In traditional non-polarized relay technology, nominal coil voltage must be continuously applied to the coil side to energize the relay which creates takes away from the system’s overall energy consumption efficiency. However, many of Panasonic’s newest relays, including LF-G, HE-S, HE Series PV type, and HE-V series relays, can be operated with reduced coil voltage so that lower power consumption can be achieved. A highly efficient electromagnet design and optimal spring structure allow these relays to provide energy savings. This is a major benefit to designs where power saving is very important for energy conscience applications.

This feature of low coil holding voltage used to reduce coil holding power in AC load relays can be implemented in three common methods. While specifics to these methods are detailed below, each customer should always verify implementation in their actual circuitry.

Relays with high switching capacity tend to be larger in size and have larger contact gaps which require a higher amount of power to maintain the energized state. Therefore, it is even more critical to reduce the amount of power needed to maintain the energized state. Following any of the above approaches will allow for power saving which can be very important for energy conscience applications such as Electric Vehicle Supply Equipment (EVSE), Photovoltaic Power Generation Systems, and other forms of power distribution.