Terminal Blocks - Accessories - Wire Ferrules

Image Part Number Description / PDF Quantity Rfq
3240251

3240251

Phoenix Contact

CONN FERRULE 22AWG YELLOW

16251

3203040

3203040

Phoenix Contact

CONN FERRULE 24AWG BLUE

2147483647

3201929

3201929

Phoenix Contact

CONN FERRULE 14AWG BLUE

0

3200580

3200580

Phoenix Contact

CONN FERRULE DIN/W TYP 14AWG BLU

1556400

3201071

3201071

Phoenix Contact

CONN FERRULE W TYPE 2AWG BEIGE

40750

1208982

1208982

Phoenix Contact

CONN FERRULE 18AWG RED

0

3200085

3200085

Phoenix Contact

CONN FERRULE 12AWG ORANGE

18389900

3202520

3202520

Phoenix Contact

CONN FERRULE DIN 10AWG SILVER

795

3201136

3201136

Phoenix Contact

CONN FERRULE W TYPE 16AWG RED

1452047700

3201301

3201301

Phoenix Contact

CONN FERRULE DIN 20AWG ORANGE

374918300

3200182

3200182

Phoenix Contact

CONN FERRULE DIN 18AWG RED

34549900

3203163

3203163

Phoenix Contact

CONN FERRULE 18AWG GRAY

0

3240666

3240666

Phoenix Contact

CONN FERRULE 16AWG BLACK

0

3203118

3203118

Phoenix Contact

CONN FERRULE 18AWG GRAY

0

3240545

3240545

Phoenix Contact

CONN FERRULE 16AWG WHITE

0

3200739

3200739

Phoenix Contact

CONN FERRULE 4AWG BLACK

0

3241240

3241240

Phoenix Contact

CONN FERRULE DIN 1/0AWG SILVER

0

3240249

3240249

Phoenix Contact

CONN FERRULE 22AWG TURQUOISE

19000

3202591

3202591

Phoenix Contact

CONN FERRULE DIN 16AWG

0

3241242

3241242

Phoenix Contact

CONN FERRULE DIN 3/0AWG SILVER

0

Terminal Blocks - Accessories - Wire Ferrules

1. Overview

Wire ferrules are tubular connectors used to terminate stranded wires, ensuring reliable electrical connections in terminal blocks. They compress the wire strands into a solid ring or eyelet, preventing fraying and improving conductivity. These components are critical in industrial automation, power distribution, and control systems where vibration resistance and long-term stability are essential.

2. Main Types & Functional Classification

TypeFunctional FeaturesApplication Examples
Open Barrel FerrulesAllow partial insertion of wires; suitable for frequent disassemblyControl panels in manufacturing systems
Insulated FerrulesInclude plastic sleeves for additional safety and insulationMedical equipment and HVAC systems
Double-Crimped FerrulesProvide dual compression points for enhanced mechanical strengthAutomotive wiring harnesses
Multi-Wire FerrulesAccommodate multiple wires in a single termination pointPower distribution boxes

3. Structure & Composition

Wire ferrules typically consist of: - Conductive Body: Made from electrolytic copper or brass for optimal conductivity - Surface Coating: Tin-plated for corrosion resistance and solderability - Insulation Sleeve: Thermoplastic material (e.g., PA66) for insulated types - Barrel Design: Precision-engineered inner diameter matching specific wire gauges

4. Key Technical Specifications

ParameterSignificance
Conductor Cross-Section Range (0.2-6 mm )Determines current-carrying capacity and wire compatibility
Rated Current (5-30 A)Defines maximum operational current under standard conditions
Crimping Force (50-200 N)Affects connection reliability and cold welding prevention
Temperature Range (-40 C to +120 C)Specifies operational limits in different environments
Material Hardness (60-90 HV)Influences durability and resistance to deformation

5. Application Fields

Primary industries include: - Industrial automation (PLC control cabinets, CNC machines) - Energy systems (solar inverters, wind turbine controllers) - Transportation (railway signaling systems, commercial vehicle wiring) - Building technology (HVAC systems, smart grid interfaces)

6. Leading Manufacturers & Products

ManufacturerRepresentative Product
Phoenix ContactMAU-SET series ferrules with push-in technology
Weidm llerKLUEGO color-coded ferrules for rail applications
TE ConnectivityDynamic ferrules for automotive vibration environments
WAGOTOPJOB S ferrules with integrated test points

7. Selection Recommendations

Key considerations: - Match ferrule inner diameter to stripped wire length (typically 0.5-1.0 mm tolerance) - Select material based on environmental factors (e.g., tin-plated for humid environments) - Consider insulation requirements per IEC 61558-1 standards - Verify compatibility with terminal block clamping mechanisms - For high-vibration applications, choose double-crimped designs

8. Industry Trends

Current developments include: - Miniaturization for PCB-mounted terminal blocks (down to 2.5 mm pitch) - Integration with smart diagnostic systems (e.g., temperature-sensing ferrules) - Adoption of halogen-free materials for improved fire safety - Development of hybrid ferrules combining power and signal transmission - Increased use of automated crimping systems in production lines

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