MTBF will depends on the main power supply as these ABL8 power supplies may have the input voltage range from 100...120 V AC single phase [terminal(s): N-L1] or 200...500 V AC phase to phase [ terminal(s): L1-L2 ].
When working at 100% nominal load, MTBF of ABL8RPS24100 at 40°C ambient temperature is below :
At main power 220V: 33330 hours
At main power 500V : 29600 hours