Technological Innovation

What is UL 60335-2-442 ?

Title: What is UL 60335-2-442: A Technical Standard for Safety in Appliances?


The safety of consumers is a top priority for Underwriters Laboratories (UL), a global safety science organization. The company has developed UL 60335-2-442, a technical standard designed to address specific risks associated with the use of certain appliances, particularly those utilizing ultraviolet (UV) radiation sources. This article will provide an in-depth explanation of UL 60335-2-442 and its significance in ensuring the safety and performance of appliances in the industry.

What is UL 60335-2-395?

UL 60335-2-395 is a technical standard developed by UL to address specific risks associated with the use of household and similar electrical appliances. The standard provides guidelines and requirements for manufacturers to ensure the safety and performance of their products. In other words, UL 60335-2-395 serves as a benchmark for the safety of electrical appliances in the home.

Key Requirements of UL 60335-2-395

To ensure the safety and performance of their products, manufacturers must comply with the key requirements of UL 60335-2-395. These requirements are divided into several categories, including:

1. Construction:

Manufacturers must ensure that their products are constructed according to the standard's requirements. This includes the use of appropriate materials, the design and layout of the product, and the provision of necessary markings and documentation.

1. Radiometric Output:

The standard specifies the level of ultraviolet (UV) radiation that can be emitted by the appliance. Manufacturers must ensure that their products emit less than the maximum allowable level, which is determined by the standard.

1. Marking:

The standard requires manufacturers to mark their products with specific symbols and information. These markings include a label that identifies the appliance's category, the manufacturer's name and address, and the product's serial number.

1. Documentation:

Manufacturers must maintain records related to their appliances. These records must include information about the appliance's design, materials, and testing.

What is UL 60335-2-360?

UL 60335-2-360 is a set of safety standards developed by UL for appliances using flammable refrigerants. The purpose of UL 60335-2-360 is to ensure the safe operation of such appliances and prevent any potential risks to users and the environment.

Key Requirements of UL 60335-2-360

To comply with the requirements of UL 60335-2-360, manufacturers must ensure that their appliances meet the following key standards:

1. Fire-Resistance:

Appliances using flammable refrigerants must be able to withstand a fire for a specified amount of time. The standard defines the duration of fire-resistance for different appliance categories.

1. Surface Burning Characteristics:

The standard sets forth the surface burning characteristics for flammable refrigerants, including the flammability of different materials and the depth of the fire.

1. Refrigerant Leakage:

The standard outlines the acceptable levels of refrigerant leakage from the appliance's compressor coils and any other components.

1. Electrical Characteristics:

The standard specifies the electrical requirements for appliances using flammable refrigerants, including the use of heat-resistant materials for electrical components and the provision of adequate grounding.


UL 60335-2-442 and UL 60335-2-360 serve as two key standards for the safety of household and similar electrical appliances. By following these standards, manufacturers can ensure that their products are safe to use, reliable, and meet the needs of their customers. Compliance with these standards is mandatory for manufacturers to ensure that their products are safe for use in the home.


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TAGS Test Probe BTest Probe 18Test Probe 11Go GaugesIEC 61032IEC 60335Test PinTest FingerIEC 60061-3Wedge Probe7006-29L-47006-27D-37006-11-87006-51-27006-51A-2 7006-50-17006-27C-17006-28A-1Test Probe7006-27B-1IEC 61010IEC 60529IEC 60068-2-75