Surge protective device module. 3-phase models can be wired for WYE and delta AC systems. Typically used at the protected equipment. Provides point-of-use protection, easily replaceable and it provides the last line of defense against a lightning strike. Parallel connection: hardwired via 10 AWG wire. NEMA type-3R enclosure for indoor or outdoor use. Provided with 10 AWG stranded, 18 inch long pigtail leads. Used in type-2 applications.