Typical backup time at half load. 19.4 minutes (140 Watts). Typical backup time at full load. 5.9 minutes (280 Watts). APC Smart-UPS SC 450VA 280W RM 1U SC450RM1U Manual.
SC450RM1U - APC Smart-UPS SC 450VA 280W Specifications: Key Features. (4) NEMA 5-15R (Battery Backup). Output Frequency (sync to mains).
Stepped Approximation to a Sinewave. 50/60 Hz +/- 3 Hz (auto sensing). Input voltage range for main operations. Input voltage adjustable range for mains operation. Maintenance-free sealed Lead-Acid battery with suspended electrolyte : leakproof.
LED status display with On Line : On Battery : Replace Battery and Overload indicators. Alarm when on battery : distinctive low battery alarm : overload continuous tone alarm. RJ-11 Modem/Fax protection (four wire dual line), RJ45 10/100 Base-T Ethernet protection. Full time multi-pole noise filtering : 0.7% IEEE surge let-through : zero clamping response time : meets UL 1449.
1.72 inches (44mm, 4.4cm). 17.0 inches (432mm, 43.2cm).
15.17 inches (385mm, 38.5cm). 6.46 inches (164mm, 16.4cm). 18.73 inches (476mm, 47.6cm). 23.17 inches (589mm, 58.9cm).