Samlex NTX-3000-12
#8 in Over 2,000 WFull review
For RVs that want to feed the whole coach panel through a 30 A cord from a listed inverter.
Amazon $741.97$741.97
The Samlex NTX-3000-12 rates 3.4 among over 2,000 W 12V inverters; the Samlex EVO-3012 rates 3.4 among inverter-chargers ones. The Samlex NTX-3000-12 costs $1,304.03 less ($741.97 vs $2,046).
Samlex EVO-3012
#25 in Inverter-chargersFull review
For larger RVs and boats that want a listed inverter-charger with fast lithium charging and generator support.
Amazon $2,046$2,046
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.
Scores side by side
These two sit in different size classes (over 2,000 W and inverter-chargers), and each is scored against the reference points for its own class, so a rating says how well each does among its own size peers. How we rank explains each factor.
| Factor weight | Samlex NTX-3000-12 | Samlex EVO-3012 |
|---|---|---|
| Overall rating | 3.4/5 | 3.4/5 |
| Value 30% | 48 $0.25 per continuous watt | 42 $0.68 per continuous watt |
| Idle draw 15% | 84 1.1 A idle (about 13.2 W) with nothing plugged in | 33 2.5 A idle (about 30 W) with nothing plugged in |
| Safety listing 15% | 100 Intertek ETL listed; conforms to UL 458 and certified to CSA C22.2 No. 107.1 | 100 ETL listed to ANSI/UL 1741 and 458 (with Marine Supplement) and CAN/CSA C22.2 No. 107.1-16 |
| Warranty 15% | 25 2-year warranty | 50 3-year warranty |
| Features 15% | 25 remote included; no app | 52 optional remote, lithium charge profile, hardwire terminal; no app |
| Efficiency 10% | 61 90.5% peak efficiency (maker rating) | 56 90% peak efficiency (maker rating) |
Specifications
| Samlex NTX-3000-12 | Samlex EVO-3012 | |
|---|---|---|
| Output | ||
| Type | Pure sine wave inverter | Pure sine wave inverter-charger |
| Continuous power | 3,000 W | 3,000 W |
| Surge power | 6,000 W for 1 s | 6,000 W for 100 ms |
| DC input range | 10.5 to 16.3 V | 9.1 to 17 V |
| Idle draw | 1.1 A (13.2 W) | 2.5 A (30 W) |
| Power-saving draw | - | 0.7 A |
| Peak efficiency | 90.5% | 90% |
| Connections | ||
| AC outlets | 1 | 0 |
| GFCI outlets | Yes | No |
| Hardwire terminal | No | Yes |
| USB ports | None | None |
| Transfer switch | No | Yes |
| Charger | - | 130 A |
| Lithium charge profile | - | Yes |
| Parallel units | No | No |
| Control and build | ||
| Remote | Included | Optional extra |
| App | No | No |
| Display | No | No |
| Safety listing | Intertek ETL listed; conforms to UL 458 and certified to CSA C22.2 No. 107.1 | ETL listed to ANSI/UL 1741 and 458 (with Marine Supplement) and CAN/CSA C22.2 No. 107.1-16 |
| Cooling | load-controlled fan | fan |
| Dimensions | 216 x 451 x 92 mm | 325 x 426 x 207 mm |
| Weight | 12 lb | 64 lb |
| Warranty | 2 years | 3 years |