Progressive Dynamics RV and Marine Automatic Transfer Relay System;120 Volt AC, 50 Amp;Generator to shore power automatic transfer relay system features: Heavy duty relays to prevent contact damage during high current transfer operation;Quick change replaceable circuit board;Protective cover easily snaps on or off

• Progressive Dynamics (PD52V) 50 Amp Automatic Transfer Relay System

Progressive Dynamics (PD52V) 50 Amp Automatic Transfer Relay SystemProgressive Dynamics