What is a shielded 3R Cat.6A modular plug?

Shielded 3R Cat.6A Modular Plug Explained

I. Core Functions

▸ Triple Protection Design:

Electromagnetic Interference Resistance: The metal casing (zinc alloy/nickel plating) encloses the plug, blocking signal interference from motors, inverters, and other equipment.
Outdoor Weather Resistance: The casing features an anti-UV layer (to prevent embrittlement from sunlight) + a waterproof rubber ring (to prevent rainwater penetration), making it suitable for outdoor environments.
Physical Anti-Dislodgement: Some models have reinforced buckles to resist wind vibration or accidental pulling.

II. Structural Features

▸ Shielding + Waterproofing Integration:

An EPDM rubber ring is embedded in the edge of the metal casing, providing both shielding grounding and IP54 splash-proof protection after crimping.

▸ Anti-Corrosion Design:

Gold-plated contacts prevent oxidation, and stainless steel buckles prevent corrosion, making it suitable for high-humidity environments.

▸ Cable Locking Structure:

The metal teeth at the tail end grip the cable's shielding layer and outer sheath, providing anti-pull and anti-loosening capabilities.

III. Typical Application Scenarios

▸ Outdoor Industrial Areas:

Factory rooftop APs, surveillance cameras – resistance to motor interference + rain and rust protection.

▸ Intelligent Transportation Systems:

Traffic light control boxes, electronic bus stop signs – shielding from vehicle electromagnetic interference, and the rubber ring prevents moisture corrosion.

▸ Coastal Facilities:

Dockside crane networks – resistance to salt spray corrosion, and the metal casing protects against seawater erosion.

IV. Key Installation Steps

▸ Shielding Layer Treatment:

The cable's metal shielding mesh must completely cover the plug's metal casing; otherwise, the anti-interference function will fail (see diagram below).
Operation mnemonic: Strip the wire → Fold back the shielding layer → Insert into the plug.

▸ Waterproof Sealing Essentials:

Before crimping, ensure the rubber ring is not twisted, and press with your fingers to ensure a tight fit.

▸ Lightning Protection Grounding:

Use a grounding wire (if the equipment has a grounding terminal) to prevent lightning surge damage.

V. Common Errors and Solutions

VI. Comparison with Non-Shielded 3R Plugs