380 440V MDB Electrical Insulating Mats | IEC 61111 Class 0
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How to Choose an Electrical Insulating Mat for 380–440V MDB Panels in Accordance with IEC 61111:2009
The areas in front of Main Distribution Boards (MDBs), switchgear, control panels and electrical control cabinets operating at 380–440V are critical work zones. Damaged insulation, leakage current, equipment faults or accidental contact with energized components can expose personnel to serious electric shock hazards.
Installing a certified electrical insulating rubber mat provides a supplementary insulating barrier between the operator and the grounded floor. This helps reduce the risk of electrical current passing through the body to ground.
However, not every rubber mat provides electrical insulation. Buyers must verify the applicable IEC Class, voltage rating, product marking, supporting test documents and installation conditions before making a purchase.
This guide explains how to select the correct electrical insulating mat for 380–440V MDB panels and compares all five ElectroMer® Class 0 models.
Important: An electrical insulating mat is a supplementary protective measure. It does not replace electrical isolation, lockout/tagout procedures, appropriate PPE, grounding, arc-flash controls or safe electrical work practices.
Why Do 380–440V Electrical Panels Require IEC 61111:2009 Insulating Mats?
Electrical insulating mats intended for use in front of electrical equipment should be tested and classified according to an appropriate international standard. IEC 61111:2009 specifies requirements for elastomeric insulating matting used as floor covering to provide electrical protection for workers operating or maintaining electrical installations. The standard classifies insulating mats from Class 0 to Class 4, based on their maximum permitted use voltage. For typical three-phase electrical systems operating at 380–440V, Class 0 is generally appropriate when the maximum use voltage in the work area does not exceed 1,000V AC.
For the ElectroMer® Class 0 specification described in this article:
IEC Classification: Class 0
Maximum Use Voltage: 1,000V AC
Withstand Test Voltage: 10,000V
Typical Application: 380–440V MDBs, switchgear and control panels
IEC Classification: Class 0
Maximum Use Voltage: 1,000V AC
Withstand Test Voltage: 10,000V
Typical Application: 380–440V MDBs, switchgear and control panels
The 10,000V value is a dielectric withstand test level. It must not be interpreted as the permitted operating voltage. The maximum use voltage for Class 0 remains 1,000V AC. Final Class selection should be based on the maximum possible system voltage, equipment configuration, working method, site risk assessment and applicable safety requirements—not nominal voltage alone.
What Should You Check Before Buying an Electrical Insulating Mat?
1. IEC Class
Verify that the Class covers the maximum voltage at which the mat will be used.For a typical 380–440V electrical system, Class 0 is normally selected because it is rated for a maximum use voltage of 1,000V AC. Do not select the mat based only on thickness. Two mats with the same thickness may have completely different electrical classifications.
Verify that the Class covers the maximum voltage at which the mat will be used.For a typical 380–440V electrical system, Class 0 is normally selected because it is rated for a maximum use voltage of 1,000V AC. Do not select the mat based only on thickness. Two mats with the same thickness may have completely different electrical classifications.
2. Mat Thickness
The thickness must correspond to the certified Class and the exact product model. A thicker rubber mat is not automatically a better electrical insulator. The certified electrical Class and test results are more important than thickness alone.
3. Class Identification and Colour Coding
Check whether the mat or its identification label clearly shows its electrical Class. Where Class colour identification is provided, it helps safety personnel, engineers and auditors identify the voltage rating more efficiently.
Check whether the mat or its identification label clearly shows its electrical Class. Where Class colour identification is provided, it helps safety personnel, engineers and auditors identify the voltage rating more efficiently.
4. Surface Profile
Choose a surface that matches the work environment:
Smooth surface for general electrical rooms
Patterned surface for enhanced traction
Fabric-textured surface for areas where both electrical insulation and slip resistance are required
Surface selection should also consider floor condition, oil contamination, moisture and cleaning requirements.
Choose a surface that matches the work environment:
Smooth surface for general electrical rooms
Patterned surface for enhanced traction
Fabric-textured surface for areas where both electrical insulation and slip resistance are required
Surface selection should also consider floor condition, oil contamination, moisture and cleaning requirements.
5. Product Marking
The mat should carry clear and traceable identification, including applicable information such as:
Manufacturer or brand
Product model
IEC standard
Electrical Class
Maximum use voltage
Thickness
Batch or production reference
Relevant certification marking
The mat should carry clear and traceable identification, including applicable information such as:
Manufacturer or brand
Product model
IEC standard
Electrical Class
Maximum use voltage
Thickness
Batch or production reference
Relevant certification marking
A mat that has no Class marking or traceable product information should not be accepted solely because it looks thick or resembles an insulating mat.
6. COA, Certificate and Test Report
These documents do not necessarily serve the same purpose.
A Certificate of Analysis (COA) generally confirms the specification or inspection results of the delivered batch.
A Certificate of Conformity may confirm compliance with a stated product standard.
A Test Report presents the actual test methods, test conditions and measured results.
A Product Manual explains correct use, storage, inspection and maintenance.
These documents do not necessarily serve the same purpose.
A Certificate of Analysis (COA) generally confirms the specification or inspection results of the delivered batch.
A Certificate of Conformity may confirm compliance with a stated product standard.
A Test Report presents the actual test methods, test conditions and measured results.
A Product Manual explains correct use, storage, inspection and maintenance.
Request documents that match the exact model, Class, thickness and batch being delivered. A generic catalogue or an unrelated test report is not sufficient proof of product compliance.
7. Cut-to-Size and Installation Services
The mat should fit the actual work area without leaving unnecessary gaps, unstable overlaps or raised edges that could create trip hazards.
Professional cutting and installation can help ensure:
Correct coverage in front of the electrical panel
Clean and accurate edges
Proper alignment
Reduced movement during use
Better access to cabinets and walkways
Clear responsibility for installation quality
The mat should fit the actual work area without leaving unnecessary gaps, unstable overlaps or raised edges that could create trip hazards.
Professional cutting and installation can help ensure:
Correct coverage in front of the electrical panel
Clean and accurate edges
Proper alignment
Reduced movement during use
Better access to cabinets and walkways
Clear responsibility for installation quality
8. Product and Installation Warranty
Review the warranty period and conditions before ordering.
Product warranty and installation warranty should be stated separately because they cover different risks.
Review the warranty period and conditions before ordering.
Product warranty and installation warranty should be stated separately because they cover different risks.
Five ElectroMer® Class 0 Electrical Insulating Mat Models
ElectroMer®, a brand of Polytech Industry Co., Ltd. (PTI), offers five electrical insulating mat models for 380–440V MDB panels, switchgear, control panels and industrial electrical rooms.
All five models are available in IEC 61111:2009 Class 0, with a maximum use voltage of 1,000V AC. Each model is designed for a different combination of operating conditions, durability, surface traction, appearance and flame-performance requirements.
1. ElectroMer® STANDARD Model
The STANDARD Model is an entry-level electrical insulating mat for general factories, electrical rooms and control areas.
Its smooth black surface is suitable for standard indoor applications where additional flame-performance or anti-slip properties are not required.
The STANDARD Model is an entry-level electrical insulating mat for general factories, electrical rooms and control areas.
Its smooth black surface is suitable for standard indoor applications where additional flame-performance or anti-slip properties are not required.
Technical specification
Standard: IEC 61111:2009
Classification: Class 0
Maximum Use Voltage: 1,000V AC
Thickness: 2mm
Width: 1 metre
Roll Length: 10 metres
Surface: Smooth
Colour: Black
Estimated Service Life: 3–5 years
Product Warranty: 12 months
Standard: IEC 61111:2009
Classification: Class 0
Maximum Use Voltage: 1,000V AC
Thickness: 2mm
Width: 1 metre
Roll Length: 10 metres
Surface: Smooth
Colour: Black
Estimated Service Life: 3–5 years
Product Warranty: 12 months
Recommended for
General electrical rooms
Standard MDB work areas
Control panel areas
Projects requiring a cost-effective Class 0 solution
General electrical rooms
Standard MDB work areas
Control panel areas
Projects requiring a cost-effective Class 0 solution
2. ElectroMer® PATTERNED Model
The PATTERNED Model is designed for work areas requiring enhanced surface traction.
It is available in four surface patterns:
Coin
Diamond
Checkered
Fine-Ribbed
The PATTERNED Model is designed for work areas requiring enhanced surface traction.
It is available in four surface patterns:
Coin
Diamond
Checkered
Fine-Ribbed
The textured surface improves grip underfoot, while the fabric-impression backing helps the mat grip the installed floor.
Technical specification
Standard: IEC 61111:2009
Classification: Class 0
Maximum Use Voltage: 1,000V AC
Thickness: 3mm
Width: 1 metre
Roll Length: 10 metres
Surface: Coin, Diamond, Checkered or Fine-Ribbed
Estimated Service Life: 3–5 years
Product Warranty: 12 months
Standard: IEC 61111:2009
Classification: Class 0
Maximum Use Voltage: 1,000V AC
Thickness: 3mm
Width: 1 metre
Roll Length: 10 metres
Surface: Coin, Diamond, Checkered or Fine-Ribbed
Estimated Service Life: 3–5 years
Product Warranty: 12 months
Recommended for
Walkways in front of electrical cabinets
Areas with a higher slip risk
Marine electrical rooms
Control rooms requiring a visibly textured surface
Walkways in front of electrical cabinets
Areas with a higher slip risk
Marine electrical rooms
Control rooms requiring a visibly textured surface
3. ElectroMer® PREMIUM Model
The PREMIUM Model uses an upgraded compound designed for longer service life, lower weight and a more refined appearance than the STANDARD Model. Multiple colour options make it suitable for factories that use colour zoning to separate work areas, equipment groups or safety zones.
The PREMIUM Model uses an upgraded compound designed for longer service life, lower weight and a more refined appearance than the STANDARD Model. Multiple colour options make it suitable for factories that use colour zoning to separate work areas, equipment groups or safety zones.
Available colours include:
Black
Grey
Persian Green
Apple Green
Black
Grey
Persian Green
Apple Green
Colour availability should be confirmed before ordering.
The PREMIUM Model is also compliant with RoHS 2 requirements.
The PREMIUM Model is also compliant with RoHS 2 requirements.
Technical specification
Standard: IEC 61111:2009
Classification: Class 0
Maximum Use Voltage: 1,000V AC
Thickness: 2mm
Width: 1 metre
Roll Length: 10 metres
Surface: Smooth
Compliance: RoHS 2
Estimated Service Life: 5–7 years
Product Warranty: 18 months
Standard: IEC 61111:2009
Classification: Class 0
Maximum Use Voltage: 1,000V AC
Thickness: 2mm
Width: 1 metre
Roll Length: 10 metres
Surface: Smooth
Compliance: RoHS 2
Estimated Service Life: 5–7 years
Product Warranty: 18 months
Recommended for
Electrical rooms requiring longer service life
Projects using colour-coded work zones
Modern factories and data facilities
Areas where appearance and durability are both important
Electrical rooms requiring longer service life
Projects using colour-coded work zones
Modern factories and data facilities
Areas where appearance and durability are both important
4. ElectroMer® PREMIUM UL Model
The PREMIUM UL Model is ElectroMer®’s flagship electrical insulating mat for areas requiring additional flame-performance characteristics. In addition to IEC 61111:2009 Class 0, it is designed to meet the UL 94 V-0 flame classification and RoHS 2 requirements. The material is also designed for resistance to oil, chemicals and moisture, making it suitable for more demanding industrial environments.
The PREMIUM UL Model is ElectroMer®’s flagship electrical insulating mat for areas requiring additional flame-performance characteristics. In addition to IEC 61111:2009 Class 0, it is designed to meet the UL 94 V-0 flame classification and RoHS 2 requirements. The material is also designed for resistance to oil, chemicals and moisture, making it suitable for more demanding industrial environments.
Technical specification
Standard: IEC 61111:2009
Classification: Class 0
Maximum Use Voltage: 1,000V AC
Thickness: 2mm
Width: 1 metre
Roll Length: 10 metres
Surface: Smooth
Flame Classification: UL 94 V-0
Compliance: RoHS 2
Estimated Service Life: 7–10 years
Product Warranty: 24 months
Standard: IEC 61111:2009
Classification: Class 0
Maximum Use Voltage: 1,000V AC
Thickness: 2mm
Width: 1 metre
Roll Length: 10 metres
Surface: Smooth
Flame Classification: UL 94 V-0
Compliance: RoHS 2
Estimated Service Life: 7–10 years
Product Warranty: 24 months
Recommended for
Transformer rooms
Battery rooms
Industrial electrical rooms
Facilities with additional flame-performance requirements
Areas exposed to oil, chemicals or moisture
Transformer rooms
Battery rooms
Industrial electrical rooms
Facilities with additional flame-performance requirements
Areas exposed to oil, chemicals or moisture
UL 94 V-0 is a material flammability classification under specified test conditions. It should not be interpreted as making the entire room, installation or electrical system fireproof.
5. ElectroMer® AIRTEX Model
The AIRTEX Model combines electrical insulation, enhanced surface grip and flame-performance properties.
The AIRTEX Model combines electrical insulation, enhanced surface grip and flame-performance properties.
Its fabric-textured surface provides better traction than a smooth mat, while its material formulation is designed to meet UL 94 V-0 and RoHS 2 requirements. It is also designed for resistance to oil and chemicals.
Technical specification
Standard: IEC 61111:2009
Classification: Class 0
Maximum Use Voltage: 1,000V AC
Thickness: 2mm
Width: 1 metre
Roll Length: 10 metres
Surface: Fabric-textured
Flame Classification: UL 94 V-0
Compliance: RoHS 2
Estimated Service Life: 7–10 years
Product Warranty: 24 months
Standard: IEC 61111:2009
Classification: Class 0
Maximum Use Voltage: 1,000V AC
Thickness: 2mm
Width: 1 metre
Roll Length: 10 metres
Surface: Fabric-textured
Flame Classification: UL 94 V-0
Compliance: RoHS 2
Estimated Service Life: 7–10 years
Product Warranty: 24 months
Recommended for
Electrical rooms requiring enhanced traction
Areas where both slip resistance and flame performance are required
Industrial areas exposed to oil or chemicals
High-specification electrical installation projects
Electrical rooms requiring enhanced traction
Areas where both slip resistance and flame performance are required
Industrial areas exposed to oil or chemicals
High-specification electrical installation projects
Comparison of Five ElectroMer® Class 0 Models
| Model | Main Advantage | Thickness | Surface | Supporting Documents | Estimated Service Life | Warranty |
| STANDARD | Cost-effective solution for general use | 2 mm | Smooth | COA, Certificate/Test Report, Product Manual | 3–5 years | 12 months |
| PATTERNED | Enhanced traction with four pattern options | 3 mm | Coin, Diamond, Checkered or Fine-Ribbed | COA, Certificate/Test Report, Product Manual | 3–5 years | 12 months |
| PREMIUM | Longer service life, multiple colours and RoHS 2 compliance | 2 mm | Smooth | COA, Certificate/Test Report, Product Manual, RoHS 2 documents | 5–7 years | 18 months |
| PREMIUM UL | UL 94 V-0 flame classification for demanding environments | 2 mm | Smooth | COA, Certificate/Test Report, Product Manual, RoHS 2 and UL 94 V-0 documents | 7–10 years | 24 months |
| AIRTEX | Fabric-textured surface with UL 94 V-0 flame classification | 2 mm | Fabric-textured | COA, Certificate/Test Report, Product Manual, RoHS 2 and UL 94 V-0 documents | 7–10 years | 24 months |
Estimated service life depends on operating conditions, exposure, traffic, cleaning chemicals, storage, installation quality, inspection frequency and maintenance. Warranty coverage is subject to the applicable terms and conditions.
Which ElectroMer® Model Should You Choose for a 380–440V MDB Panel?
For a typical 380–440V electrical system, select an ElectroMer® Class 0 mat only after confirming that the maximum use voltage does not exceed 1,000V AC.
For a typical 380–440V electrical system, select an ElectroMer® Class 0 mat only after confirming that the maximum use voltage does not exceed 1,000V AC.
Then choose the model according to the work environment.
Choose STANDARD when:
The area is a general indoor electrical room
A smooth black surface is acceptable
No additional flame or anti-slip performance is required
Initial budget is a key consideration
The area is a general indoor electrical room
A smooth black surface is acceptable
No additional flame or anti-slip performance is required
Initial budget is a key consideration
Choose PATTERNED when:
The floor has a higher slip risk
Operators frequently walk along the electrical panel
A clearly textured surface is preferred
The area is located in a marine or industrial environment
The floor has a higher slip risk
Operators frequently walk along the electrical panel
A clearly textured surface is preferred
The area is located in a marine or industrial environment
Choose PREMIUM when:
Longer service life is required
The project uses colour zoning
Appearance is important
RoHS 2 compliance is required
Longer service life is required
The project uses colour zoning
Appearance is important
RoHS 2 compliance is required
Choose PREMIUM UL when:
The area has additional flame-performance requirements
The mat may be exposed to oil, chemicals or moisture
The project requires UL 94 V-0 supporting documentation
Longer service life and warranty are required
The area has additional flame-performance requirements
The mat may be exposed to oil, chemicals or moisture
The project requires UL 94 V-0 supporting documentation
Longer service life and warranty are required
Choose AIRTEX when:
Both flame performance and enhanced traction are required
A fabric-textured surface is preferred
The environment may involve oil or chemical exposure
The project requires a high-specification Class 0 solution
Both flame performance and enhanced traction are required
A fabric-textured surface is preferred
The environment may involve oil or chemical exposure
The project requires a high-specification Class 0 solution
Do not assume that every Class 0 mat is identical. The electrical Class confirms the voltage category, but surface design, flame performance, environmental resistance, durability, documentation and warranty can still differ significantly.
What Documents Should You Request from the Supplier?
Buying an electrical insulating mat is not simply a matter of choosing a colour or thickness. The supplier should be able to demonstrate that the delivered product matches the stated specification.
Certificate of Analysis
The COA should identify the delivered product or batch and confirm relevant specification details.
Depending on the agreed inspection scope, it may include:
Model
Batch or production number
Thickness
Dimensions
Physical properties
Electrical classification
Inspection results
The COA should identify the delivered product or batch and confirm relevant specification details.
Depending on the agreed inspection scope, it may include:
Model
Batch or production number
Thickness
Dimensions
Physical properties
Electrical classification
Inspection results
Certificate or Test Report
The certificate or test report should clearly identify:
Product model
IEC Class
Mat thickness
Applicable standard
Maximum use voltage
Relevant electrical test values
Test method
Test date
Testing organisation
Traceability to the tested sample
The certificate or test report should clearly identify:
Product model
IEC Class
Mat thickness
Applicable standard
Maximum use voltage
Relevant electrical test values
Test method
Test date
Testing organisation
Traceability to the tested sample
Confirm that the document applies to the product being purchased. A test report for a different model, thickness, compound or Class should not automatically be treated as evidence for the delivered mat.
Instruction Manual
The instruction manual should explain:
Correct use
Storage requirements
Cleaning methods
Visual inspection
Conditions requiring removal from service
Handling precautions
Maintenance recommendations
The instruction manual should explain:
Correct use
Storage requirements
Cleaning methods
Visual inspection
Conditions requiring removal from service
Handling precautions
Maintenance recommendations
Correct storage and inspection are essential because cuts, cracks, punctures, contamination, permanent deformation and ageing may reduce the mat’s protective performance.
Product Warranty
The warranty document should state:
Warranty period
Scope of coverage
Exclusions
Claim procedure
Required inspection or maintenance conditions
The warranty document should state:
Warranty period
Scope of coverage
Exclusions
Claim procedure
Required inspection or maintenance conditions
Installation Warranty
Where installation is included, request a separate installation warranty specifying:
Installation scope
Workmanship coverage
Warranty period
Conditions that invalidate coverage
Responsibility for floor preparation and site access
Where installation is included, request a separate installation warranty specifying:
Installation scope
Workmanship coverage
Warranty period
Conditions that invalidate coverage
Responsibility for floor preparation and site access
Why Sales Engineer Consultation Matters
A reliable supplier should do more than quote the product requested by the buyer.
A Sales Engineer should review information such as:
Nominal system voltage
Maximum possible voltage
Panel type
Work area dimensions
Indoor or outdoor location
Floor condition
Oil, chemical or moisture exposure
Slip risk
Flame-performance requirements
Cleaning process
Documentation requirements
Applicable site safety rules
A reliable supplier should do more than quote the product requested by the buyer.
A Sales Engineer should review information such as:
Nominal system voltage
Maximum possible voltage
Panel type
Work area dimensions
Indoor or outdoor location
Floor condition
Oil, chemical or moisture exposure
Slip risk
Flame-performance requirements
Cleaning process
Documentation requirements
Applicable site safety rules
This reduces the risk of purchasing a mat that fits the area physically but does not match the actual operating conditions.
Cut-to-Size and Professional Installation Services
Correct installation helps ensure that the insulating mat covers the intended standing and working area without creating new safety hazards. ElectroMer® provides cut-to-size and installation services based on actual site dimensions.
Correct installation helps ensure that the insulating mat covers the intended standing and working area without creating new safety hazards. ElectroMer® provides cut-to-size and installation services based on actual site dimensions.
The service can include:
Site assessment
IEC Class verification
Model selection
Measurement
Cut-to-size preparation
Layout planning
On-site installation
Supporting documentation
Installation warranty
Site assessment
IEC Class verification
Model selection
Measurement
Cut-to-size preparation
Layout planning
On-site installation
Supporting documentation
Installation warranty
Professional installation is particularly valuable for long switchgear line-ups, corners, columns, raised floors, uneven panel layouts and areas requiring precise access clearance.
ElectroMer®: Complete Electrical Insulating Mat Solutions for Industry
ElectroMer® offers five electrical insulating mat models in one product range:
STANDARD • PATTERNED • PREMIUM • PREMIUM UL • AIRTEX
ElectroMer® offers five electrical insulating mat models in one product range:
STANDARD • PATTERNED • PREMIUM • PREMIUM UL • AIRTEX
The range covers applications from general electrical rooms and slip-risk areas to projects requiring colour zoning, longer service life or UL 94 V-0 flame-performance documentation.
Supporting documents are available according to the selected model and order requirements, including:
COA
Certificate
Test Report
Product Manual
RoHS 2 documentation
UL 94 V-0 documentation
Supporting documents are available according to the selected model and order requirements, including:
COA
Certificate
Test Report
Product Manual
RoHS 2 documentation
UL 94 V-0 documentation
ElectroMer® provides more than product supply. Our Sales Engineer team supports every stage of the project:
Select the correct IEC Class
Match the product model to the work environment
Cut the mat to actual dimensions
Install the mat on site
Provide supporting documentation
Provide product and installation warranty according to applicable terms
Match the product model to the work environment
Cut the mat to actual dimensions
Install the mat on site
Provide supporting documentation
Provide product and installation warranty according to applicable terms
Safety in front of an electrical panel should never begin with a rubber mat that merely looks similar.
It should begin with:
The correct Class.
Traceable documentation.
Proper installation.
Regular inspection.
It should begin with:
The correct Class.
Traceable documentation.
Proper installation.
Regular inspection.
Choose Correctly from the Beginning
Consult the ElectroMer® Sales Engineer team to select and install the appropriate electrical insulating mat for your system voltage, panel configuration and site conditions.
Our solutions are designed to support safer electrical work practices and compliance with applicable workplace electrical safety requirements.
ElectroMer® provides domestic and international delivery.
Free delivery within Thailand is available subject to company terms and conditions.
Free delivery within Thailand is available subject to company terms and conditions.
LINE: @ptirubber
Email: info@ptigroups.com
Tel: +66 2 257 7154
Mobile: +66 98 289 8676
Email: info@ptigroups.com
Tel: +66 2 257 7154
Mobile: +66 98 289 8676
ElectroMer® by Polytech Industry Co., Ltd.
RIGHT CLASS. RIGHT PROTECTION.
RIGHT CLASS. RIGHT PROTECTION.
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