Terminal Blocks - Accessories

Terminal Blocks - Accessories - Wire Ferrules

Part Number	Description / PDF	Quantity
FSD77-8-K Panduit Corporation	CONN FERRULE DIN 18AWG RED	3838
FSDX76-8-D Panduit Corporation	CONN FERRULE DIN 18AWG GRAY	2147483647
FSD78-8-DSL0 Panduit Corporation	CONN FERRULE DIN 16AWG BLACK	2147483647
F86-20-C Panduit Corporation	CONN FERRULE DIN 2AWG	60011900
FSD75-8-D Panduit Corporation	CONN FERRULE DIN 22AWG WHITE	54943
F83-12-D Panduit Corporation	CONN FERRULE DIN 8AWG	1186
FTD83-14-C Panduit Corporation	CONN FERRULE DIN 8AWG RED	3601300
F80-7-M Panduit Corporation	CONN FERRULE DIN 14AWG	2147483647
FSD92-32-Q Panduit Corporation	CONN FERRULE DIN 300 MCM YELLOW	751275
F78-7-M Panduit Corporation	CONN FERRULE DIN 16AWG	330064000
FSD78-8-D Panduit Corporation	CONN FERRULE DIN 16AWG BLACK	11236
FSD77-10-D Panduit Corporation	CONN FERRULE DIN 18AWG RED	2147483647
FSD80-8-D Panduit Corporation	CONN FERRULE DIN 14AWG BLUE	2147483647
F77-8-M Panduit Corporation	CONN FERRULE DIN 18AWG	580533000
FTD76-8-D Panduit Corporation	CONN FERRULE DIN TWO X 20AWG GRY	129570500
FSD77-12-D Panduit Corporation	CONN FERRULE DIN 18AWG RED	2147483647
FSD75-10-D Panduit Corporation	CONN FERRULE DIN 22AWG WHITE	5228
FSD73-8-K Panduit Corporation	INSULATED FERRULES ON MINI-REEL,	1700351000
F91-40-L Panduit Corporation	CONN FERRULE 4/0AWG	193
FSD77-8-DSL2 Panduit Corporation	CONN FERRULE DIN 18AWG RED	705067500

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

Type	Functional Features	Application Examples
Open Barrel Ferrules	Allow partial insertion of wires; suitable for frequent disassembly	Control panels in manufacturing systems
Insulated Ferrules	Include plastic sleeves for additional safety and insulation	Medical equipment and HVAC systems
Double-Crimped Ferrules	Provide dual compression points for enhanced mechanical strength	Automotive wiring harnesses
Multi-Wire Ferrules	Accommodate multiple wires in a single termination point	Power 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

Parameter	Significance
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

Manufacturer	Representative Product
Phoenix Contact	MAU-SET series ferrules with push-in technology
Weidm ller	KLUEGO color-coded ferrules for rail applications
TE Connectivity	Dynamic ferrules for automotive vibration environments
WAGO	TOPJOB 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