For RVs that want to feed the whole coach panel through a 30 A cord from a listed inverter.
Price checked October 24, 2026. As an Amazon Associate we earn from qualifying purchases.
Every Samlex NTX model we rank, smallest first. Ratings compare each against its own size.
| Model | Continuous | Rating | Price |
|---|---|---|---|
| Samlex NTX-400-12 | 400 W | 3.1/5 | - |
| Samlex NTX-600-12 | 600 W | 3.0/5 | - |
| Samlex NTX-1000-12 | 1,000 W | 3.1/5 | $373.32 |
| Samlex NTX-1500-12 | 1,500 W | 3.4/5 | $422.50 |
| Samlex NTX-2000-12 | 2,000 W | 3.4/5 | $511.88 |
| Samlex NTX-3000-12 (this one) | 3,000 W | 3.4/5 | $741.97 |
| Samlex NTX-3000S-12 | 3,000 W | 3.5/5 | $732.40 |
The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its size. How we rank explains each one.
| Model number | NTX-3000-12 |
|---|---|
| Output | |
| Type | Pure sine wave inverter |
| Continuous power | 3,000 W |
| Surge power | 6,000 W for 1 s |
| DC input range | 10.5 to 16.3 V |
| Idle draw | 1.1 A (13.2 W) |
| Peak efficiency | 90.5% |
| Connections | |
| AC outlets | 1 |
| GFCI outlets | Yes |
| Hardwire terminal | No |
| USB ports | None |
| Transfer switch | No |
| Parallel units | No |
| Control and build | |
| Remote | Included |
| App | No |
| Display | No |
| Safety listing | Intertek ETL listed; conforms to UL 458 and certified to CSA C22.2 No. 107.1 |
| Cooling | load-controlled fan |
| Dimensions | 216 x 451 x 92 mm |
| Weight | 12 lb |
| Warranty | 2 years |
A big, low-idle inverter for large off-grid banks at a modest price. The very short surge and lack of a listing count against it for air conditioners and permanent installs.
Amazon $379.99 EDECOA $360For cabins and work trucks that want a listed 3,000 W inverter with plain household outlets.
Amazon $732.40For RVs building around Go Power’s PowerTrak system that want an efficient 3000 W inverter with very low powersave draw.
Amazon $759.16Compare the Samlex NTX-3000-12 with any other 12V inverter →
More from Samlex America: every Samlex America product ranked.
