Electric center accessories work with both Siemens and Murray brands of electrical distribution equipment and helps you get the job done the first time and fast. This accessory is back by a 1-year warranty and is UL listed for all Siemens and Murray breakers. Designed to fit QP, QPH, HQP, BQ, BQH, HBQ, MP-T, MP-HT, MP-MT and LQ breakers.