Busbar Insulator  UL-Certified Resin Stand-Off Support for Electrical Panels & Switchgear

Product Overview

The Busbar Insulator (UL-Certified Resin Stand-Off Support) is a premium insulating component designed to support and isolate busbars inside electrical panels, switchgear, power distribution units, and control cabinets. This resin stand-off insulator ensures safe electrical insulation, mechanical stability, and proper clearance between conductive elements and grounded metal enclosures.

Made from UL-rated epoxy or composite resin, this insulator withstands high voltage, heat, and mechanical stress. Its stand-off design maintains a precise dielectric spacing, reducing risk of arcing, leakage, and short circuits. Whether for low-voltage distribution boards or medium-voltage switchgear, this insulator ensures your busbar runs safely and reliably under load.

Manufacturers commonly use resin stand-off insulators (e.g. SM series) for low voltage applications, with high tensile strength, heat resistance, and good insulating performance.  Epoxy resin standoff insulators are widely used to support busbars in panels and maintain insulation distances. 

Key Features

• UL-Certified Resin Material — Meets stringent safety and insulation standards.

• Stand-Off / Standoff Design — Holds busbars at proper distance from panel surfaces, preventing electrical faults.

• High Mechanical Strength — Supports heavy copper busbars under load.

• Excellent Dielectric Properties — Low dielectric loss, high breakdown voltage, stable insulation over time.

• Temperature & Flame Resistance — Operates under wide temperature ranges and resists flame or deformation.

• Corrosion Resistant — Resin body prevents corrosion & oxidation.

• Precision Dimensions & Tolerances — Accurate sizes, threaded inserts for mounting.

• Standard Threaded Mounting Inserts — Brass, copper, or steel inserts (e.g. M6, M8) for secure fastening.

• Wide Application Use — Suitable for switchgear, control panels, electrical distribution systems.

• Compact & Clean Design — Small footprint, smooth surfaces, suitable for tight panel layouts.

Technical Specifications

Benefits & Use Cases

• Safe Busbar Isolation — Prevents electrical leakage and short circuits by maintaining safe spacing.

• Mechanical Support — Carries weight of busbars in dynamic or vibration-prone environments.

• Longevity & Stability — Resin material resists aging, moisture, and temperature fluctuations.

• Space Efficiency — Compact design lets panels remain space-optimized.

• Versatile Installation — Works for both new builds and retrofit of switchgear.

• Reduced Maintenance — Less chance of insulation breakdown, reducing downtime.

• Industry Compliance — UL certification adds trust and meets electrical safety standards.

• Scalable & Modular — Multiple insulators can be installed in series or arrays to support multiple busbars.