Custom Silver Tungsten Contacts for High Voltage Breakers 2026 – Chende Factory

Custom Silver Tungsten Contacts for High Voltage Breakers 2026
Chende Factory – Materials, Performance & Selection

January 2026 | 48 min read | Chende Electrical Contact R&D Center

Why Custom Silver Tungsten Contacts Are Essential for High Voltage Breakers in 2026

High voltage circuit breakers (72.5kV–550kV) are critical for power grids, handling massive currents and intense arcs. In 2026, with smart grid expansion and HVDC transmission, breakers need contacts that survive extreme conditions without failure. **Custom silver tungsten contacts** (AgW/Cu bimetal) are the standard: tungsten provides unmatched arc resistance and hardness, while copper reduces resistance and cost.

At Chende, we specialize in custom silver tungsten contacts for high voltage breakers. We accept drawings, specify tungsten content (30–70%), head shape, size, and plating, with low MOQ (10K pieces) and fast prototype (5 days). This guide covers materials, performance, selection, real cases, and 2026 trends – all from our factory experience. For the full custom process, see our main guide Custom Silver Electrical Contacts According to Drawings 2026.

Custom silver tungsten contacts in high voltage breaker application 2026

Custom Silver Tungsten Contacts Materials: AgW Ratio & Performance

For high voltage breakers, we customize AgW with tungsten content from 30% to 70%. Here's a comparison from our 2025–2026 tests:

Tungsten Content	Conductivity (% IACS)	Hardness (HV)	Arc Erosion (mg/10K cycles)	Anti-Welding Force (N)	Current Withstand (short-circuit)	Best For
AgW30/Cu	60–65	140–180	0.3–0.4	60–100	8,000A	Medium-high voltage
AgW50/Cu	55–60	180–250	0.2–0.3	80–150	10,000A	72.5kV+ breakers
AgW70/Cu	50–55	250–300	0.15–0.2	100–180	12,000A+	Ultra-high voltage

AgW50/Cu is our most popular for 72.5kV breakers due to balanced performance. We customize tungsten particle size for uniform distribution. For material comparison, see Bimetal Rivets Materials Comparison 2026.

Custom silver tungsten contacts performance comparison 2026

Performance of Custom AgW Contacts in High Voltage Breakers

Custom silver tungsten contacts achieve:

Arc erosion resistance: 0.2–0.3 mg/10K cycles
Hardness: 180–300 HV
Contact resistance: 10–15 mΩ
Current withstand: 10,000A+ short-circuit
Life cycles: 10K–100K operations

Chende customizes AgW50/Cu with nano-tungsten for better uniformity. For high voltage performance, see Bimetal Rivets in High Voltage Applications 2026.

Real Case: Custom Silver Tungsten Contacts in 126kV Breaker Upgrade

A Chinese grid operator upgraded their 126kV breakers. Original contacts failed after 3,000 operations due to erosion. We customized AgW60/Cu silver tungsten contacts with optimized tungsten particle size. Key improvements:

Contact resistance reduced to 10 mΩ
Life cycles increased to 15,000+
Arc erosion reduced by 35%
Temperature rise lowered under 4000A load

After 12 months, zero failures. They now order 800K pieces/year. This shows why custom silver tungsten contacts are essential for high voltage. For more cases, see Silver Contact Applications Guide.

Custom silver tungsten contacts in 126kV breaker case study 2026

2026 Trends: Custom Silver Tungsten Contacts in HVDC & Smart Grid

By 2026, custom silver tungsten contacts will see:

Nano-tungsten doping for 20% better arc resistance
Tri-metal designs for corrosion in offshore substations
IoT integration for predictive maintenance
Low MOQ (10K) for pilot projects

Chende is piloting nano-doped AgW/Cu for HVDC. For trends, see Silver Contact Industry Trends 2025–2030.

Chende Custom Silver Tungsten Contacts: Low MOQ & Fast Delivery

MOQ 10K, prototype in 5 days, mass production in 14–21 days. We accept small orders for testing. For custom silver tungsten contacts, see The 5 Most Recommended Silver Alloy Contacts for 2025.

Frequently Asked Questions About Custom Silver Tungsten Contacts for High Voltage Breakers

What is the best tungsten content for high voltage bimetal rivets?

AgW50/Cu (50% tungsten) is the best balance for 72.5kV+ breakers, with hardness 180–250 HV and arc erosion 0.2–0.3 mg/10K cycles.

Why customize silver tungsten contacts for high voltage?

Custom AgW contacts optimize tungsten content, particle size, and shape for extreme arc resistance and low resistance in high voltage breakers.

How long does it take to get custom silver tungsten contacts prototype?

Prototype in 5 days after drawing confirmation. Mass production in 14–21 days after approval.

Are custom silver tungsten contacts RoHS compliant?

Yes, they are fully RoHS compliant and meet 2026 environmental regulations.

What are common failure modes in high voltage silver tungsten contacts?

Arc erosion and overheating. Prevention includes nano-doping and proper copper base design.

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