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RS PRO Insulated Ring Terminal 4.3 mm Stud, Blue, 16 - 14 AWG, Nylon, Copper, E245391, 178-7259

Category Wire Terminal Brand RS PRO Condition New

Specifications

Country of Origin Taiwan
Brand RS PRO
Colour Blue
THICKNESS 0.8mm
Model 178-7259
Insulation Insulated
Overall Length 22mm
Contact Material Copper
Series E245391
Maximum Operating Temperature 105°C
Insulation Material Nylon
Minimum Operating Temperature -40°C
Contact Plating Tin
Minimum Wire Size mm² 1.5mm²
Maximum Wire Size mm² 2.5mm²
Minimum Wire Size AWG 16AWG
Maximum Wire Size AWG 14AWG
Outer Ring Diameter 8mm
Inner Ring Diameter 4.3mm
Stud Size 4.3 mm

Key Features

  • Designed for attaching wiring to electrical studs or posts.
  • Accepts 16 AWG to 14 AWG wire sizes for versatile compatibility.
  • Insulated with durable blue nylon for enhanced safety.
  • Features a copper contact with a tin plating for reliable conductivity and corrosion resistance.
  • Outer ring diameter of 8 mm and inner ring diameter of 4.3 mm for accurate terminal fitment.
  • Overall terminal length of 22 mm and a compact, easy-to-handle form factor.
  • Supports wire cross-sections from 1.5 mm² up to 2.5 mm² for broad industrial utility.
  • Suitable for use in industrial panels, control cabinets, automotive wiring, and general electronic assemblies.

Product Description

The RS PRO 178-7259 Insulated Ring Terminal is engineered to deliver a robust and secure connection in electrical installations requiring reliable terminations for 16 to 14 AWG wires. With a stud size of 4.3 mm, this terminal is designed to be compatible with standard mounting posts, making it suitable for a wide range of electrical and electronic applications.

The primary construction consists of a copper contact core, offering excellent electrical conductivity that minimizes resistance and ensures efficient current flow. The tin plating over the copper further protects the contact surface from oxidation, providing long-term corrosion resistance and operational reliability even in challenging environments.

For enhanced user safety and mechanical protection, the terminal incorporates blue nylon insulation. This high-grade nylon covering helps to prevent accidental short-circuits, electrical shocks, and provides additional strain relief to the terminated wire. Its insulation allows the terminal to withstand operating temperatures from -40°C up to 105°C, making it suited for industrial, commercial, and automotive settings where environmental conditions may vary.

The terminal features an outer ring diameter of 8 mm and an inner ring diameter of 4.3 mm, ensuring a precise and secure fit when mounted to the appropriate stud. Supporting wire sizes from 16 AWG (minimum) to 14 AWG (maximum) or wire cross-sections from 1.5 mm² to 2.5 mm², it delivers versatility for connecting conductors of varying sizes within the permitted range.

Measuring 22 mm in overall length and 0.8 mm in material thickness, the design allows for easy crimping and installation within tight spaces. The blue color coding adheres to standard electrical identification practices, simplifying installation and inspection procedures.

Ideal for use in control panels, manufacturing equipment, automotive harnesses, machinery, and building wiring assemblies, this insulated ring terminal helps facilitate safe, organized, and reliable electrical connections in both new installations and repair work. Its precise dimensions and quality materials ensure dependable performance, in line with panel assembly and maintenance standards.

For more technical wiring accessories and electrical components, browse the full RS PRO range and related industrial terminal products on EnvMart.

Explore more products in our Wire Terminal category.

RS PRO Insulated Ring Terminal 4.3 mm Stud, Blue, 16 - 14 AWG, Nylon, Copper, E245391, 178-7259
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Frequently Asked Questions

This model accepts wire sizes ranging from 16 AWG to 14 AWG, or wire cross-sections from 1.5 mm² to 2.5 mm².

It features an outer ring diameter of 8 mm and an inner ring diameter of 4.3 mm, with an overall length of 22 mm.

The contact material is copper, which is tin plated for corrosion resistance, while the insulation is made of durable nylon.

It can operate within a temperature range of -40°C to 105°C, making it suitable for various industrial and automotive applications.

The material thickness of this terminal is 0.8 mm.

This unit is designed for a stud size of 4.3 mm.

The nylon insulation enhances safety by preventing accidental short-circuits and electrical shocks, while also providing strain relief for the terminated wire.

It is ideal for use in control panels, automotive wiring, machinery, and general electronic assemblies.

The terminal is manufactured by RS PRO, a brand known for its range of electrical components.

The tin plating provides long-term corrosion resistance, ensuring reliable conductivity and minimizing oxidation on the copper contact.

Yes, it is designed for industrial applications, providing reliable connections in environments that may vary in temperature and conditions.

The country of origin for this insulated ring terminal is Taiwan.

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