Why is there not an MSHA label on Siemens Mining Duty breakers?
MSHA has developed standards for cable protection known as Trailing Cable settings, but has not published standards for circuit breakers. Circuit breaker manufacturers self-certify their equipment to meet these MSHA requirements for Trailing Cable Settings. Siemens meets MSHA requirements for mining circuit breakers, however, since there is not a written standard for mining duty circuit breakers, no labeling has been designed for this application.
