Plastic Enclosures in the Sun

The performance of plastic materials in the sun

Many plastic enclosures are designed to be UV stabilised to protect from solar radiation, direct or indirect sunlight. However, UV stabilisation can often have a different meaning to an end user compared with the plastic manufacturers.

To test what happens to plastic when exposed to direct, harsh sunlight, B&R Enclosures put a range of plastic enclosures up on the roof of our factory for a year to see what would happen.

It should be noted that this could be considered a very extreme test as: –

  • Our factory is located in Brisbane, Australia, one of the areas with the highest UV radiation in the world.
  • The largest face of the enclosure is in direct sunlight all the time.
  • There would be significant reflection from the factory roof which is made from steel.

Our recommendations are as follows:

  • Polynova PJ – Direct sunlight causes a yellowing of the material but no structural changes. Can be used when aesthetic concerns are not an issue.
  • Polynova PS – Can be used in all cases
  • Polynova PC
  • Polynova PM – Direct sunlight causes a yellowing of the material but no structural changes. Can be used when aesthetic concerns are not an issue.
  • Polynova PN – Can be used in all cases
  • Polynova PD – Do not use without appropriate sun shielding.
  • Polynova PU

Note: The yellowing seen is usually the result of a reaction involving the fire retardants used to make the enclosure safe for indoor usage. There is a method of reversing this reaction.

Polynova PC

Polynova PC

The Polynova PC series is a range of IP66 modular thermoplastic, general purpose enclosures. They are available in 19 sizes and have a wide variety of accessories to suit almost any application.

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Polynova PD

Polynova PD

The Polynova PD series is a range of IP65 general purpose enclosures with a hinged door, available in 6 sizes. Manufactured from a non-metallic material (GRP) the PD is available with a wide variety of accessories.

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Polynova PJ

Polynova PJ

Polynova PJ from B&R is a range of IP55 modular plastic enclosures or adaptable boxes designed to house terminations and electrical components.

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Polynova PM

Polynova PM

Polynova PM is an IP65 modular plastic enclosure which has been designed for use as individual enclosure or to be arranged in combinations to form complete distribution banks.

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Polynova PN

Polynova PN

The Polynova PN range is a hinged IP66, plastic enclosure system, with an easy to use latch assembly. It is available in 12 different sizes with opaque and transparent lids.

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Polynova PS

Polynova PS

The Polynova PS range, is an IP66 high performance enclosure system that is suitable for indoor and outdoor applications including use in full sunlight. There are 24 different sizes with the choice of opaque or transparent lids.

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Polynova PU

A non-metal, IP66 rated enclosure suitable for harsh environments and low voltage (LV) double insulated applications.

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