Samlex PST-1500-48
#10 in Up to 1,500 WFull review
A listed, mid-size 48 V inverter for cabins and vans that want GFCI outlets and a hardwire option.
Mr. Solar $773.80$773.80
The Samlex PST-1500-48 is the better 48V inverter overall, rated 3.0 to 2.1. The Samlex PST-1500-48 leads on safety listing, value and warranty. The Samlex PSR-1200-48 wins on features. The Samlex PST-1500-48 costs $524.60 less ($773.80 vs $1,298.40).
Samlex PSR-1200-48
#17 in Up to 1,500 WFull review
For telecom or network racks on a 48 V plant that need 1,200 W of clean AC with utility transfer, not for a cabin or RV.
Don Rowe $1,298.40 Solarflexion $1,298.40$1,298.40
Prices were last checked October 24, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Samlex PST-1500-48 for safety listing (Intertek ETL listed; conforms to UL 458 and certified to CSA C22.2 No. 107.1 vs no UL 458 or UL 1741 listing stated), value ($0.52 per continuous watt vs $1.08 per continuous watt) and warranty (3-year warranty vs 2-year warranty).
- Choose the Samlex PSR-1200-48 for features (transfer switch, display; no remote vs optional remote, hardwire terminal; no app).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every up to 1,500 W 48V inverter; a clear win is highlighted. How we rank explains each one.
| Factor weight | Samlex PST-1500-48 | Samlex PSR-1200-48 |
|---|---|---|
| Overall rating | 3.0/5 | 2.1/5 |
| Value 30% | 31 $0.52 per continuous watt | 0 $1.08 per continuous watt |
| Idle draw 15% | 25 24 W idle with nothing plugged in | 25 24 W idle with nothing plugged in |
| Safety listing 15% | 100 Intertek ETL listed; conforms to UL 458 and certified to CSA C22.2 No. 107.1 | 0 no UL 458 or UL 1741 listing stated |
| Warranty 15% | 50 3-year warranty | 25 2-year warranty |
| Features 15% | 20 optional remote, hardwire terminal; no app | 30 transfer switch, display; no remote |
| Efficiency 10% | 56 90% peak efficiency (maker rating) | 56 90% peak efficiency (maker rating) |
Specifications
| Samlex PST-1500-48 | Samlex PSR-1200-48 | |
|---|---|---|
| Output | ||
| Type | Pure sine wave inverter | Pure sine wave inverter |
| AC output | 120 V | 120 V |
| Continuous power | 1,500 W | 1,200 W |
| Surge power | 3,000 W | 2,000 W |
| DC input range | 42 to 60 V | 40 to 60 V |
| Idle draw | 24 W (0.5 A at 48 V) | 24 W (0.5 A at 48 V) |
| Peak efficiency | 90% | 90% |
| Connections | ||
| AC outlets | 2 | 2 |
| GFCI outlets | Yes | No |
| Hardwire terminal | Yes | No |
| USB ports | None | None |
| Transfer switch | No | Yes |
| Pass-through rating | - | 16 A |
| Parallel units | No | No |
| Control and build | ||
| Remote | Optional extra | No |
| App | No | No |
| Display | No | Yes |
| Safety listing | Intertek ETL listed; conforms to UL 458 and certified to CSA C22.2 No. 107.1 | No |
| Design | - | High-frequency |
| Cooling | fan | load-controlled fan |
| Dimensions | 263 x 468.2 x 105.6 mm (10.4 x 18.4 x 4.2 in) | 482 x 386.8 x 44 mm (19 x 15.2 x 1.7 in), 1U |
| Weight | 15.6 lb | 12.8 lb |
| Warranty | 3 years | 2 years |