Aspen Breaker Rating Module

The Breaker Rating Module is a productivity tool designed to streamline the otherwise tedious work of checking the rating of circuit breakers against the short circuit currents they need to interrupt. The program logic adheres to ANSI/IEEE standards (for both total-current related and symmetric-current rated breakers) and to IEC standards.

The Breaker Rating Module is self-contained: It simulates faults with appropriate branch outages to find maximum short-circuit that flow through the breaker. It then computes the ANSI X/R ratio and adjusts the short-circuit current accordingly. Finally, it compares the currents to the rated capabilities of the breakers and reports the findings. Breakers with reclosing operations are checked with reduced ratings as required by the applicable standards.