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APC Smart-UPS 3U rackmount unit with LCD display and six NEMA 5-15R outlets

APC

APC SMTL1500RM3UC Smart-UPS 1500VA 1350W Lithium-ion Rackmount 3U 120V 6 NEMA 5-15R Short Depth

SKU CH-6W1Y-E7RGQ

Line-interactive 1500 VA lithium-ion UPS with pure sine wave output, six NEMA 5-15R outlets, SmartConnect cloud monitoring and 11.9-inch short-depth 3U rackmount design

  • International Version120V
  • Input Voltage Range82 - 144V
  • Input Frequency50/60Hz +/- 3 Hz
  • Input ConnectionNEMA 5-15P
  • VA Rating1500 VA
  • Watts1350 Watts
  • Lithium-ion battery delivers up to 3x longer life than lead-acid models
  • 1500 VA and 1350 W pure sine wave output protects sensitive equipment
  • depth 11.9 inch rackmount fits space-constrained 3U enclosures
  • Built-in SmartConnect cloud monitoring plus SmartSlot for optional network cards
  • Automatic voltage regulation corrects 82 to 144 V input without battery drain

Purpose & Fit

The APC SMTL1500RM3UC is a 1500 VA, 1350 W line-interactive UPS built for 120 V environments. Its 3U rackmount chassis measures only 11.9 inches deep, making it suitable for short-depth cabinets. Lithium-ion chemistry reduces weight to 43 lbs and extends expected battery life to 5-10 years. Six NEMA 5-15R outlets provide battery-backed power for servers, network gear or sensitive electronics.

Sustained Load Behaviour

Under continuous demand the unit delivers pure sine-wave output at 120 V, maintaining voltage within the 82-144 V input window through automatic voltage regulation. Lithium-ion cells recharge fully in about 2 hours, supporting repeated discharge cycles without the capacity fade common in lead-acid designs. Typical transfer time is 6 ms with a 10 ms maximum, keeping connected loads running during brief utility interruptions.

Pre-Installation Checks

Verify that your rack can accommodate a 3U high, 17.25-inch wide unit with 11.89-inch depth and 43 lb weight. Confirm the site supplies 120 V via a NEMA 5-15P receptacle for the 8-foot input cord. Ensure the 680 joule surge rating meets your protection requirements and that the SmartConnect cloud monitoring or an optional SmartSlot card fits your management workflow.

Highlights

  • Lithium-ion battery delivers up to 3x longer life than lead-acid models
  • 1500 VA and 1350 W pure sine wave output protects sensitive equipment
  • depth 11.9 inch rackmount fits space-constrained 3U enclosures
  • Built-in SmartConnect cloud monitoring plus SmartSlot for optional network cards
  • Automatic voltage regulation corrects 82 to 144 V input without battery drain

Specifications

BrandAPC
ModelSMTL1500RM3UC
International Version120V
Input Voltage Range82 - 144V
Input Frequency50/60Hz +/- 3 Hz
Input ConnectionNEMA 5-15P
VA Rating1500 VA
Watts1350 Watts
Output Voltage120V
Output Frequency50/60 Hz +/- 3 Hz (auto sensing)
Outlets6
Outlet Type6 NEMA 5-15R (Battery Backup)
Battery TypeLithium Ion
Battery Recharge Time2 Hours
ApprovalsCSA C22.2 NO. 107.3, FCC Part 15 Class A, NOM, UL 1778, UL 1973
Surge Energy Rating680 Joules
Dimensions5.14" x 17.25" x 11.89"
Weight43.00 lbs.
VA1500 VA
Watt1350 W
OptionsSMTL1500RM3UC

Questions about this item

How much heat does the 1350 W lithium-ion UPS produce during continuous operation?

The unit uses a line-interactive topology with automatic voltage regulation, which runs cooler than double-conversion designs; the lithium-ion battery also generates less heat than lead-acid equivalents under the same load.

What input plug and circuit does the NEMA 5-15P connection require?

It ships with an 8 ft NEMA 5-15P cord, so a standard 120 V 15 A branch circuit and matching wall receptacle are all that is needed.

Will the 6 ms typical transfer time protect legacy servers with older power supplies?

Yes, the 6 ms typical and 10 ms maximum switch-over is well within the hold-up time of most legacy ATX and redundant power supplies, and the pure sine-wave output ensures compatibility with active PFC units.

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