Omron typically segments relays based upon how much amperage they are able to switch. The primary question to ask is how much amperage the relay will be switching and also how many poles will be switched by the relay. If the application calls for a single pole being switched in the most compact form factor, the G2RV series is Omron’s slim-line relay series. If the application calls for multi-pole general-purpose switching below 15 A, Omron has four different relay series to address the requirements. When the application calls for a focus on switching power, there are also four different relay options having the ability to switch multiple poles.