Safe relay barriers are essential components of intrinsically safe applications. These devices limit current, voltage, total energy delivered to a sensor or any other actuator instrument located in a hazardous area. When used in areas with hazardous chemicals, gases or other ignitable atmospheres, limiting the energy is required to prevent any possible fires explosions from occurring. Dry contact switches can be connected to the EB3C. Illuminated switches also can be connected with the combination of the EB3S relay and the EB3L lamp barriers. Screw terminal connection to non-intrinsically safe circuit. Separate/common wiring compatible. Relay output.