APC DC PWR SHELF 40A 48V 10 X GMT FUSE REARACCESS, 2400 W, 17 lbs (7.73 kg), No internal battery: uses external battery system, Rectifier Interface - TWF05-48, Hard Wire 3-wire, Hard Wire 4-wire (3PH + G), Hard Wire 5-wire (3PH + N + G), 19 x 11.2 x 5.2" (482.6 x 284.5 x 132.1 mm) APC DC PWR SHELF 40A 48V 10 X GMT FUSE REARACCESS. Output power: 2400 W. Weight: 17 lbs (7.73 kg). Battery type: No internal battery: uses external battery system, Interface: Rectifier Interface - TWF05-48, Input connection type: Hard Wire 3-wire, Hard Wire 4-wire (3PH + G), Hard Wire 5-wire (3PH + N + G)