The Potter PSB-10 Bulk power supply provides continuous 24VDC power. The PSB supply features an efficient switch mode power supply design which is up to 50% more efficient than linear mode supplies. The PSB is used in applications where up to 10 Amps continuous power is required. Backup power is provided via batteries which can range in size from 7 - 55 Amp hour (18Ahr batteries can fit inside the cabinet; larger batteries require a battery cabinet.) Battery integrity is monitored via the built in charger which features a low battery cut-off circuit to protect against damage to the batteries during deep discharge.