OMRON BU300RW is a 3000VA / 2400W online double-conversion UPS made for the Japanese market. Its output can be set to 110/115/120V, so it also runs on North American and other 110–120V mains. The replacement battery is the BUB300R, and runtime can be extended with the optional BUM300R expansion battery.Japan-domestic UPS units like the BU300RW are often built into Japanese-made machines — semiconductor and SMT lines, inspection systems, machine tools and lab analyzers. Replacing a failed unit with the same model avoids rewiring and re-qualification. We ship genuine new units from Tokyo by FedEx; tell us your country and we will confirm voltage and plug before you order.Quick facts for international buyers Model BU300RW Usable on 110–120V mains Yes — set the voltage mode to 110/115/120V. Suitable for the USA, Canada, Mexico, Taiwan, the Philippines (110V areas), parts of Central/South America and Saudi Arabia, and Japan. For 220–240V mains a step-down transformer is required. Input voltage 85~143V Replacement battery BUB300R Expansion battery (optional) BUM300R Battery type Sealed lead-acid (VRLA), non-spillable. Expected life: 4–5 years at 20°C. Certification UL1778 Market Genuine new product for the Japanese market. Manuals and labels are in Japanese. Need help? See the OMRON / Mitsubishi UPS battery cross-reference, or contact us with your UPS model and country and we will confirm compatibility before you order. Manufacturer specifications UPS topology Online double-conversion (always-on inverter) Input voltage 85~143V Corresponding input frequency 50/60 Hz Output capacity 2400 VA Number of output outlets 6 Charging time 8 hours life expectancy 2 to 5 years size Width 438 x Height 130 x Depth 550mm Weight 33kg