Mar-Bal Standoff Insulators

mar-bal standoff insulators

All Mar-Bal Standoff Insulators are molded from a flame retardant and track resistant glass reinforced thermoset polyester molding compound recognized for current carrying devices under UL Material Recognition Number E 80533 (N). They combine high mechanical strength with high arc resistance and dielectric properties at elevated temperatures and humidity. These shatter resistant insulators meet the most exacting standards for a variety of applications.

Product Overview
Panel and Switchboard
Round 600-Volt
Round 4000 Series
Octagon Center Post 4000 Series
Octagon Center Post 5000 Series
5 kV Insulators

13.5 kV Insulators
15 kV Insulators


The Mar-Bal 5kV, 13.5kV and 15kV have been tested to BIL and Power Frequency Withstand tests, see the Certificate of Compliance:

BIL and Power Frequency Withstand Voltage Certificate of Compliance



 View Cross Reference List of Insulators

UL Certification Listings

Standoff Insulators UL Certification E84767
Standoff Insulators UL Certification Canada E84767

UL Certificate of Compliance Standoff Insulators E84767-19821101

Stocking Distributors – North America

Standoff Insulators Stocking Distributors for North America

Contact Information for Asia Pacific (China, India, Vietnam, Korea, Japan, etc …)

Asia Pacific Standoff Insulator Contact Information

+ Metric Insulators available upon request

+ All Insulators Listed Can Also Be Molded Using MAR-BAL High Track Resistant-Supertrack MB4000 Compound

Customer Service Contact, North America:

Michelle Melton
PH: (540) 674-5320



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