Non-Insulated Red Copper Butt Terminal

As a professional manufacturer in China, Zenko would like to provide you quality Non-Insulated Red Copper Butt Terminal, which features thickened tube wall design, outstanding high pressure resistance and corrosion resistance. It is perfectly suitable for heavy-duty industrial scenarios such as distribution cabinets, motors and control panels. With burr-free smooth inner walls, it allows effortless wire insertion. Adopting cold crimp connection without welding, it delivers stable and firm wire joints, ensuring safe and reliable operation of industrial electrical systems.

What is Non-Insulated Red Copper Butt Terminal?

Zenko factory’s Non-Insulated Red Copper Butt Terminal is a professional wire butt splicing connector made of high-purity T2 oxygen-free copper. It is a core uninsulated electrical fitting designed for straight connection, extension and repair of copper wires. Without plastic insulating shell, it features simple structure, high heat dissipation and strong conductivity. Widely applicable to industrial electrical, power engineering, marine distribution and new energy equipment, it realizes stable and low-loss wire crimping connection.

Product Features

1. High-purity Copper Material, Super Conductivity

Non-Insulated Red Copper Butt Terminal Crafted from high-quality red copper through precision forging, this product features a pure, impurity-free material with excellent electrical conductivity and extremely low contact resistance. It generates minimal heat after crimping, effectively reducing power loss and eliminating issues such as circuit overheating and wire burnout. It ensures stable operation during long-term power-on use and is perfectly suited for a wide range of electrical connection scenarios involving currents of all sizes.

2. High Strength & Anti-loosening, Durable Use

The pipe walls are reinforced through a specialized manufacturing process, resulting in exceptional overall toughness, high tensile strength, and excellent crimping adhesion. The inner walls are smooth and burr-free, ensuring smooth cable passage without damaging the wires. Once crimped, the connection remains secure without loosening or coming apart. It offers excellent resistance to oxidation and corrosion, making it suitable for complex industrial and marine environments such as those with high humidity or salt spray, and ensuring a long service life.

3. Full Size Coverage & Wide Compatibility

Zenko Brand Non-Insulated Red Copper Butt Terminal is comprehensive, covering all mainstream sizes and suitable for a wide variety of standard copper wire connection needs. We offer custom sizing and tin-plating for corrosion resistance. With no soldering required, our cold-press installation is convenient and efficient, making them widely applicable for wiring projects in various fields, including distribution panels, motors, energy storage systems, new energy vehicles, and power grid equipment.

Center terminal connector

Non-Insulated Butt connector （Sizes can be customized）
Material:Red Copper(C1100/C1220)
ITEN NO.	Dimension(mm)				Cable Size
	L	D	d1	t	mm2	A.W.G
BN1.25T	15	3.32	1.85	0.75	0.5-1.5	22-16
BN2T	15	4.02	2.5	0.75	1.5-2.5	16-14
BN3.5T	15	5	3	0.95	2.5-4	14-12
BN5.5T	15	5.45	3.55	0.95	4-6	.12-10
BN8T	21	7	4.6	1.2	10	8
BN14T	26	9	6	1.5	16	6
BN22T	29	11.3	7.8	1.75	25	4
BN38T	32	13.2	9.5	1.85	35	2
BN60T	36	15.3	11.4	1.95	50	1/0
BN70T	37	17.5	13.3	2.2	70	2/0
BN80T	38	19.5	14.5	2.5	95	3/0
BN100T	38	22.1	16.4	2.85	120	4/0
BN150T	54	26.4	19.5	3.45	150	250-300
BN180T	57	28.5	21	3.75	185	300-350

BNT

Specification	D(mm)	d1(mm)	T(mm)
2.1*1.3	2.1	1.3	0.4
2.4*1.9	2.4	1.9	0.25
3.3*1.7	3.3	1.7	0.8
3.32*1.75	3.32	1.75	0.785
3.3*2.3	3.3	2.3	0.5
3.3*2.85	3.3	2.85	0.225
3.4*3	3.4	3	0.2
3.45*2.75	3.45	2.75	0.35
3.78*3.42	3.78	3.42	0.18
3.9*2.3	3.9	2.3	0.8
3.92*2.8	3.92	2.8	0.56
4*3.1	4	3.1	0.45
4.1*2.3	4.1	2.3	0.9
5.0*3.1	5	2.3	1.35
5.4*4.5	5.4	4.5	0.45
5.45*4.55	5.45	4.55	0.45
5.45*3.55	5.45	3.55	0.95
6.08*5.62	6.08	5.62	0.23
6.5*3.5	6.5	3.5	1.5
7.0*4.6	7	4.6	1.2
7.9*5.5	7.9	5.5	1.2
8*5	8	5	1.5
8.9*5.9	8.9	5.9	1.5
8.5*5.5	8.5	5.5	1.5
9*6	9	6	1.5
11.3*7.8	11.3	7.8	1.75
15.3*11.4	15.3	11.4	1.95
ETC....

BNT chamfered corner

Specification	D(mm)	d1(mm)	T(mm)	L(mm)
2.1*1.3*8	2.1	1.3	0.4	8
2.4*1.9*8	2.4	1.9	0.25	8
3.3*1.7*15	3.3	1.7	0.8	15
3.32*1.75*8	3.32	1.75	0.785	8
3.3*2.3*8	3.3	2.3	0.5	8
3.3*2.85*8	3.3	2.85	0.225	8
3.4*3*8	3.4	3	0.2	8
3.45*2.75*8.5	3.45	2.75	0.35	8.5
3.78*3.42*8.5	3.78	3.42	0.18	8.5
3.9*2.3*15	3.9	2.3	0.8	15
3.92*2.8*4.6	3.92	2.8	0.56	4.6
4*3.1*15	4	3.1	0.45	15
4.1*2.3*15	4.1	2.3	0.9	15
5.0*3.1*15	5	2.3	1.35	15
5.4*4.5*15	5.4	4.5	0.45	15
5.45*4.55*10.5	5.45	4.55	0.45	10.5
5.45*3.55*15	5.45	3.55	0.95	15
6.08*5.62*11	6.08	5.62	0.23	11
6.5*3.5*33	6.5	3.5	1.5	33
7.0*4.6*8	7	4.6	1.2	8
7.9*5.5*60	7.9	5.5	1.2	60
8*5*40	8	5	1.5	40
8.9*5.9*11	8.9	5.9	1.5	11
8.5*5.5*42	8.5	5.5	1.5	42
9*6*91	9	6	1.5	91
11.3*7.8*13.5	11.3	7.8	1.75	13.5
15.3*11.4*19	15.3	11.4	1.95	19
ETC....

Product Display

Zenko Non-Insulated Red Copper Butt Terminal adopt integrated forming process with smooth and burr-free surface. The overall tube wall is uniform and thickened, with fine workmanship and stable quality. Various conventional specifications are in stock, supporting customized processing. The minimalist uninsulated design ensures excellent heat dissipation and electrical conductivity, meeting high-standard industrial power connection requirements.

Company Strength

Zenko is a professional manufacturer focusing on the R&D, production and sales of electrical wiring terminals. The factory has advanced production equipment, mature production technology and complete quality inspection systems. All products are manufactured in strict accordance with international electrical standards, with stable quality, high precision and strong durability. We support mass bulk supply, fast delivery and sample testing. Adhering to strict quality control, we have won long-term trust from global customers, with products exported to many countries and regions, providing one-stop customized electrical connection solutions for B2B buyers.