INDUSTRY COMPONENT

Contact Plate

A conductive plate in motor terminal blocks that establishes electrical contact between conductors.

Component Specifications

Definition
A precision-engineered metallic component within motor terminal blocks designed to create reliable, low-resistance electrical connections between incoming power cables and motor windings. It serves as the primary interface for current transfer, ensuring stable electrical continuity while accommodating thermal expansion and mechanical stresses during operation.
Working Principle
Operates on the principle of conductive contact pressure: when secured by terminal screws, the contact plate applies uniform pressure against conductors, creating a large surface area contact that minimizes electrical resistance and prevents arcing. It maintains consistent conductivity through spring-like properties or rigid clamping force.
Materials
Copper alloys (C11000, C17200), aluminum alloys (6061-T6), or bimetallic combinations; often tin-plated, silver-plated, or nickel-plated for corrosion resistance and enhanced conductivity.
Technical Parameters
ParameterTypical rangeNotes & selection driver
Thickness1.5-4.0 mm
Clamping Force15-50 N
Current Rating10-200A
Voltage RatingUp to 1000V AC/DC
Temperature Range-40°C to 120°C
Contact Resistance<0.5 mΩ

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards
ISO 8094, DIN 46234, IEC 60947-7-1

Parent Products

This component is used in the following industrial products

Engineering Analysis

Risks & Mitigation
  • Electrical arcing due to poor contact
  • Overheating from high resistance
  • Corrosion leading to connection failure
  • Mechanical fatigue from vibration
FMEA Triads
Trigger: Insufficient clamping force
Failure: High contact resistance leading to overheating
Mitigation: Use torque-controlled tightening and regular inspection
Trigger: Corrosive environment
Failure: Increased resistance and potential open circuit
Mitigation: Apply protective plating and use environmental seals
Trigger: Vibration-induced loosening
Failure: Intermittent connections and arcing
Mitigation: Implement locking mechanisms and vibration-resistant designs

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance
±0.1 mm dimensional tolerance, ±5% conductivity specification
Test Method
Contact resistance measurement per IEC 60512-5-1, thermal cycling tests, salt spray corrosion testing

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation
Request current drawings, revision history, and a signed specification sheet.
Manufacturing capability
Verify equipment lists, process limits, capacity, and representative production evidence.
Inspection readiness
Confirm test methods, calibrated equipment, sampling plans, and traceable reports.
Supplier transparency
Check the legal entity, factory address, ownership, certifications, and direct contacts.

Compare the published product scope and source details, then include your specifications and quantity in an enquiry.

Manufacturers of Contact Plate

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

SHANGHAI HXRT MD CO.,LTD.
Shanghai, CN
Also makes: Reagent Storage Tank
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Contact Plate”
View source page ↗ qeaklab.com · recorded 2026-09-17

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Frequently Asked Questions

What is the primary function of a contact plate in motor terminal blocks?

To establish and maintain a low-resistance electrical connection between power conductors and motor terminals, ensuring efficient current transfer and preventing overheating.

How often should contact plates be inspected?

During routine motor maintenance every 6-12 months, checking for corrosion, deformation, or discoloration indicating overheating.

Can contact plates be replaced individually?

Yes, but must match original specifications for material, dimensions, and plating to maintain electrical performance and safety compliance.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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