AT06-4S-CAP is a protective end cap accessory designed for the Amphenol Sine Systems AT Series™ 4-position connectors. This component is part of the AT Series™ family of heavy-duty, multi-pin thermoplastic connectors rated for IP67, IP68, and IP69K environmental sealing in mated condition. The end cap provides protection for connector contacts and helps maintain the integrity of the environmental seals. It is compatible with the standard AT Series™ connector line, which supports current ratings of 13A to 25A depending on contact size. This accessory is commonly used in industrial applications requiring robust environmental protection and reliable electrical connections in harsh conditions.