The CCB250 range of single output AC-DC 250W nominal, 300W peak power supplies feature industry leading useable efficiency of 93% and absolute minimum efficiency of 90% with 90VAC input and full load. This leap in efficiency has been achieved with full resonant ZCS topology and careful consideration to every aspect of power loss resulting in a convection cooled power supply packaged in a 6" (153mm) x 4" (102mm) x 1.5" (38mm) open frame design which can be easily installed into end applications due to a significant reduction in the dissipated heat, associated with other power supplies in this power range. The six standard models cover the voltage range from 12V to 48V , have dual input fusing and are compliant with IEC60601-1 Medical (BF) and IEC60950-1 IT safety approvals. The CCB250 series also boasts low earth leakage current of typically 60μA at 115V and 110μA at 230V, class B conducted emissions, 5V standby rail, power fail signal and remote on / off.