why do you crimp the connector 3x? One for each wire, what is the 3rd?

I’m not sure why you have to crimp 3x’s unless their tool is designed that way? I only crimped twice in my engine compartment of my pickup and have had no issues.

Will these work for 10/2 wire at 230V and 20 amps?

You should be able to use on 230 volt 20 amp. The yellow should handle 30 amp minimum. Usually if the wires fit in it. It will work

Do you have the Butt connectors that are 12-10 on one end and 16-14 on the other

No, they are the same on each end. The colors indicate the size, as well they are labeled.

Can these be submerged? I want to use them for a bilge pump.

Yes you can, the discription of the product says they are Marine Grade Waterproof Wire Connectors.

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⚡ Connect with confidence—waterproof, durable, and ready for any challenge!

PREMIUM COPPER CORE - Thicker copper ensures safer, more reliable electrical connections
VERSATILE DURABLE - Flame-retardant, waterproof, and compliant with ROHS, CE, ISO standards—perfect for marine, automotive, and home use
COMPLETE CONNECTOR KIT - 330 precision-sized connectors in 4 colors for every project
EASY GAUGE IDENTIFICATION - Color-coded, clearly marked tubing for quick, error-free selection
HEAT ACTIVATED WATERPROOF SEAL - 3:1 shrink tubing with hot melt adhesive locks out moisture and corrosion

The Haisstronica 330PCS Heat Shrink Butt Connectors kit offers a professional-grade solution with marine-certified waterproof sealing, high-quality thick copper cores, and a wide range of sizes and colors. Rated for 150°C and compliant with major safety standards, this kit is engineered for flawless, long-lasting electrical connections in boats, trucks, stereos, and more.

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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€ 157.88

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Colour	Red,blue,yellow,white
Connector Type	Butt Splice, Crimp
Contact Material	Copper
Insulation Material	Polyolefin
Terminal	Butt Terminal
Material	Copper
Brand	haisstronica
Specification Met	CE
Temperature Rating	150 degree celsius
Product Dimensions	20L x 20W x 20H Millimeters
Net Quantity	330 count
Manufacturer	haisstronica
UPC	192687298006
Country of Origin	USA
Model number	HS
Number of Memory Sticks	330
Item Weight	508 g
Item model number	HS
Voltage	12 Volts
Power Source	ac
Are batteries included?	No

330PCS haisstronica Heat Shrink Butt Connectors-Marine Grade Waterproof Electrical Crimp Wire Connectors Kit-Tinned Red Copper Insulated, for Boat,Truck,Stereo,Joint(4Colors/4Sizes)

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