Specifications
Lightning and Surge Protection: Passes
ANSI/IEEE C62.41 Category A.
Noise (RF) Suppression:
Full-time EMI/RFI filtering.
Efficiency:
> 95% on line (charger off).
Capacity VA/Watts:
280 VA/175 W; 420 VA/260 W.
Frequency: 50/60 Hz auto-sensing
(56 - 65 Hz or 45 - 54 Hz on line;
50/60 Hz ± 3% on battery).
Overcurrent Protection (on line): Fuse. See label on
unit for fuse size
and type.
Battery: One 12 V, 7 AH battery. Sealed,
maintenance-free, valve-regulated, UL 924
recognized.
Runtime:
SMT 280: Full load: 9 minutes, half load: 27 minutes.
SMT 420: Full load: 4 minutes, half load: 12 minutes.
Nominal
Model
Input/Output
(VAC)
A
230
B
120
T
230
Best Power reserves the right to change specifications without prior notice.
ENGLISH
Voltage Range,
Output
Line Operation
Receptacles
(VAC, ±3%)
191 - 272
One Australian
105 - 136
NEMA 5-15R
191 - 272
IEC-320
Output (on battery power):
Stepped square wave, RMS voltage regulated to
+5%, -13% of nominal.
Transfer Time: 2 ms typical, 4 ms maximum.
Recharge Time (to 90% of capacity): < 6 hours.
Load Compatibility: Can support 100% power factor
corrected, switch-mode power supply load.
Audible Noise (on line):
< 40 dBA at one meter, A weighted.
Ventilation: Air around the unit must be free of dust,
chemicals, or other materials that corrode or
contaminate. Air must be free to move around the
unit.
Dimensions: H x W x D
5 x 5 x 11.5 in. (120 x 120 x 290 mm).
Weight: 13 lbs. (5.9 kg).
TÜV certified; meets IEC 801-2 Level 3, IEC 801-
4 Level 3, IEC 801-5 Level 4.
Two
UL listed; cUL listed to CAN/CSA-C222 No.
107.1 M91; UL 1449; UL 1778.
Two
TÜV certified; meets IEC 801-2 Level 3, IEC 801-
4 Level 3, IEC 801-5 Level 4.
(10 A)
8
Compliance