The universal AC input CHD250 provides 250W of convection cooled output power in a 3″ x 5″ industry standard package, over the temperature range -20°C to +50°C with derating to +70°C.Approved for IT and Medical and with a feature set including a 5V standby output, <0.5W input power when in standby mode, power fail and inhibit signals the CHD250 is ideal for a wide range of applications where fan cooling is not desirable.


CHD250PS1280 to 264 Vac12 V / 20.8 A250W
CHD250PS1580 to 264 Vac15 V / 16.7 A250W
CHD250PS2480 to 264 Vac24 V / 10.4 A250W
CHD250PS2880 to 264 Vac28 V / 8.9 A250W
CHD250PS4880 to 264 Vac48 V / 5.2 A250W


Dimensions:CHD250: 5.00 x 3.00 x 1.43 in (115.0 x 76.0 x 36.0 mm)
CHD250-C: 5.50 x 3.48 x 1.75 in (139.7 x 88.5 x 44.4 mm)
Input Voltage:80-264 VAC (see datasheet)
No Load Input Power<0.5 W
Harmonic Currents:EN61000-3-2 Class A EN61000-3-2 Class C for load >60 W
Efficiency:91-92% typical
Operating Temp:-20 °C to +70 °C derate from 100% load at 50 °C to 50% load at 70 °C
Isolation:4000 VAC Input to Output, 2 x MOPP
1500 VAC Input to Ground 1 x MOPP
1500 VAC Output to Ground 1 x MOPP
Worldwide Safety Approvals:IEC60950-1 Ed 2, IEC60601-1 Ed 3 Including Risk Management
European Safety Approvals:EN60950-1, EN60601-1, CE Mark LVD & RoHS
US Safety Approvals:UL60950-1, CSA 22.2 No.60950-1-1:08, ANSI/AAMI ES60601-1:2005 & CSA C22.2, No.60601-1:08
EMC:EN55022/11, Level B conducted & Level A radiated