ABB (New Berlin, WI) and its Low Voltage Products division have released UL 1449 3rd Edition certified OVR DIN Rail surge protective devices (SPD), designed for long service life protecting valuable equipment. According to the company, these devices are designed to protect against transient surges from lightening strikes, surges from upstream equipment, and surges from utility load switching. The new OVR DIN Rail products are approved as UL Type 4 recognized components and are usable in Type 2 applications, covering permanently connected SPDs intended for installation on the load side of the service equipment overcurrent device. The new UL 1449 3rd Edition places SPDs into five different categories, with Types 1, 2 and 3 referring to different types of SPDs installed at specific locations; and Types 4 and 5 referring to components used in SPD configurations.
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