Citizen Cooling Solutions Limited > Electrical Insulation Rubber Mat > HIGH VOLTAGE ELECTRICAL INSULATING MATTING ASTM D178 Class 4, Type I in East Africa.


  • Posted by: Citizen Cooling Solutions Limited

Citizen Cooling Solutions Limited is the leading direct importer and distributor of high-quality DURATUF INSULATING MATTING ASTM D178 Class 4, Type I in Nairobi Kenya. Our rolls come in the below specifications: 

Dimensions: 10Mx1M

Surface Design: TOP FINE RIBBED & BOTTOM TEXTURED ASTM D178 Class 4, Type I.

Get in touch with us to place an order through +254 724 381 416/ +254 724 381 421 or email us via


In industries where extreme electrical hazards are a constant concern, ensuring the safety of personnel and equipment is of paramount importance. Insulating mats serve as a critical line of defense, providing insulation against electric shocks and other related risks. Among the standards governing these mats, ASTM D178 sets rigorous criteria for quality and performance. In this article, we delve into the specifics of ASTM D178 Class 4, Type I insulating mats, highlighting their characteristics, applications, and crucial role in promoting safety in extreme electrical environments.

Understanding ASTM D178 Standards

ASTM D178 is a widely recognized standard that establishes specifications for rubber insulating mats used in electrical applications. This standard encompasses various classes and types of mats, each designed to meet specific voltage levels and performance requirements. Compliance with ASTM D178 ensures that insulating mats provide reliable protection against electrical hazards.

Class 4 and Type I Classification

Within the ASTM D178 standard, insulating mats are classified based on their maximum use voltage and intended applications. Class 4 mats have a maximum use voltage of 36,000 volts AC or 54,000 volts DC, making them suitable for use in extreme high-voltage environments. Type I classification further categorizes mats based on their thickness and mechanical properties, with Type I mats offering general-purpose insulation and mechanical protection.

Characteristics of ASTM D178 Class 4, Type I Insulating Mats

  1. Exceptional Dielectric Strength: Class 4, Type I mats exhibit exceptional dielectric strength, allowing them to withstand extremely high voltage levels without conducting electricity. This property is crucial for protecting workers in environments with extreme electrical hazards.
  2. Effective Insulation: These mats provide reliable insulation against electrical currents, significantly reducing the risk of electric shock hazards for personnel working near live electrical equipment.
  3. Mechanical Durability: Type I mats offer mechanical protection in addition to electrical insulation, making them suitable for areas where heavy machinery or equipment is in use.
  4. Robust Construction: ASTM D178 Class 4, Type I mats are constructed from robust rubber compounds that resist abrasion, tearing, and punctures, ensuring long-term performance in harsh conditions.
  5. Chemical and Weather Resistance: The materials used in these mats are resistant to chemicals, oils, and weather exposure, making them suitable for indoor and outdoor applications in extreme environments.

Applications of ASTM D178 Class 4, Type I Insulating Mats

  1. High-Voltage Power Plants: Class 4, Type I mats are commonly used in high-voltage power generation facilities, substations, and electrical distribution centers to protect workers during maintenance and repair activities.
  2. Heavy Engineering and Manufacturing: Industries with extreme high-voltage machinery, such as heavy engineering and manufacturing, utilize these mats to ensure the safety of operators and maintenance personnel.
  3. Utility and Infrastructure Maintenance: Utility companies and infrastructure maintenance teams use Class 4, Type I mats during electrical maintenance and repair operations in extreme high-voltage environments.
  4. Research and Testing Facilities: Laboratories and testing facilities where extreme high-voltage electrical experiments are conducted require these mats to protect personnel and equipment from electrical risks.
  5. Offshore and Marine Applications: Offshore platforms, marine vessels, and oil rigs employ Class 4, Type I mats to safeguard workers during electrical operations in challenging marine environments.

Significance of ASTM D178 Class 4, Type I Mats in Extreme Electrical Safety

The use of ASTM D178 Class 4, Type I insulating mats is instrumental in promoting safety in extreme high-voltage environments. Here are key reasons highlighting their significance:

  1. Extreme Voltage Protection: Class 4 mats provide robust insulation against extremely high-voltage electrical currents, offering critical protection to workers in extreme electrical environments.
  2. Compliance with Standards: Adhering to ASTM D178 standards ensures that mats meet stringent performance criteria, guaranteeing their effectiveness in preventing electrical accidents.
  3. Versatility: These mats are versatile and suitable for a wide range of extreme high-voltage applications, making them a practical choice for various industrial settings.
  4. Durable Performance: The robust construction of Class 4, Type I mats ensures long-lasting performance, reducing maintenance costs and downtime.
  5. Risk Mitigation: By reducing the risk of electric shocks and related injuries in extreme high-voltage environments, these mats contribute significantly to promoting a safer work environment.


ASTM D178 Class 4, Type I insulating mats are indispensable for protecting personnel and equipment in extreme high-voltage environments. Their exceptional dielectric strength, insulation properties, mechanical durability, and chemical resistance make them essential components of electrical safety protocols. Investing in quality Class 4, Type I mats demonstrates a commitment to safeguarding workers from extreme electrical hazards and ensuring compliance with industry standards. By incorporating these mats into safety strategies, organizations can create safer work environments and mitigate risks associated with extreme high-voltage operations.

Get in touch with us to place an order through +254 724 381 416/ +254 724 381 421 or email us via


Author: Citizen Cooling Solutions Limited
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