Crown Technical Systems' single and dual breaker simulator offers an easy and convenient method of testing and validating power circuit breaker control and protection schemes on control panels without the need to operate the actual power circuit breaker. Validation of the DC circuitry, trip and close schemes, relay operation and status signals associated with the circuit breaker can be obtained with the use of this test equipment. The lightweight, rugged carrying case allows technicians to use this portable test equipment at any substation location.