What is UL 489-2020 ?

What is UL 489-2020?

UL 489:2020 is a widely recognized safety standard for molded-case circuit breakers, switches, and thermal-magnetic circuit breakers. The purpose of this standard is to ensure that these electrical devices meet minimum safety requirements and can effectively protect electrical systems from overloads, short circuits, and other electrical faults.

Key Changes in UL 489:2020

UL 4299-2020 is a technical standard designed to establish minimum safety requirements for various electrical appliances. It covers a wide range of products, including but not limited to household appliances, power tools, and electronic equipment.

The Importance of UL 4299-2020

UL 4299-2020 is important for ensuring the safety and reliability of electrical appliances. It sets forth guidelines and criteria that must be met to ensure the safe operation of these devices. By complying with this standard, manufacturers ensure that their products are safe, reliable, and compatible with various electrical systems.

Key Components of UL 4299-2020

UL 4299-2020 covers various components of electrical appliances, including but not limited to:

1. Electrical Safety

UL 4299-2020 establishes minimum requirements for electrical safety, including but not limited to:

* The use of non-incorrect materials, such as those that are not listed in Table 13, can pose a risk of electrical shock or fire.

* The use of appropriate wiring and insulation, as specified in Table 14, ensures the safety of the device.

* The device must have an appropriate grounding system, as specified in Table 15.

2. Electrical Performance

UL 4299-2020 also establishes minimum requirements for electrical performance, including but not limited to:

* The device must be able to operate within its rated voltage and current, as specified in Table 16.

* The device must have an appropriate overload and short circuit protection, as specified in Table 17.

* The device must have an appropriate thermal management, as specified in Table 18.

3. Electrical Discharge

UL 4299-2020 is also concerned with the safe handling and operation of electrical devices. It establishes minimum requirements for electrical discharge, including but not limited to:

* The device must not be capable of delivering more than 100 milliamps when in series with a 120-volt power source.

* The device must not be capable of delivering more than 75 milliamps when in parallel with a 120-volt power source.

Conclusion

UL 489:2020 is an important safety standard for electrical devices. It ensures that these devices meet minimum safety requirements and can effectively protect electrical systems from overloads, short circuits, and other electrical faults. By complying with this standard, manufacturers can ensure that their products are safe, reliable, and compatible with various electrical systems.