What is UL 60947-5-2:2020

UL 60947-5-2:2020 is a technical standard developed by Underwriters Laboratories (UL), an independent safety science company. This standard specifically pertains to the application and performance of control circuit devices and switching elements, like switches and contacts bonded with a fuse, intended for controlling electrical circuits.

Scope and Purpose of UL 60947-5-2:2020

The main purpose of UL 60947-5-2:2020 is to ensure that control circuit devices and switching elements comply with certain safety requirements. These requirements are aimed at protecting individuals from electrical hazards, preventing fires, and promoting safe operation of electrical equipment. The standard covers several aspects, including the construction, ratings, performance, testing, and marking of these devices.

Key Requirements and Specifications

UL 60947-5-2:2020 sets forth various requirements that control circuit devices must meet to be considered compliant. Firstly, devices are required to have adequate mechanical strength and electrical ratings to handle the respective currents and voltages. They should also be able to withstand the environmental conditions they are designed for, such as temperature, humidity, and vibrations.

Furthermore, the standard emphasizes the importance of reliable and consistent performance. Control circuit devices are expected to function properly during their expected operational life without excessive degradation or failure. Testing procedures outlined in the standard evaluate characteristics like endurance, temperature rise, and short-circuit withstand capabilities to ensure reliable operation.

Certification and Compliance

Manufacturers seeking to market their control circuit devices must demonstrate compliance with UL 60947-5-2:2020. This typically involves submitting the product for testing to a recognized testing laboratory. If the device meets all the required criteria, it can receive a UL certification mark, indicating its compliance with the standard.

It's important for consumers and companies using electrical equipment to look for control circuit devices that carry the UL certification mark. This provides assurance that the devices have been tested and meet the necessary safety standards, reducing the potential risks associated with faulty or non-compliant products.