In contactors, one of the most overlooked yet critical components is the contact support.

It drives the repeated engagement and separation between moving and fixed contacts. With every switching action comes mechanical friction. Over time, wear resistance directly determines electrical lifespan and reliability.

To evaluate performance differences, we conducted a comparative wear test between standard BMC and our newly developed BMC 1615 LWR.

Test Setup: Same Conditions, Different Outcomes

Both materials were molded into identical contact supports and tested under the same operating conditions for 280,000 mechanical cycles.

Results: A Clear Performance Gap

Standard BMC

After testing:

• Visible wear grooves appeared on the surface

• Measured wear depth reached ~3 mm

This level of wear can lead to:

• Reduced contact pressure

• Altered contact travel distance

• Increased electrical resistance

• Potential switching failure

BMC 1615 LWR

After the same 280,000 cycles:

• No visible wear

• Surface remained intact

• Dimensions unchanged

What Makes BMC 1615 LWR Different?

BMC 1615 LWR is a low wear rate (LWR) composite material specifically developed for high-friction, high-cycle applications.

Through advanced formulation optimization:

• Resin system refined for surface durability

• Filler grading engineered for wear resistance

• Fiber content adjusted for structural stability

All while maintaining:

• High mechanical strength

• Excellent electrical insulation properties

Where It Makes the Most Impact

BMC 1615 LWR is ideal for:

• Contactor contact supports

• Relay sliding components

• High-frequency mechanical parts

• Electrical components requiring long-term wear resistance

From Material to Component: Full Integration Support

At Wenzhou Jintong, we go beyond material supply.

We provide:

• Application-specific material development

• Mold design optimization

• Process parameter control

Ensuring that laboratory performance translates into real-world reliability.

Conclusion: Wear Resistance Defines Lifecycle Reliability

In high-cycle electrical systems, failure rarely happens suddenly.

It begins with gradual wear—until performance drifts beyond acceptable limits.

BMC 1615 LWR eliminates that risk.

👉 Not just stronger.
👉 Not just more durable.
👉 But designed to remain unchanged over time.

About Wenzhou Jintong

Wenzhou Jintong Complete Electrical Co., Ltd. specializes in high-performance BMC/SMC thermosetting composites, precision mold design, and compression molding.

We deliver high-reliability material solutions for electrical equipment, automotive, and industrial applications.

📧 wendy.qiu@smcbmc.com
📞 +8613868305300