Surgelogic™ HWA surge protective devices are compact, nipple mounted parallel connected surge suppressors that come in a variety of voltage configurations, including Delta. A surge suppression path is provided for each mode and the product is rated NEMA type 4X. Internal diagnostics continuously monitor the device status. US and Canadian UL listed as a type 2 SPD to UL 1449 and UL 1283 standards. Complies with requirements of NEC article 285 and CSA C22.2 No. 8-M1986 as appropriate. Complies with UL 96A 12th edition master label requirements for lightning protection systems.