Potterton Gold RL1 Isolation Relay The RL1 isolation relay is used when connecting 1 electric boiler on the same power supply as an electric shower. Allows for the boiler to cut out when the electric shower is switched on. Contact arrangement: SPCO Contact rating: 10 amps @ 250Vac Coil consumption: 500mW Coile operating voltage: 230Vac Temperature range: -40°C to 70°C Approvals: VDE, UL, CSA The relay assemblies are mounted on a DIN rail contained in a plastic housing. They can be used for a variety of applications, including controlling the boilers and operating pumps.