Hellermann Tyton 25mm² Copper Link - Suits 4 B&S/AWG
Hellermann Tyton 25mm² Copper Link - Suits 4 B&S/AWG
99.9% Pure Copper, Tinned, Annealed – AS/NZS 4325 Compliant

DESCRIPTION
Hellermann Tyton 25 mm² Copper Link: High-Conductivity Crimp Connector for 4 B&S/AWG Cables
Precision-Engineered Copper Link for Demanding Electrical Installations
The Hellermann Tyton 25 mm² Copper Link is a professional-grade crimp connector designed to create secure, low-resistance joints in 4 B&S/AWG cable applications. Manufactured from 99.9% pure copper and finished with a tin electroplating (5–10 microns), this link ensures excellent conductivity and corrosion resistance, making it suitable for automotive, marine, and industrial power systems.
Unlike generic connectors that may suffer from poor conductivity or premature oxidation, this copper link is annealed to enhance ductility, reducing the risk of cracking under vibration or thermal cycling. Its bellmouth entry simplifies cable insertion, minimising strand damage during assembly and ensuring a reliable crimp every time.
Key Features
- 99.9% IACS conductivity for minimal power loss and heat generation
- Tinned copper construction resists corrosion in harsh environments, including marine and coastal installations
- Annealed for high ductility (40% elongation), preventing stress fractures in mobile or high-vibration setups
- Bellmouth profile guides conductors smoothly, reducing installation time and strand damage
- Wide operating temperature range from -55 °C to +155 °C, suitable for engine bays and extreme climates
- Compliant with AS/NZS 4325 Part 1, meeting Australian and New Zealand safety standards
Built for Reliable, Long-Term Performance
Electrical connections are often the weakest link in any power system. The Hellermann Tyton 25 mm² Copper Link addresses this by combining high-purity copper with a low oxygen content (30 ppm max), which significantly reduces the risk of internal oxidation that can degrade conductivity over time. The tin plating provides an additional barrier against moisture and salt spray, making this link an excellent choice for marine wiring, 4WD dual battery systems, and solar installations where long-term reliability is critical.
With a total resistivity of just 1.72 micro-ohm cm, this link maintains efficient current flow even under high loads. Its 7.1 mm internal diameter and 47.6 mm length are optimised for 25 mm² conductors (4 B&S/AWG), providing a snug fit that maximises contact area and mechanical strength after crimping.
Applications Where Quality Matters
This copper link is ideal for professionals and DIY enthusiasts who demand dependable connections in:
- Automotive and 4WD electrical systems – battery cables, winch wiring, and auxiliary circuits
- Marine and boat wiring – corrosion-resistant design for saltwater environments
- Solar and off-grid power – low-resistance joints for charge controllers and battery banks
- Industrial equipment – control panels, motor connections, and heavy machinery
- Caravan and RV power systems – reliable connections for 12 V and 24 V setups
Note: This link is rated for a maximum current typical of 25 mm² cable, but actual capacity depends on installation conditions. Typical de-rating factors apply – consider ambient temperature, bundling, and duty cycle when sizing your system.
Why Choose Hellermann Tyton?
Hellermann Tyton is a globally recognised brand in cable management and connectivity, known for rigorous quality control and compliance with international standards. This copper link is no exception, delivering consistent performance that reduces the risk of voltage drop, overheating, and connection failure – problems that can lead to costly downtime or safety hazards in critical systems.
Upgrade your electrical connections with the Hellermann Tyton 25 mm² Copper Link and experience the difference that precision engineering makes. Whether you're rewiring a boat, building a custom 4WD setup, or maintaining industrial equipment, this link provides the durability and conductivity your project demands.
Add to cart now and secure reliable, long-lasting connections for your next installation.
SKU: Lug-25-LINK
SPECIFICATIONS
Specifications
| Description | Copper Crimp Link, Conductor Size 25 mm² |
|---|---|
| Type | CS25 |
| Part Description | CS25-CU-SR |
| Art.-No. | 924-00758 |
| Material | Copper (CU) |
| Colour | Silver-matt (MTSR) |
| Conductor Size | 25 mm² |
| Cable Size (Strands) | 19 x 1.35 |
| Inside Ø (ID) | 7.1 mm |
| Outside Ø (OD) | 9.5 mm |
| Length (L) | 47.6 mm |
| A/F Hex (A/F2) | 7.7 mm |
| Thickness (T) | 2.40 mm |
| Operating Temperature | -55 °C to +155 °C |
| Specifications | AS/NZS4325 Part 1 |
| Total Conductivity | 99.9% IACS |
| Low Oxygen Content | 30 ppm max |
| Tin Electroplating | 5–10 microns |
| Total Resistivity | 1.72 micro-ohm cm |
| Ductile Rating | 40% |
| SKU: | Lug-25-LINK |
| Model #: | Lug-25-LINK |
| MPN: | Lug-25-LINK |
WARRANTY
HellermannTyton Warranty Policy
This warranty policy applies to genuine HellermannTyton products supplied by us in Australia through authorised sales channels. This policy applies to the original end-user purchaser of the product, as evidenced by a valid invoice or proof of purchase, and is not transferable without our written consent.
We warrant that the HellermannTyton products supplied by us are free from defects in materials and workmanship under normal use and service, subject to the terms and conditions below. This warranty applies only to the HellermannTyton product supplied and does not cover installation workmanship, system design, connected equipment, or other products not supplied by us.
The benefits given by this warranty are in addition to any other rights and remedies available under law. Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.
Warranty Coverage and Periods
This warranty covers the following HellermannTyton product ranges supplied by us:
| Product model range | Warranty period | Notes / special conditions |
|---|---|---|
| Lugs and Links, including copper lugs, bell mouth lugs, circuit breaker lugs, long barrel lugs, copper links, bi-metal lugs and reducing links | 12 months from the date of purchase | Covers defects in materials and workmanship under normal recommended use. Correct cable selection, crimping method, die selection, torque, installation environment and compliance with applicable electrical standards remain the responsibility of the installer. |
| Heat Shrink Tubing, including thin wall, medium wall, thick wall, dual wall adhesive-lined and other heat shrink tubing ranges | 12 months from the date of purchase | Covers defects in materials and workmanship before installation and under normal recommended use. Incorrect heat application, overheating, under-shrinking, chemical exposure, abrasion, unsuitable sizing, or use outside the product’s stated ratings is not covered. |
| Pre-insulated Terminals and Insulated Lugs, including ring, fork, spade, quick-connect terminals, butt connectors, bootlace ferrules and related insulated crimp terminals | 12 months from the date of purchase | Covers defects in materials and workmanship under normal recommended use. Correct conductor preparation, crimping tool selection, pull testing, electrical loading and installation compliance remain the responsibility of the installer. |
Commencement of Warranty: The warranty period begins on the date of purchase by the original end-user, as shown on the invoice or proof of purchase. A valid proof of purchase from an authorised sales channel is required for all warranty claims.
Installer Responsibilities and System Design
HellermannTyton products supplied by us are generally intended to be installed, crimped, terminated, insulated, protected, or incorporated into a broader electrical installation, vehicle, vessel, building, machine, switchboard, cable assembly, or other operating environment. We do not provide installation services unless expressly stated in writing, and we do not supervise or control installation practices carried out by installers, contractors, dealers, resellers, or end-users.
Once installed, the product may form only one component of a larger electrical or mechanical system. The installer, electrician, system designer, integrator, dealer, or end-user is responsible for ensuring that the selected product is suitable for the intended application and is installed correctly.
All HellermannTyton products must be installed and used in accordance with the product documentation, applicable Australian Standards, relevant electrical and industry standards, manufacturer specifications, and recognised industry best practice. The installer must ensure that the product is used within its specified ratings, including cable size, conductor type, voltage, current, temperature, insulation requirements, environmental exposure, mechanical loading and any applicable crimping or shrinking requirements.
Issues or damage arising from incorrect installation, incorrect product selection, poor system design, unsuitable tools, incorrect crimping, incompatible conductors, inadequate protection, inappropriate heat application, unsuitable mounting, or failure to follow instructions are not product defects and are not covered by this warranty.
Warranty Exclusions
This warranty covers manufacturing defects or failures of the HellermannTyton product supplied by us arising from normal use in accordance with the applicable product specifications. It does not cover any failure, damage, performance issue, deterioration, or loss caused wholly or partly by external factors, misuse, incorrect installation, or circumstances outside our control.
Warranty exclusions include, but are not limited to:
- Incorrect installation or handling: Damage or malfunction caused by incorrect crimping, incorrect die selection, incorrect tool use, incorrect heat application, incorrect sizing, poor conductor preparation, incorrect stripping, incorrect torque, incorrect mounting, mishandling, or failure to follow applicable instructions or standards.
- Misuse, abuse or neglect: Use outside product specifications, overloading, excessive current, excessive heat, excessive mechanical stress, physical abuse, crushing, impact, careless handling, or continued use after a fault becomes apparent.
- Unsuitable application: Use of a product in an environment or application for which it was not designed, including exposure to chemicals, UV, moisture, abrasion, vibration, temperature, corrosion, or electrical loads beyond the product’s stated rating.
- Incompatible components: Failures caused by incompatible cables, conductors, terminals, connectors, tools, dies, heat sources, enclosures, switchgear, adhesives, tapes, insulation systems, or other third-party components.
- Environmental damage: Damage caused by water ingress, corrosion, salt mist, chemicals, excessive dust, mud, debris, contamination, excessive heat or cold, fire, smoke, lightning, flood, storm, pest damage, or improper storage.
- System design faults: Damage or failure caused by over-voltage, over-current, poor protection, inadequate fusing, insufficient clearance, poor cable support, vibration, cascading damage from another component, or failure of another part of the installation.
- Unauthorised modification or repair: Products that have been modified, altered, cut, reworked, repaired, tampered with, or used in a way that changes their intended function or rating.
- Normal wear and cosmetic deterioration: Normal wear and tear, cosmetic marks, fading, discolouration, surface scratches, residue, or deterioration that does not affect product function.
- Identification removed or altered: Where applicable, removal, defacement, alteration, or tampering with batch numbers, labels, markings, rating information, or other product identification may make the product ineligible for warranty service.
- Unauthorised resale or non-authorised purchases: Products purchased second-hand, from unauthorised marketplaces, auctions, liquidation sales, grey-market sellers, or unapproved channels may not be covered.
Making a Warranty Claim
Important: If you suspect a fault with a HellermannTyton product supplied by us, do not remove or alter the product unless it is unsafe to leave it in place or unless authorised by us or the place of purchase. Premature removal, cutting, re-crimping, reheating, or alteration may prevent proper assessment and may limit warranty coverage.
- Contact the place of purchase: Warranty claims should be initiated through the authorised dealer, reseller, distributor, or place of purchase.
- Provide product information: The customer must provide proof of purchase, product model or part number, batch or identification details if available, a description of the issue, and photos or videos showing the product and installation.
- Provide installation details: We may request information such as cable size, conductor type, tool and die used, crimping method, heat source used, installation environment, connected equipment, load conditions, and applicable test results.
- Assessment and troubleshooting: The product and installation details may be assessed to determine whether the issue is likely to be a product defect or caused by installation, product selection, connected equipment, environment, misuse, or another excluded factor.
- Return for inspection: If the fault cannot be confirmed by correspondence, photos, or remote assessment, the product may need to be returned for inspection, testing, repair, or replacement assessment. Return instructions will be provided by the place of purchase or nominated assessment location.
- Evaluation and outcome: If the product is confirmed to have a defect covered by this warranty, an appropriate remedy will be provided. If the product is found not to be faulty, or the issue is caused by an excluded factor, the claim may be rejected.
Remedies Under Warranty
If a defect covered by this warranty is confirmed, we may, at our discretion and subject to Australian Consumer Law, provide one or more of the following remedies:
- repair;
- replacement;
- refund;
- credit;
- supply of replacement parts; or
- another remedy required by law.
Where a replacement is provided, the replacement may be the same model, a superseded equivalent, or a product with similar specifications. Replaced products or components may become our property unless otherwise agreed.
Repair or replacement under this warranty does not restart or extend the original warranty period. The warranty continues from the original purchase date.
Limit of Liability
To the extent permitted by law, our liability under this warranty is limited to the repair, replacement, refund, credit, or approved remedy relating to the defective HellermannTyton product supplied by us.
To the extent permitted by law, this warranty does not cover consequential or incidental loss, including labour for removal or reinstallation, electrician costs, travel time, freight not approved by us, access equipment, downtime, loss of revenue, damage to other equipment, property damage, personal injury, or other economic loss.
Nothing in this warranty excludes, restricts, or modifies any rights or remedies that cannot be excluded under Australian Consumer Law.
Contact
For warranty support, please contact the authorised dealer, reseller, distributor, or place of purchase from whom the HellermannTyton product was purchased.















































