Answer
Apr 24, 2026 - 10:56 AM
In the marine context, these terms are often used interchangeably because they both function as electromagnetic switches. However, a solenoid is typically a heavy-duty relay designed to handle very high currents (like an engine starter or a main battery switch). A relay usually refers to a smaller device used to switch lower-current circuits, such as navigation lights or small pumps, using a low-power control signal
