What is UL 61058-2-79:2020?

UL 61058-2-79:2020 is a technical standard that specifies safety requirements and test methods for switches used in household appliance control functions. This standard, issued by Underwriters Laboratories (UL), covers switches with a rated voltage not exceeding 480 V AC and a rated current not exceeding 63 A. It aims to ensure the safety and reliability of switches used in various household appliances, such as ovens, refrigerators, washing machines, and more.

The Importance of UL 61058-2-79:2020

UL 61058-2-79:2020 plays a critical role in ensuring the safety and performance of switches used in household appliances. Compliance with this standard helps manufacturers meet regulatory requirements and demonstrates their commitment to producing safe and reliable products for consumers. By adhering to the safety requirements and test procedures outlined in this standard, manufacturers can identify potential risks and hazards associated with switches and take appropriate measures to mitigate them.

Key Requirements of UL 61058-2-79:2020

UL 61058-2-79:2020 outlines several important requirements that switches must meet to ensure safety and functionality. These requirements include:

Insulation resistance: The switch should have sufficient insulation resistance to prevent electric shocks and short circuits.

Contact resistance: The contact resistance of the switch should be within specified limits to reduce heat buildup and ensure proper electrical conductivity.

Durability: The switch should be designed to withstand repeated mechanical operations without failure.

Temperature rise: The temperature rise of the switch under normal operating conditions should not exceed specified limits to prevent overheating.

Dielectric voltage withstand: The switch should be able to withstand a specified voltage without breakdown or insulation failure.

Testing Procedures under UL 61058-2-79:2020

UL 61058-2-79:2020 also provides detailed test procedures to assess the compliance of switches with the safety requirements. These tests include:

Visual inspection: A visual examination is conducted to identify any visible defects or abnormalities in the switch.

Electrical endurance: The switch undergoes multiple cycles of operation at specified load conditions to evaluate its durability and performance.

Insulation resistance test: A measurement of insulation resistance is performed to ensure adequate insulation protection.

Contact resistance test: The contact resistance between switch terminals is measured to verify proper electrical conductivity.

Dielectric voltage withstand test: The switch is subjected to a high voltage to determine its ability to withstand electrical stress.

Overall, UL 61058-2-79:2020 provides a comprehensive framework for ensuring the safety, reliability, and performance of switches used in household appliances. Manufacturers and consumers can rely on this standard to set quality benchmarks and promote the development of safe and efficient products.