INDUSTRY COMPONENT

Contact Arm / Carrier

A precision component in contact assemblies that positions and supports electrical contacts for reliable signal transmission.

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Component Specifications

Definition
The Contact Arm/Carrier is a structural component within contact assemblies that precisely positions, aligns, and supports electrical contacts or contact elements. It ensures proper mechanical alignment and electrical connectivity by maintaining consistent contact pressure and orientation between mating surfaces. This component typically features mounting points, alignment features, and sometimes spring mechanisms to facilitate reliable engagement and disengagement in switching, connection, or signaling applications.
Working Principle
The Contact Arm/Carrier operates on mechanical positioning principles to maintain precise alignment of electrical contacts. It provides structural support that ensures consistent contact pressure and proper mating geometry, enabling reliable electrical continuity. During operation, it may incorporate spring-loaded mechanisms or pivoting action to facilitate engagement while minimizing wear and maintaining electrical performance across multiple cycles.
Materials
Typically made from copper alloys (C17200 beryllium copper, C51000 phosphor bronze) for conductivity and spring properties, stainless steel (302, 316) for corrosion resistance, or engineered plastics (PEEK, PPS) for insulation. May include plating such as gold (0.5-2.0μm) for low-resistance contacts or nickel underplating for barrier protection.
Technical Parameters
  • Contact Force 0.5-5.0N
  • Mechanical Life >1,000,000 cycles
  • Electrical Rating Up to 10A, 250V AC
  • Contact Resistance <20mΩ
  • Insulation Resistance >1000MΩ
  • Operating Temperature -40°C to +125°C
Standards
ISO 8092, DIN 41612

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Contact Arm / Carrier.

contact arm contact carrier electrical contact component contact assembly switching component connector part precision positioning Contact Arm / Carrier Contact Arm / Carrier in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Contact Assembly

A critical electrical switching component within a thermal overload protector that makes or breaks the circuit to the compressor motor based on temperature conditions.

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Engineering Analysis

Risks & Mitigation
  • Contact misalignment leading to intermittent connections
  • Material fatigue from cyclic loading
  • Corrosion in harsh environments
  • Plating wear causing increased resistance
FMEA Triads
Trigger: Material fatigue from repeated flexing
Failure: Loss of contact pressure leading to intermittent electrical connection
Mitigation: Use fatigue-resistant alloys, implement stress relief designs, conduct regular maintenance inspections
Trigger: Corrosion in humid or chemically aggressive environments
Failure: Increased contact resistance and potential open circuit
Mitigation: Apply protective plating, use corrosion-resistant base materials, implement environmental sealing
Trigger: Mechanical misalignment during assembly or operation
Failure: Poor contact mating causing arcing or signal degradation
Mitigation: Incorporate alignment features, use precision manufacturing tolerances, implement quality control checks

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±0.05mm for critical dimensions, angular tolerance ±0.5°
Test Method
Mechanical: Cyclic endurance testing per IEC 60512; Electrical: Contact resistance measurement per MIL-STD-202; Environmental: Salt spray testing per ASTM B117

Buyer Feedback

★★★★☆ 4.5 / 5.0 (12 reviews)

"Testing the Contact Arm / Carrier now; the technical reliability results are within 1% of the laboratory datasheet."

"Impressive build quality. Especially the technical reliability is very stable during long-term operation."

"As a professional in the Machinery and Equipment Manufacturing sector, I confirm this Contact Arm / Carrier meets all ISO standards."

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Frequently Asked Questions

What is the primary function of a Contact Arm/Carrier?

The primary function is to precisely position and support electrical contacts within an assembly to ensure reliable mechanical alignment and consistent electrical connectivity during operation.

What materials are commonly used for Contact Arms/Carriers?

Common materials include beryllium copper for spring properties, phosphor bronze for conductivity, stainless steel for durability, and engineered plastics like PEEK for insulated applications.

How does contact force affect performance?

Proper contact force ensures reliable electrical continuity while minimizing wear. Insufficient force causes intermittent connections; excessive force accelerates mechanical wear and increases insertion force.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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Connector/Terminal Head Contact Assembly