High-Performance CuNi14 Copper Nickel Wire for Low-Voltage Circuit Breakers

Our High-Performance CuNi14 Copper Nickel Wire is a game-changer for low-voltage circuit breakers and beyond. Crafted from a precise blend of copper and 14% nickel, this alloy wire delivers the perfect mix of electrical performance, durability, and versatility. With a resistivity of 0.20 µΩ·m at 20°C, it ensures stable, efficient energy transfer in critical systems. Its standout feature? Exceptional corrosion resistance, making it a go-to choice for harsh environments like marine or industrial settings. Whether it’s powering circuit breakers, heating cables, or precision sensors, our CuNi14 wire is built to last, performing reliably up to 400°C.

What makes our wire special is its balance of performance and practicality. It’s not just about meeting specs—it’s about exceeding expectations. Easy to weld and form, it saves manufacturers time and money during production. From thermal overload relays to underfloor heating systems, our CuNi14 wire is designed to keep things running smoothly, no matter the application. We’ve poured our expertise into creating a product that’s reliable, cost-effective, and ready to tackle the demands of modern industries.

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The copper-nickel alloy market is on an upward trajectory, fueled by the growing need for reliable, high-performance materials in electrical and industrial applications. Low-voltage circuit breakers, a key application for our CuNi14 wire, are seeing increased demand in sectors like renewable energy, automotive, and smart infrastructure. The global push for energy efficiency is driving this growth, as industries look for materials that can handle tough conditions without breaking the bank. According to market insights, the copper alloy market is expected to grow at a steady CAGR of around 5% through 2030, with a focus on corrosion-resistant and thermally stable materials.

Trends in the industry point to a shift toward materials that offer both affordability and durability. CuNi14 fits the bill perfectly, providing a cost-effective alternative to higher-nickel alloys while outperforming pure copper in harsh environments. The rise of miniaturization in electronics is another key driver, as manufacturers need wires with precise resistivity and flexibility for compact, high-efficiency systems. Add to that the growing adoption of renewable energy systems—like solar and wind—that rely on dependable circuit protection, and it’s clear why CuNi14 is becoming a staple in the industry. Harsh climates and marine applications are also pushing demand, as corrosion resistance becomes non-negotiable.

Parameter:

Properties Material	Resistivity 200c μΩ.m	Max working temperature (℃)	Tensile strength (Mpa)	Melting point (℃）	Density (g/cm3)	TCR *10-6/℃ (20-600℃）	EMF vs Cu (μV/℃） （0-100℃）
CuNi1	0.03	200	210	1085	8.9	＜100	-8
CuNi2	0.05	200	220	1090	8.9	＜120	-12
CuNi6	0.1	220	250	1095	8.9	＜60	-18
CuNi8	0.12	250	270	1097	8.9	＜57	-22
CuNi10	0.15	250	290	1100	8.9	＜50	-25
CuNi14	0.2	300	310	1115	8.9	＜30	-28
CuNi19	0.25	300	340	1135	8.9	＜25	-32
CuNi23	0.3	300	350	1150	8.9	＜16	-34
CuNi30	0.35	350	400	1170	8.9	＜10	-37
CuNi34	0.4	350	400	1180	8.9	0	-39
CuNi44	0.5	400	420	1200	8.9	＜-6	-43

Size Range
Wire	0.08-7.5mm
Ribbon	(0.05-0.35)*(0.5-6.0)mm
Strip	(0.50-2.5)*(5-180)mm
Rod	8-50mm

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Our CuNi14 wire is a versatile performer, shining across a range of applications:

• Low-Voltage Circuit Breakers: The wire’s low resistivity and high thermal stability make it a critical component in circuit breakers and thermal overload relays. It ensures reliable protection against electrical overloads in residential, commercial, and industrial systems.

• Heating Cables: From underfloor heating to electric blankets and HVAC systems, our wire delivers consistent heat output and durability, even in extreme temperatures.

• Sensors: Its stable electrical properties make it ideal for precision sensors in automotive, aerospace, and industrial automation, where accuracy is everything.

• Marine Applications: Thanks to its corrosion resistance, the wire thrives in salty, humid environments, making it a top pick for marine electronics and offshore systems.

• Renewable Energy Systems: In solar inverters and wind turbine controls, our CuNi14 wire ensures efficient energy transfer and long-term reliability.

The beauty of our wire is its adaptability. It’s not just about meeting the needs of one industry—it’s about delivering consistent performance across the board, from high-stakes circuit protection to everyday heating solutions.

Company Comparison

When it comes to copper-nickel wire, we stand out from the competition. Our CuNi14 wire is engineered with precision, offering a unique combination of low resistivity, corrosion resistance, and thermal stability that’s hard to beat. Unlike other alloys on the market, which may prioritize one feature at the expense of others, our wire strikes the perfect balance. It’s designed to perform in the toughest conditions—think salty marine environments or high-heat industrial settings—without compromising on efficiency or cost.

Our manufacturing process is another advantage. We use state-of-the-art techniques to ensure every spool of CuNi14 wire meets strict quality standards. This means consistent resistivity, uniform composition, and flawless processability, which translates to fewer headaches for manufacturers. Other companies might cut corners to lower costs, but we focus on delivering value through durability and performance. Our wire’s ease of welding and forming also sets us apart, reducing production time and costs for our clients. Plus, our commitment to sustainability means we’re optimizing our processes to minimize waste while maintaining top-tier quality.

We also pride ourselves on our customer-centric approach. Our team works closely with clients to tailor solutions to their specific needs, whether it’s custom wire diameters or specialized packaging for high-volume production. While others may offer a one-size-fits-all product, we go the extra mile to ensure our CuNi14 wire fits seamlessly into your operations. It’s not just about selling wire—it’s about building partnerships that drive success.

Why Choose Our CuNi14 Wire?

Our CuNi14 Copper Nickel Wire isn’t just another alloy—it’s a solution designed to make your systems more reliable, efficient, and durable. Here’s why it’s the smart choice:

• Reliability: With consistent electrical and thermal performance, it keeps critical systems running without fail.

• Durability: Its corrosion resistance ensures a long lifespan, even in the harshest environments.

• Cost-Effectiveness: Offers premium performance at a price that makes sense for large-scale production.

• Versatility: From circuit breakers to sensors, it’s built to excel in a wide range of applications.

• Ease of Use: Its processability means faster production and lower manufacturing costs.

We’ve designed our CuNi14 wire to meet the challenges of today’s industries while preparing for tomorrow’s innovations. Whether you’re building cutting-edge renewable energy systems or reliable circuit protection for homes, our wire delivers the performance you need to stay ahead.

Comparison Table

Parameter	Our CuNi14 Wire	Competitor Alloy
Material Composition	Copper with 14% Nickel	Copper with varying nickel content
Electrical Resistivity	0.20 µΩ·m at 20°C	0.15–0.30 µΩ·m at 20°C
Corrosion Resistance	Excellent (marine/industrial)	Moderate to good
Max Operating Temperature	Up to 400°C	Up to 300–350°C
Processability	Easy to weld and form	Moderate, may require special tools
Cost-Effectiveness	High (balanced cost vs. performance)	Varies, often higher cost
Applications	Circuit breakers, heating cables, sensors	Limited to specific uses
Durability	Superior in harsh environments	Moderate, less reliable in extreme conditions

As industries continue to evolve, our CuNi14 Copper Nickel Wire is positioned to meet the growing demands of the electrical and industrial sectors. With its unmatched combination of performance, durability, and affordability, it’s no surprise that more companies are turning to us for their alloy needs. We’re committed to staying at the forefront of innovation, continuously refining our processes to deliver even better solutions. Our CuNi14 wire isn’t just a product—it’s a promise of quality, reliability, and partnership.

From renewable energy to marine applications, our wire is helping power the future. We’re excited to see where our CuNi14 wire takes our clients next, and we’re here to support every step of the way. With our expertise and dedication, we’re not just meeting industry standards—we’re setting them.

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About Us:

Our 12,000㎡ factory is equipped with complete capabilities for research, production, testing, and packaging. We strictly adhere to ISO 9001 standards in our production processes, with an annual output of 1,200 tons. This ensures that we meet both quantity and quality demands. Furthermore, all products undergo rigorous simulated environment testing including high temperature, high pressure, and corrosion tests before being dispatched, ensuring they meet customer specifications. 

For all our clients, we offer timely and multilingual after-sales support and technical consulting, helping you resolve any issues swiftly and efficiently.

Client Visits

Building Stronger Partnerships

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FAQs：

1. What is CuNi14 copper nickel wire used for?
   Our CuNi14 wire is used in low-voltage circuit breakers, heating cables, sensors, and thermal overload relays, offering reliable performance in electrical and industrial applications.

2. Why choose CuNi14 for circuit breakers?
   Its low electrical resistivity (0.20 µΩ·m at 20°C) and high thermal stability make it ideal for ensuring consistent performance and safety in circuit breakers.

3. Is CuNi14 wire corrosion-resistant?
   Yes, it’s highly resistant to corrosion, especially in marine and industrial environments, ensuring long-lasting durability.

4. What temperatures can CuNi14 wire withstand?
   It performs reliably in temperatures up to 400°C, making it suitable for heating and high-temperature applications.

5. Can CuNi14 wire be used in sensors?
   Absolutely, its stable resistivity and flexibility make it perfect for precision sensors in automotive and industrial systems.

6. Is CuNi14 wire easy to work with?
   Yes, it’s easy to process, weld, and form, which reduces manufacturing time and costs.

7. What industries benefit from CuNi14 wire?
   Industries like renewable energy, automotive, marine, and HVAC rely on its durability and performance for critical components.

8. How does CuNi14 compare to other alloys?
   It offers a cost-effective balance of low resistivity, corrosion resistance, and thermal stability compared to higher-nickel alloys or pure copper.