PowerLink? circuit breakers are one, two, and three pole thermal magnetic circuit breakers that provide arc fault circuit interrupters for PowerLink? Intelligent panelboard. They can be configured to automatically or manually reset once tripped using a bimetallic strip. This circuit breaker is HACR rated to a current capacity of 30 amperages, allowing for it be ideally used in congruence with HVAC systems. Certified by the Underwriters Laboratory to meet the designed specifications.