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A smiling driver holding a blue solid-core EV connector, ready to plug it into her car

INSIDE THE CONNECTION.

Precision construction.
Long-term confidence.

A closer look at the solid-core connector construction described in the engineering catalog.

A CLOSER LOOK / SOLID-CORE CONSTRUCTION

Engineering, layer by layer.

Open full-size diagram ↗

Swipe across the diagram to read each annotation. The numbered details continue below.

Annotated AmpByte solid-core EV connector with a typical market hollow-core connector (not an AmpByte product) inset at lower left
Solid-core and hollow-core connector cutaways from the engineering catalog, page 4. Numbers identify the AmpByte construction details below.
10,000+mating-cycle design5 μmsilver platingTPE + TPUprotection and flexibility100%Waterproof

Ten parts.
One considered connection.

The value is in how the materials work together: stable contacts, insulated conductors, a rigid frame and a comfortable outer grip.

01

Heavy-Duty Connector

The connector body gives the internal assembly a durable external structure.

02

Beryllium-Copper Spring

The specified CuBe spring material supports repeated mechanical contact; the catalog pairs it with 5 μm silver plating.

03

Silicone O-Ring

A sealing element helps protect the relevant mating area as part of the overall connector construction.

04

Crimped Contact for Minimal Heat

Securely crimped to copper conductor, creating a low-resistance connection and minimal heat during high-current charging. No soldered joint is used.

05

Conductor Insulation

Individual conductor insulation separates the current-carrying paths.

06

Securely Anchored TPU Cable Jacket

The overmolding securely encases and locks the cable jacket in place. The reinforced joint withstands a sustained 50 kg pull, providing exceptional mechanical strength.

07

100% Waterproof Solid-Core TPE

Injected thermoplastic elastomer fills the internal construction rather than leaving a hollow shell around the assembly.

08

Rigid Internal Skeleton

An internal frame supports alignment and mechanical integrity.

09

Soft TPE Grip

Overmolded grip surfaces make the connector comfortable to handle while adding external protection.

10

Premium TPU Cable

The specified flexible TPU cable completes the connector assembly. Its conductor size, current and phase rating must match the charging setup.

HOLLOW CORE / SOLID CORE

What Is the Difference?

Construction DetailTypical Market Hollow-Core ConnectorAmpByte Solid-Core Design
Internal StructureAn empty cavity surrounds the internal assembly.Injected TPE fills the internal assembly, reducing voids.
Sealing ApproachThin silicone O-rings seal the hollow plastic shell; seal damage can allow water ingress.Solid-core overmolding surrounds the internal assembly.
AssemblyA multi-screw shell assembly can be vulnerable to seal failure under rough handling.A rigid internal skeleton is enclosed by solid TPE and an overmolded grip.
Cable RetentionThe cable is secured by a separate end cover and a metal cable clamp.Overmolding encases and locks the cable jacket in place; the reinforced joint withstands a sustained 50 kg pull.
WaterproofWater entering through a damaged seal can become trapped in the hollow cavity.Solid-core TPE filling reduces cavities where water and moisture can collect.
Mechanical StrengthThe hollow shell can crack under impact or crushing, compromising its structure and waterproofing.The robust solid-core construction withstands repeated vehicle-wheel rollovers while maintaining structural integrity and waterproofing for reliable protection.
Electrical RiskTrapped water can increase the risk of electrical leakage, short circuits and fire.Solid-core insulation and filling help avoid internal moisture accumulation.

Comparison of the two constructions and hollow-core limitations described in the engineering catalog, page 4 ↗.

Illustration of a car tire rolling over a teal solid-core Type 2 EV connector
Overmolded Solid Core. Tough to the Core. Serious strength. Solid-core confidence. IEC 62196-1:2022, Clause 33.2 sets a demanding vehicle drive-over benchmark: a 5,000 N wheel load at 8 km/h, with no damage that compromises electrical safety, enclosure protection or operation. Our rigid internal skeleton and solid TPE core are engineered to resist crushing and protect the connection from the inside out.