The 321T/4 is a professional grade 32 amp in, 32 amp out, 4 way 13 amp distribution board built for situations where you need multiple 13 amp outlets from a single supply, but want the extra capacity that comes with a 32 amp feed.
It suits a wide range of setups, including:
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Workshops and test areas (multiple tools, chargers, small equipment)
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Cabins, offices and welfare (kettles, microwaves, heaters, small appliances)
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Exhibitions and retail (tills, screens, laptop stations, lighting)
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Site compounds and temporary installs where you need reliable, repeatable power distribution
Compared with a 16 amp supply, the 32 amp input gives you more available capacity across the outlets, making it the better choice where you’re running more devices at once or you’ve got a mix of loads that could otherwise push a 16 amp feed to its limit.
Built tough for repeated use
The enclosure is made from impact resistant polypropylene chosen for hard wearing use, with strong chemical and corrosion resistance. It is designed to be moved, stacked, stored and used repeatedly — a proper upgrade from domestic multiway adapters and extension blocks.
Loop through makes scaling easy
With the 32 amp loop through, you can run additional units or feed onwards neatly from the same supply. It keeps setups tidy and makes expanding socket count straightforward.
Clear “power on” indication
A green LED power indicator gives an instant visual check that the unit is live.
Why there is no RCBO on this unit
We often get asked why there isn’t a 30 mA RCBO inside the unit. In most compliant temporary power arrangements (including BS 7909 and BS 7671 practices), single phase supplies are expected to be RCD protected upstream. Adding another 30 mA device here would commonly result in two RCDs in series, which is typically redundant and can create nuisance tripping or confusion. This unit is intended to be used with correct upstream protection already in place.
IP rating note
With the socket covers closed and nothing plugged in, the 13 amp outlets are IP44. When plugs are inserted, the sockets are no longer IP44 (as with most 13 amp socket arrangements).
Key specs
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Input: 32A single phase
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Loop through: 32A single phase (feed additional units / expand)
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Outputs: 4 × 13A socket outlets (domestic)
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Indication: Green LED “power on”
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Enclosure: Impact resistant polypropylene
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IP rating: IP44 when covers are closed (not maintained when plugs are inserted)
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Best for: higher overall 13A demand from one supply (cabins, workshops, exhibitions, compounds)
