The Toshiba 4400 Series is a top-tier monolithic double-conversion Voltage and Frequency Independent (VFI) 3-phase Uninterruptible Power Supply (UPS) built on advanced technology 208V 4-wire all IGBT PWM input/output topology. The 4400 Series comes in two cabinet sizes: one for the 15, 20, 25, and 30kVA models, and another for the 50kVA model. A wide selection of different input and output voltages are achieved using built-in transformers or matching series auxiliary cabinets. The highly reliable 4400 Series offers total front access with 0” rear clearance and is seismic compliance ready. Application-specific battery backup times are achievable with internal batteries or through the 288VDC battery link. The 4400 Series’ low THD, large voltage and frequency window, and small footprint makes it ideal for continuous critical power needs in small data centers, healthcare imaging and analyzing equipment, light industrial, and manufacturing applications.