Amperite 50NO3 is a solid-state electronic relay used for heavy-duty industrial applications. The 50NO3 features reliable control and protective switching with easy installation and maintenance. It has automatic restart and undervoltage trip function and includes a start/stop control and a short-circuit protection circuit. This relay is typically used in motor control, electric heater, air conditioner, electric weighing machine, and a variety of other equipment. It has an operating temperature range of -40° to +85°C, a rated operational voltage of 110-220VAC or 24VDC, and a contact rating of 5.5A @ 250VAC. It has a compact, heavy-duty design and is made with premium-quality materials.