermal barrier on exposure, this 3M Duct Tape 77 prevents cascading faults across cable networks, protecting both equipment and personnel. Whether you’re retrofitting arc containment in a utility cabinet or reinforcing cable trays in mining operations, Tape 77 ensures fast, efficient installation without compromising on safety or durability.
When passive fire protection is non-negotiable, choose this product for peace of mind in high-risk zones.
For Additional Information on 3M Scotch Fire-Retardant Electric Arc Proofing Tape 77 (7100004537, 7100004701), please consult the Technical Data Table or PDF File below.
*Technical Data subject to change without notice.
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