Thailand TISI Certified Power Cords: Complete Compliance Guide for Manufacturers and Importers

Thailand’s electrical safety regulations have become increasingly strict in recent years as the government continues to modernize safety standards and align with international requirements. For manufacturers, importers, and global brands selling electrical appliances in Thailand, TISI-certified power cords and plugs are mandatory. Without TISI approval, electrical products are prohibited from being sold, imported, or distributed in the Thai market.

This article provides a comprehensive overview of TISI-certified power cords, including certification requirements, testing items, plug standards, labeling rules, market applications, and what overseas factories need to prepare before exporting electrical cables to Thailand.

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1. What Is TISI Certification?

TISI stands for Thai Industrial Standards Institute, the government body responsible for establishing product standards and safety regulations in Thailand.
TISI certification ensures that electrical products—especially power cords and plugs—meet Thailand’s safety, quality, fire resistance, and electrical performance requirements.

For power cords, TISI is a mandatory approval (similar to:

• UL for the United States

• VDE for Germany

• PSE for Japan

• CCC for China)

Products without a valid TISI mark cannot be imported or sold in the Thai market.

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2. Power Cords That Require TISI Certification

Under the TISI Electrical Safety Regulations, the following categories require certification before entering Thailand:

1. AC Power Cords (Two-core and Three-core)

2. Molded Plug Power Cords

3. Extension Cords

4. Adapters and Power Strips

5. Appliance Power Supply Cables (PVC or Rubber)

Common TISI-certified power cords include:

• Two-pin Thai plug + 2×0.75mm² cable

• Three-pin grounded plug + 3×0.75mm² / 3×1.0mm² cable

• PVC insulated power cords for home appliances

• Rubber insulated cords for outdoor use

OEM and ODM customers often request complete plug + cable assembly to meet local regulations.

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3. Thailand Plug Standard: TIS 166-2549

Thailand uses plug standard TIS 166-2549, which is partially compatible with the U.S. NEMA standard but has its own safety structure.

Thai Plug Characteristics

• Flat two-pin or three-pin

• Voltage: 220V

• Frequency: 50Hz

• Rated current: 10A or 16A

• Plug pins must meet TISI dimensional rules

• Material requires sufficient heat resistance and insulation

Approved Cable Types

Common cable structures used with TISI plugs include:

• 60227 IEC 52 (H03VV-F)

• 60227 IEC 53 (H05VV-F)

• 60227 IEC 57 (H05V2V2-F)

Cables must use pure copper, meet thickness requirements, and comply with insulation standards.

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4. Key Testing Requirements for TISI Power Cords

To obtain TISI certification, power cords must pass a comprehensive series of electrical and safety tests:

Electrical Safety Tests

• Conductor resistance test

• Insulation resistance

• Voltage withstand test

• Grounding continuity

• Plug heat resistance test

• Stress relief test at connector ends

Mechanical & Durability Tests

• Plug insertion and withdrawal cycles

• Cable bending test

• Tensile strength test

• Plug pin strength test

Fire Resistance Tests

• Glow-wire test

• Vertical flame test

• Insulation non-flammability test

Material & Environmental Tests

• PVC insulation properties

• Rubber hardness test

• Temperature resistance (70°C / 105°C)

• Aging test

Passing these tests proves the power cord is safe for long-term household and commercial use.

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5. Mandatory Labeling Requirements

Power cords sold in Thailand must include:

• TISI logo

• Manufacturer or Importer ID number

• Rated voltage and current

• Cable type and conductor size

• Country of manufacture

• Safety warnings (when required)

Incorrect labeling may cause customs delays or product rejection.

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6. Advantages of TISI Certified Power Cords

For manufacturers and global brands, obtaining TISI certification provides several benefits:

1. Legal Market Entry

Only TISI-certified power cords are allowed into Thailand.

2. Higher Product Trust and Safety

Distributors and retailers prefer products with recognized safety marks.

3. Lower Trade Risks

TISI reduces the chance of product recalls, returns, or customs rejections.

4. Better Brand Reputation

Compliance with international safety standards enhances global credibility.

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7. Applications of TISI Certified Power Cords

TISI certified power cords are widely used in:

• Home appliances
  (air purifiers, fans, rice cookers, refrigerators, TVs, air fryers)

• Computers and office equipment
  (printers, monitors, UPS systems)

• LED lighting and drivers

• Tools and electrical devices

• Commercial appliances
  (hotel equipment, kitchen machines, beverage machines)

As Thailand’s electronics and home appliance market continues growing, demand for compliant power cords is increasing rapidly.

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8. What Manufacturers Must Prepare Before Applying for TISI

For overseas factories exporting to Thailand, preparation often includes:

1. Complete product drawings

2. Cable structure specifications

3. Conductor and insulation material data

4. Manufacturing process flow

5. Quality management records

6. Factory audit preparation

7. Samples for laboratory testing

8. Power cord assembly photos

Factories with UL, VDE, PSE, or CCC experience normally pass TISI more easily due to similar processes.

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9. Why Brands Choose Toong Yean for TISI Certified Power Cords

As a professional power cord manufacturer, Toong Yean Electrical Connection Co., Ltd. offers:

✔ Complete TISI certified plug + cable assemblies

Including Thai 2-pin and 3-pin molded power cords.

✔ OEM / ODM customization

Lengths, colors, molds, packaging.

✔ International manufacturing experience

UL, VDE, PSE, KC, SAA, CCC…
Comprehensive compliance expertise.

✔ Export capability to Thailand, Asia, North America, Europe

We understand customs, documentation, and shipment requirements.

✔ Strict quality control

Every power cord undergoes 100% electrical testing before shipment.

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10. Conclusion

TISI certified power cords are mandatory for all electrical products entering Thailand. With the Thai market’s increasing safety requirements, choosing a reliable factory with strong compliance capability is essential.

Manufacturers and importers who understand plug standards, testing requirements, labeling rules, and certification procedures will be able to enter the Thai market smoothly and avoid costly delays.

If you need TISI certified power cords, OEM solutions, or technical guidance, Toong Yean is ready to support you.