Primaries: 100V, 120V, 220V, 240V - 50/60Hz
primaries must be connected in series or parallel.
(suffix) SS = (Single Secondary) Secondary 1 only
(suffix) DS = (Dual Secondary) Secondary 1 &
rated below 1000VA come with metal disk and insulating
rated 1000VA and larger are center potted.
Part numbers MT100 through MT5000 carry full TUV