An ASTM D178 Class 0 insulation mat is an electrical safety rubber mat designed to protect workers from electric shocks in low-voltage environments. It meets the requirements set by the American Society for Testing and Materials (ASTM) under standard D178, the globally recognised benchmark for electrical insulating matting.
Class 0 is the entry-level class in the ASTM D178 range and is specifically designed for areas where the working voltage does not exceed 1,000 volts AC. Despite being the lowest class, it still provides reliable, tested, and certified protection for workers operating near live electrical equipment.
Key Technical Specifications of Class 0 Switchboard Mats
| ASTM Class | Class 0 |
| Max Use Voltage (AC) | 1.0 kV (1,000 V) |
| AC Proof Voltage | 5.0 kV (5,000 V) |
| Dielectric Withstand | 10.0 kV (10,000 V) |
| Recommended Thickness | 3.2 mm |
| Standard Roll Width | 1.0 m (customisable up to 1,220 mm) |
| Standard Roll Length | 10.0 m |
| Weight per Roll | Approx. 42 kg |
| Colour | Black (standard); other colours available on request |
| Anti-Skid Surface | Fine ribbed top, textured bottom |
| Material | Premium elastomer compound (rubber) |
| Type | Type I (standard) | Type II (ozone, flame, oil resistant) |
| Product Code (Type I) | IM-ASTM-C0T1-BLAFT-3.2MM |
| Product Code (Type II) | IM-ASTM-C0T2-BLAFT-3.2MM |
Where is an ASTM D178 Class 0 Mat Used?
Class 0 mats are ideal for low-voltage electrical environments. Typical applications include:
- Switchboard rooms and distribution boards operating at 230V–400V
- Residential and commercial electrical control panels
- Battery charging rooms and UPS rooms
- Data centres with low-voltage server infrastructure
- Electrical maintenance work near 415V machinery
- Industrial control panels and relay panels
- Railway signal rooms with low-voltage systems
If the maximum voltage at your worksite is 1 kV or below, the Class 0 mat is the right choice. Always choose the correct class because using an under-rated mat is a serious safety hazard.
Type I vs Type II: Which Should You Choose?
The ASTM D178 standard offers two mat types within each class:
- Type I: Provides electrical insulation and basic moisture resistance. Suitable for most indoor dry electrical environments.
- Type II (A/B/C): In addition to electrical insulation, provides resistance to ozone (IIA), flame (IIB), and oil/water (IIC). Ideal for environments with chemical exposure or fire risk.
Unless your workplace has exposure to ozone, chemicals or open flames, Type I is sufficient and more cost-effective. For oil refineries, chemical plants or outdoor-adjacent areas, use Type II.
Key Features & Benefits of ASTM Class 0 Mats
Here are some key features of ASTM D178 Class 0 electrical insulation mats:
- Tested in internationally accredited laboratories, every mat comes with a test certificate.
- Anti-slip ribbed surface prevents slips, trips and falls.
- Marked every meter with product name, class, voltage rating, and standard for easy compliance verification.
- Made from premium elastomer, which are durable, flexible, and long-lasting
- Minimum tensile strength of 4.83 MPa (700 psi) for mechanical toughness
- Minimum 250% elongation at break and will not crack or tear easily
- Certifications include ASTM, IEC, AIRIA, ISO 9001:2015, CE, RoHS, REACH, and ERDA
- Customizable in width (up to 1,220 mm) and length (up to 30 m)
How to Install Your Class 0 Insulation Mat
Installing an ASTM D178 Class 0 mat is simple and easy. Here are the step by step guide on how to install the class o mats:
Step 1: Clean the surface: Remove all dust, debris, oil, and moisture from the floor area.
Step 2: Position the mat: Lay the mat flat, covering the entire work area in front of electrical equipment.
Step 3: Secure placement: The mat is heavy and textured enough to stay in place without adhesive or tape.
Step 4: Inspect before use: Check for cuts, tears, contamination or edge damage before every use.
Note: Do not fold or overlap mats. Do not use it in areas exceeding the rated voltage.
How to Care for Your Class 0 Switchboard Mat
The longevity of a Class 0 mats can be increased through the effective uses of these mats. Here are some precaution to follow while using this class mats:
- Store flat or rolled; Never fold the mats and keep in a clean, cool, dry area away from sunlight and ozone sources.
- Clean with a damp cloth; avoid harsh chemicals or solvents.
- Inspect regularly; remove from service immediately if damaged.
- Keep away from sharp objects, steam pipes, and UV light sources.
- Re-test periodically according to ASTM D178 electrical test standards.
AmeriVolt ASTM D178 Class 0 Insulation Mats are trusted by power companies, construction contractors, data centers, and industrial facilities across 61+ countries. Contact us for specifications, bulk pricing, and customization options.
