Is the 221 series rated for aluminum?

I do not believe so, I believe you could use the 222 series with the WAGO contact paste - you would need to verify. The issue is always the chemical reaction that can cause a fire when aluminum, copper and moisture is involved. Not a fan of mixing the two types.

box above shows ul listed, etc, but then says "do not work.inder load!". at some point the power(load) has to be turned on, so what does that mean?

I used these lever nuts to power a 6,000 watt dr heater using a 10 gauge solid wire. The plastic gets a little warm. The lever sometimes lifts a little. See that it’s always down. I don’t recommend using these lever nuts where you can’t see them, like behind walls. ‘Do not put under load’ has #1 footnote. I don’t have the box anymore. I can’t tell you what that footnote is.

Can i use these on 12-2 wire?

Yes it will work with 12-2 wire I really prefer to use these when ever I can.

Is there a trick to opening the tabs? Mine will not open at all.

No trick to open. Mine lifted up easily enough and work great. Hold one side in your hand and lift the end of the other side tab where the wire goes into the connector. Make sure that you are lifting only the yellow tab and not catching on the clear edge of the connector under the tab. If necessary - use a flat edge to slip under the tab vice your fingernail for more leverage. (Like a screwdriver)

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Wago 221-612 Lever-Nuts 10AWG 2 Conductor Compact Wire Connectors 50 PK

Wago 221-612 Lever-Nuts 10AWG 2 Conductor Compact Wire Connectors 50 PK

Product ID: 78675079

Details

Brand
WAGO
Color
transparent
Connector Type
Lever-nuts
Current Rating
41 A
Manufacturer
WAGO
Material
Copper

⚡41A current rating

📦50 connectors per pack

🔧Supports 20-10 AWG wires

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Description

⚡ Connect smarter, faster, stronger with Wago 221-612!

UNIVERSAL COMPATIBILITY - Connects solid, stranded, and flexible copper wires seamlessly
QUICK LEVER NUT MECHANISM - Tool-free, fast, and reliable wire termination every time
BULK PACK FOR PROFESSIONALS - 50 connectors to keep your projects moving without pause
COMPACT TRANSPARENT DESIGN - Easily inspect connections for flawless installation
POWER THROUGH WITH 41 A CURRENT RATING - Handles heavy-duty electrical loads effortlessly

The Wago 221-612 Lever-Nuts are premium 2-conductor wire connectors designed for 20-10 AWG solid and stranded copper wires. Rated for 41 amps and UL listed, these compact, transparent connectors enable quick, tool-free, and reliable electrical connections. Each pack includes 50 pieces, perfect for professional electricians and DIY enthusiasts aiming for efficiency and safety.

Specifications

ASIN	B07GR815JJ
Best Sellers Rank	#56,769 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #49 in Electrical Connectors
Brand Name	WAGO
Color	transparent
Connector Type	Lever-nuts
Current Rating	41 A
Customer Reviews	4.8 4.8 out of 5 stars (781)
Item Weight	0.39 g
Manufacturer	WAGO
Material Type	Copper
Model	221612
Mounting Type	Panel Mount
Number Of Contacts	2
Number Of Poles	2
Number of Positions	50
Part Number	221612
Unit Count	1 Count

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11460 som

Duties & taxes included

In stock

Sold byAmazon KyrgyzstanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Kyrgyzstan.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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