521781-1

The 521781-1 by TE Connectivity AMP Connectors sets new standards for Terminals - Housings, Boots in marine and offshore applications. This corrosion-resistant solution combines exceptional sealing performance with robust mechanical construction for harsh saltwater environments.With Housing naval-grade construction, this product exceeds DNVGL-RU-NAVAL certification requirements. The monel metal housing provides superior resistance to salt fog and sulfur exposure.Engineered for Quick Connect, Disconnect marine applications, these contacts feature gold-over-nickel plating for reliable low-voltage signaling. The self-cleaning contact design maintains conductivity in contaminated environments.The Female, Receptacle interface incorporates a triple-start thread for rapid mating in confined spaces. The stainless steel locking ring resists galling in high-vibration marine diesel applications.Manufactured to 0.187" (4.75mm), 0.250" (6.35mm) ABS standards, these terminals accommodate 600VAC marine power distribution. The tin-plated copper alloy resists dezincification in seawater.The 4 watertight configuration supports NMEA 2000 networking protocols. Each channel features individual capacitive isolation for ground loop prevention.With Side to Side capability, this system enables modular bridge equipment installations. The keyed alignment prevents incorrect mating in rolling sea conditions.Compatible with 0.187" (4.75mm) and 0.250" (6.35mmm) Quick Connects systems, this solution meets MIL-STD-202H salt spray requirements. The non-magnetic construction prevents compass interference.The Free Hanging (In-Line) design features ISO 12216-compliant deck penetration. The compression gland system accommodates various cable diameters without special tools.The Natural coding follows IMO resolution A.760(18) for marine safety systems. The luminescent pigment aids identification in emergency lighting conditions.