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Compact black rectangular UPS with six NEMA outlets and power cord

APC

APC BN450M UPS 450VA 255W 120V 6 Outlets

SKU CH-ZXA0-9NKJ7 MPN BN450M

Provides 450 VA / 255 W battery backup with four protected outlets and two surge-only outlets, 1080 J surge rating, eight-hour recharge

  • Voltage version120 V
  • AC input voltage88–139 V
  • Input line frequency50/60 Hz +/- 3 Hz (auto sensing)
  • Power inputNEMA 5-15P
  • Volt-ampere rating450 VA
  • Power rating255 W
  • Provides backup power during outages with 255 W capacity
  • Protects connected devices from surges up to 1080 Joules
  • Six NEMA 5-15R outlets, four with battery backup
  • Recharges fully in eight hours for next use
  • Compact 5.52 x 9.98 x 4.13 inch design fits tight spaces

Compact UPS for basic desktop protection

The APC BN450M is a 450 VA, 255 W battery backup designed for 120 V environments. It provides six NEMA 5-15R outlets, four of which deliver battery-backed power while two supply surge-only protection. The unit weighs 5.73 lbs and measures 5.52 x 9.98 x 4.13 inches, fitting easily on a desk or shelf.

255 W load limit decides compatibility

The single figure that determines whether this UPS can support your equipment is the 255 W maximum output. Add the power draw of every device you intend to connect to the battery-backed outlets; if the total exceeds 255 W the unit will overload and shut down. The two surge-only outlets do not increase this limit.

Short runtime with eight-hour recharge

Under typical load the battery lasts six minutes, extending to ten minutes at lighter loads, which is only enough time to save work and shut down gracefully. After a discharge the sealed battery requires eight hours to recharge fully, so the UPS cannot sustain repeated outages in quick succession. It is not suited for users who need extended runtime or frequent power-loss coverage.

How it compares

Measured against everything we stock in Uninterruptible Power Supplies (UPS), at today’s prices. Recalculated every night.

Price $48.99
Cheaper than about 96% of the 1,153 comparable items (median $948.99).

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Specifications

Product
Brand nameAPC
Model nameBN450M
Power
Voltage version120 V
AC input voltage88–139 V
Input line frequency50/60 Hz +/- 3 Hz (auto sensing)
Power inputNEMA 5-15P
Volt-ampere rating450 VA
Power rating255 W
Voltage output120 V
AC output frequencySync to mains: 50/60 Hz +/- 3 Hz
Not synced: 50/60 Hz +/- 1 Hz
Power outlets6
Runtime on battery6 minutes typical / 10 minutes maximum
Battery charge time8 hour(s)
AlertsAlarm when on battery: distinctive low battery alarm
Surge protection rating1080 Joules
Size & build
Product dimensions5.52 in × 9.98 in × 4.13 in
Product weight5.73 lb (2.6 kg)
Shipping weight9.07 kg
Package size584 × 533 × 483 mm
Environment & compliance
Regulatory approvalsCalifornia (CEC) Battery Charger, cTUVus, ENERGY STAR (USA), FCC Part 15 Class B

Questions about this item

What does the 255-watt rating mean for the devices I can keep running during an outage?

The 255-watt limit is the maximum real power the four battery-backed outlets can supply; a typical desktop PC and monitor drawing under 255 watts will stay on for about six minutes, giving time to save work and shut down.

The unit uses a NEMA 5-15P input plug — what does that cap in practice?

A NEMA 5-15P plug fits a standard 120-volt 15-amp wall receptacle, so the UPS can draw up to 12 amps continuous from the mains without needing a special circuit.

How much space do I need to fit the 5.52-by-9.98-by-4.13-inch case?

The unit measures 5.52 inches wide, 9.98 inches deep and 4.13 inches high, so allow at least that footprint on a desk or shelf plus a few inches of clearance around the vents for airflow.

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