Marinco Y Adapter 2-30A to 50A (125/250V) #153AY. Marinco shore power Y adapter 2-30A Locking to 50A (125/250V) Locking, with covers and sealing collars for use in wet locations. Y adapters are used to allow two connections from one shore power cable. Marinco Adapters are safe, reliable, compact and weather resistant. Comes with 5 year warranty. Female Connector: 2-30A 125V Locking with Sealing Collar System, attaches to cordset to boat inlet. Male Connector: 50A 125/250V Locking, attaches to dockside receptacle or cordset.