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What is UL 60335-2-148 ?

Title: Understanding UL 60335-2-148: The Safety Standard for Portable Transformers and Similar Products

Portable transformers and other similar products are essential for powering a wide range of devices in our daily lives. However, these products can pose potential hazards if not designed, manufactured, and maintained properly. The safety standard for these products is UL 60335-2-148, which is a set of guidelines and requirements established by Underwriters Laboratories (UL) to ensure the safety of consumers.

What is UL 60335-2-145?

UL 60335-2-145 is a safety standard specifically designed for portable transformers and similar products intended for household use. It covers the safety requirements for these products, including the prevention of potential hazards such as electric shock, fire, or mechanical injuries. To comply with this standard, manufacturers must design and produce their products in a way that minimizes the risks associated with electrical components, wiring, insulation, temperature rise, and other potential dangers.

What is UL 60335-2-127?

UL 60335-2-127 is a technical standard related to the safety of appliances for healthcare and wellness purposes. It specifies the requirements for devices such as massage chairs, foot spas, and sauna equipment. Compliance with this standard ensures that these products are safe to use, protecting both consumers and manufacturers from potential hazards.

Key Requirements of UL 60335-2-148

To comply with UL 60335-2-148, manufacturers must ensure that their portable transformers and similar products meet the following key requirements:

Electrical Safety: The products must have adequate electrical safety features, including a risk-free electrical design, adequate insulation, and appropriate labeling.

Electrical Performance: The products must perform as intended, with minimal deviations from the manufacturer's specifications, and no significant impact on the environment or consumers.

Temperature Rise: The products must not exceed the temperature limits specified by the standard, and their thermal design must prevent thermal overheating.

Electrical Integrity: The products must be free from significant electrical interference, and their electrical components must be appropriately designed and installed.

User Protection: The products must be designed to minimize the risk of electric shock, fire, or mechanical injuries to users, and their instructions must be clear and accurate.


UL 60335-2-148 is an essential safety standard for portable transformers and similar products intended for household use. By complying with this standard, manufacturers can demonstrate that their products are safe for use, protecting both consumers and manufacturers from potential hazards. As a manufacturer of portable transformers, it is essential to ensure that your products meet the key requirements of UL 60335-2-148 to ensure the safety of your customers.



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