What Does an Overload Relay Do?

Ex9R Series 12A Thermal Overload Relay

Overload relays play a critical role in everyday power systems, but how do they work? This article offers a high-level overview.

Ul and CSA Components in LV Control & Distribution Equipment

Understanding Product Standards and Certification in North America Introduction: In 2003, Underwriters Laboratories and CSA Group signed a memorandum of understanding, with the goal of simplifying the acceptance of electrical components used by Control Panel, Machinery and Power Distribution manufacturers. Under this Memorandum of Understanding (MOU), each certification body has agreed to treat components certified […]