Supco MPR5 Ultra Start Compressor Capacitor Hard Start Kit for 1 to 3 HP Compressors 208/230/265V

The Supco MPR Ultra Start series hard start mechanical potential relay is designed for starting motors with a two-wire installation connection. This relay meets Original Equipment Manufacturer (OEM) requirements, ensuring it fits multiple applications. It features an instant re-start capability and a voltage-sensing function.

Recognized by Underwriter's Laboratories (UL) and certified by North American Technician Excellence (NATE), this hard start mechanical potential relay is suitable for use in heating, air conditioning, and refrigeration applications.

Relay switches, also known as electrical relays or electrical relay switches, utilize a small amount of power to control a larger source of power connected to electrical devices such as car motors, computers, and lighting installations. A basic relay switch comprises a control circuit with an electromagnetic coil and a load circuit with contacts and a lever.

When current flows into the relay switch, it passes through the coil, creating a magnetic field that causes the lever in the load circuit to move between contacts, either turning the device on or off. In a normally open (NO) relay switch, the load circuit is closed, and the power source connected to the relay is turned on when power is supplied to the relay. Conversely, in a normally closed (NC) relay switch, the load circuit is open, and the power source connected to the relay is turned off when power is supplied to the relay.

Additionally, some relay switches employ non-moving parts, such as transistors or semiconductors, in the control circuit to operate the switching mechanism. Relay switches can be controlled by an external switch, like a light switch, or they can be connected to an automatically switched power source, such as a car ignition. One relay can operate multiple switches, and multiple relays can be operated with a single switch, with each relay functioning independently within the system.

Supco, a company founded in 1945 and headquartered in Allenwood, NJ, specializes in manufacturing test instruments and replacement parts for heating, ventilation, air conditioning, and refrigeration systems.

In summary, the Supco MPR Ultra Start series hard start mechanical potential relay is a versatile and reliable solution for starting motors, featuring a two-wire installation, meeting OEM requirements, and offering voltage-sensing capabilities, as well as UL recognition and NATE certification for HVAC applications.

product information: