When electrical components need unwavering protection and underground cable joints demand robust insulation, the solution must be precise. Megapoxy 34 delivers that confidence. It ensures critical electrical systems remain encapsulated, insulated, and structurally sound, even in demanding environments. This specialized epoxy protects against insulation breakdown and structural degradation, ensuring long-term operational reliability. Get it right, and these vital connections disappear from your concerns.

Why this product exists

Megapoxy 34 is a low viscosity, 100% solids epoxy resin formulated specifically for the electrical and electronic industries. Its purpose is to provide superior dielectric and mechanical properties for the encapsulation of delicate electrical components and robust underground cable jointing. It is engineered to perform where standard general-purpose epoxies fall short, offering high-performance protection against environmental factors and mechanical stresses. This formulation ensures that encapsulated components, from small coils to substantial transformers, maintain their integrity and electrical function under operational loads and elevated temperatures.

The numbers that matter

With a Dielectric Strength of 315 kV/cm, Megapoxy 34 provides exceptional electrical insulation, crucial for preventing arc-over and insulation failure in high-voltage applications. Its Volume Resistivity of 1013 ohm.cm further underscores its ability to resist electrical flow, ensuring reliable performance across a broad range of electrical components. A Compressive Strength of 90 MPa means it can withstand significant mechanical loads without deforming or cracking, providing durable protection for encapsulated parts. This physical resilience, combined with a Peak Service Temperature of 150°C, allows encapsulated items to operate reliably even when internal heat generation is significant.

What it's like to use

Megapoxy 34 is supplied in a two-part kit, requiring a precise mixing ratio of 4 parts A to 3 parts B by volume or weight. Accurate measurement and thorough mixing are mandatory to achieve the specified performance characteristics. Once mixed, the product has a pot life of 30 minutes at 25°C, providing adequate working time for detailed encapsulation tasks. It sets in approximately 6 hours, reaching full cure within 24 hours at 25°C.

Before application, all surfaces to be bonded or encapsulated must be properly pre-treated. This involves cleaning with acetone or isopropyl alcohol to remove any impurities that could compromise bond strength or inhibit curing. Wire brushing is not an adequate surface preparation and will result in poor adhesion. For cleaning mixing implements and tools, Megapoxy Thinners is recommended. Always use disposable rubber gloves to maintain proper industrial hygiene during use.

Where this product excels

  • Underground Cable Jointing: This epoxy provides robust electrical insulation and mechanical protection for critical cable joints, ensuring long-term reliability and meeting the rigorous demands of infrastructure projects.
  • Encapsulation of Transformers and Coils: It offers superior dielectric properties and high-temperature resistance up to 150°C, protecting instrument, lighting, and small power transformers, as well as electrical coils, from environmental factors and operational heat.
  • Casting Electrical Switchgear Components: The 90 MPa compressive strength and excellent chemical resistance make it ideal for casting durable, compliant components that form part of electrical switchgear assemblies.

Choose this when

  • When electrical insulation and mechanical strength are equally critical: The application requires a material that can both isolate electrical current effectively and withstand significant physical forces.
  • When encapsulating components that generate heat: Its 150°C peak service temperature ensures stability and performance for transformers or coils under thermal load.
  • When dealing with underground electrical infrastructure: For cable jointing where robust, long-lasting protection against moisture, soil, and external loads is essential.
  • When specifying to AS3100-1990 standards: The project requires a certified epoxy for encapsulating electrical components and cable joints according to this Australian standard.

Don't use this when

  • Not for: General-purpose bonding or repairs where specific electrical properties are not required. This product is engineered for specialised electrical applications.
  • Not for: Surface preparation by wire brushing only. Proper pre-treatment with acetone or isopropyl alcohol is essential for adhesion.
  • Not for: Applications where an imprecise mix ratio is acceptable. Exact measurement of Part A and Part B is mandatory for achieving specified performance.

Megapoxy 34 conforms to AS3100-1990, including amendments 1 and 2 by AGL. This compliance verifies its suitability and performance for encapsulating and potting electrical components and cable joints under Australian standards.

Choosing the right Megapoxy epoxy

Megapoxy 34 is specifically engineered for critical electrical encapsulation and robust cable jointing applications, distinguishing it from other general-purpose epoxies. If your primary need is specialized electrical protection, Megapoxy 34 is the direct choice. For structural bonding applications requiring high strength in construction or repair, consider Megapoxy Megabond, which is formulated as a structural adhesive. If the job involves more general-purpose repairs or bonding where the unique electrical properties of Megapoxy 34 are not a priority, Megapoxy E provides a versatile and reliable solution.