Name: Samlex NTX-600-12
Brand: Samlex America

For small RVs and vans that want a listed 600 W inverter for electronics and a small fridge.

No store we check sells it online; the maker lists where to buy or who installs it.

Pros

Cons

The Samlex NTX family

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 (this one)	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	3,000 W	3.4/5	$741.97
Samlex NTX-3000S-12	3,000 W	3.5/5	$732.40

How it scores

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.

Value no current price (neutral score used)50
Idle draw 0.9 A idle (about 10.8 W) with nothing plugged in13
Safety listing Intertek ETL listed; conforms to UL 458 and certified to CSA C22.2 No. 107.1100
Warranty 2-year warranty25
Features outlets only0
Efficiency 91% peak efficiency (maker rating)67

Output
Model number	NTX-600-12
Type	Pure sine wave inverter
Continuous power	600 W
Surge power	1,200 W for 1 s
DC input range	10.5 to 16.3 V
Idle draw	0.9 A (10.8 W)
Peak efficiency	91%
Connections
AC outlets	2
GFCI outlets	No
Hardwire terminal	No
USB ports	1
Transfer switch	No
Parallel units	No
Control and build
Remote	No
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	155 x 254 x 59 mm
Weight	2.4 lb
Warranty	2 years

For a van or truck cab that needs listed power for electronics and a USB charger.

For an RV or boat that wants a listed 1,000 W inverter with GFCI outlets. The newer PST-1000-12HD adds a hardwire terminal.

A small, listed inverter for CPAPs, laptops and TVs in a trailer or van. You pay a premium for the listing and Xantrex support.

$275.43