







🔌 Power up with confidence — lock in your connection, lock out downtime!
The Sintron NEMA L6-30R is a 30 Amp, 250 Volt industrial-grade female twist-lock plug designed for welders, generators, and heavy-duty power tools. Featuring ETL certification, durable copper and nylon construction, and an easy-to-install design with color-coded wiring, it delivers reliable, safe, and secure power connections for demanding professional environments.










| ASIN | B09J13HRCB |
| Amperage | 30 Amps |
| Best Sellers Rank | #324,252 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #833 in Electric Plugs |
| Brand Name | Sintron |
| Color | Black |
| Connector Type | Crimp |
| Customer Reviews | 4.6 4.6 out of 5 stars (331) |
| Manufacturer | Sintron |
| Material Type | Copper, Nylon |
| Number Of Wires | 3 |
| Number of Poles | 2 |
| Plug Type | twist-lock |
| Product Grade | Industrial |
| Specification Met | NEMA |
| Voltage | 250 Volts |
T**D
Well built plug, good bite on the locking lugs onto the wire
Simple to connect the wiring, built strong. Solid plug for a generator cable that your wanting to add a specific plug onto
A**R
Good solid connection for house generator plug
I built a 50A 220v generator cord with this plug. Everything seems well made and should last a long long time. The locking grooves are snug for a good fit into the socket. Everything worked well when I tested it!
P**M
Very Solid
This is a solid plug and very sturdy. It fits the Connecticut Electric 50amp box just fine. This will be used to connect the new generator to the house in the event of a power outage. It took some effort to get the 3/1 #6 wire through the rubber in the black piece but it fits. Using #6 stranded was a little tight due to the shorter length so it will all fit in the housing, but was able to do it. I used a multimeter to make sure there were no cross connections. Haven't had the need to actually try the plug yet. I would recommend this plug.
P**R
Generator power cord end
Works great
I**S
Plastic ring instead of metal
Cheaper, but shell is plastic and not metal, easy to damage. OK for static applications.
R**1
Quality
Quality product. Was as advertised.
J**E
Great
Great
E**O
Excelente
Excelente
E**E
Prise femelle de bonne qualité, bien construite. Les conducteurs sont facile à passer dans les trous. J'a du 3 conducteur de calibre 10 avec de la gaine a caoutchouc et la prise a une rondelle aussi en caoutchouc qui sèle tres bien contre l'eau.
M**T
The installation of this 30 amp connector took me no more than 5 mins. Because I’m not an electrician I read the instructions just to be clear, but it wasn’t necessary as it was a no brainer. One of the reviews said that the person had a hard time installing it and suggested that it was a design problem. I suspect that this person is either from a competitor who wants to discredit the manufacturer, or simply does not know how to install standard plugs. If you are fairly handy, you’ll have no issues installing this connector. By the way, I am not associated in any way to this manufacturer and I have no other interest than to share my experience with others.
A**R
En matière de prises difficille de faire mieux. Excellent produit, système de compression extérieur pour le câblage extrêmement solide et sécuritaire.
M**B
Works great strong waterproof plug used it for ev charging my personal electric vehicle
K**N
Just what I needed, and the price was right in comparison to the local price.
Trustpilot
2 weeks ago
2 weeks ago