The triplex breakers provide two single pole and one double pole breakers in half the space. Murray strongly recommends against the use of used breakers. Murray MP22020 circuit breaker; One 20-Amp double pole, two 20-Amp single poles; Triplex 1/2-Inch frame, plug in type; Space-saving design, UL listed... To ensure the warranty on a Murray panel is not voided, the use of Murray breakers is required. From the Manufacturer Murray space saving, plug in circuit breakers are intended for use in Murray load centers and meter combinations that are rated to accept type MH-T breakers. Murray 200 Amp Main Breaker with Staggered Lugs for Vertical Mount 20 Amp Siemens Breaker Murray MH-T Triplex MP22020 2x20A Single Pole 1x20A Double Pole Circuit Haven Breaker One 20-Amp double pole, two 20-Amp single poles Triplex 1/2-Inch frame Plug in type Space saving UL listed Mazda Genuine OEM 1994-2005 Miata Clutch Fork Dust Boot MPV 1995/12 FE51-16-214A. See full description These triplex, 1/2-Inch frame breakers are ideal when new circuits are required in a panel that has no available spaces.
