AC to DC switching enclosed power supply single output with PFC function 24 Volts 21 Amps 504 Watts 24 Volts 21 Amps specifications output power (W): 504 size (L x W x H) inches: 9 x 51.6 ripple & noise (mV p-p): 150 line regulation (): 0.2 percent load regulation (): 0.5 percent efficiency: 89 percent frequency range: 47-63 Hz voltage range 85-264 VAC agency approvals: UL/cul/TUV/CB/CE universal AC input/full range built in active PFC function, PF > 0.95 protections: short circuit, over voltage, over temperature, overload forced air cooling by built in DC fan with on-off control function built in remote sense function LED indicator for power on 3 year warranty detailed specifications: primary output voltage (VDC): 24 output current (a): 21 maximum output power (W): 504 family: rsp-500 input voltage (VAC): 85 to 264 input frequency: 47 to 63 maximum input current (a): 5.3 output connector Type: screw terminal block number of outputs: 1 product Type: AC to DC power supply efficiency ( percent ): 89 minimum isolation voltage: 3000V operating temperature-min (CEL): -30 operating temperature-max (CEL): 70 Length (inch): 9.06 width (inch): 5 height (inch): 1.59 agency approvals: UL/cul/TUV/CB/CE color: silver Type: auto switching style: enclosed.