There are many different types of of electrical relays. Each electrical relay serves a slightly different purposes in controlling current. A latch relay, for example, is designed to save energy and maintain its contact point even power outages. Track mount relays transmit the power source via socket mounts that mount to a relay socket positioned on a DIN rail. Zoro carries these as well as polarized relays, wifi network relays and more. For more on relays, see our general purpose relays, time delay relays, solid state relays, and relay accessories.