High performance power units and circuits exposed to extreme enviroments require heavy duty connector enclosures built to withstand maximum physical abuse. The Deutsch HD series features rugged, circular thermoplastic housings designed specifically for heavy equipment, diagnostic ports, and high current engine bay junctions. Capable of housing a diverse mix of large gauge power contacts and smaller signal terminals in a single compact interface, these heavy duty connectors provide an exceptionally strong, vibration resistant locking mechanism alongside total environmental sealing for peace of mind.