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SafetyUpdated 18 Sept 2026

Can you divide a junction box to separate different voltages or circuits?

Short answer

You can divide a junction box or electrical enclosure into separate functional zones using partitions or divider panels, which keeps equipment on different voltages, circuits or current sources apart. To get it right, specify both the box and the partition walls correctly: size the enclosure and the dividers around the equipment and the room available, choose materials suited to the application, and check whether the dividers need a special capability such as pre-embossing for cable bushings. We supply a wide range of plastic partition walls and holders that divide enclosures lengthwise or crosswise.

Yes. You can use partitions or divider panels to define multiple individual functional zones within your electrical enclosure, separating equipment with different voltages, circuits or current sources. To create successful arrangements, it is important to specify both the box and the partition walls correctly.

  • Dimensions: consider the dimensions of the electrical equipment that is to be contained and the room available. Based on these elements you can determine the size of the enclosure as well as how it should be divided, which in turn sets the required length and width of your divider or dividers.

  • Materials: identify the most suitable materials for the enclosure and its partition panels for your intended application. For example, if you need to ensure proper insulation for protection against harsh environmental conditions, our GEOS range of rugged, slide-in solutions is worth considering.

  • Special functions: take into account whether your divider walls should offer any special capability or support key functions. This could mean pre-embossed solutions to accommodate cable bushings, or suitable levels of protection to prevent interference where low voltage and power devices sit within the same enclosure.

At Spelsberg, our enclosure portfolio is complemented by a wide range of plastic partition walls as well as suitable holders. These can be used to divide the interior of enclosures lengthwise or crosswise, and are designed to be extremely easy and quick to mount and disassemble. As a result, our components are also ideal for retrospective installations and modifications to existing systems.

You can use our online product finder to identify which partition panel is best suited to your intended application: https://www.spelsberg.co.uk/product-finder/?query=partition

Where a custom solution is needed, our full product moulding, manufacturing and customisation facilities allow us to meet individual demands, delivering high quality bespoke enclosure solutions on extremely quick lead times. You can read more about our capabilities here: https://www.spelsberg.com/customizing/complete-array-of-expertise/

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