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Outdoor & IP-Rated Boxes

Outdoor and IP-rated boxes are weatherproof enclosures that house electrical connections, junctions and cable entries outdoors, rated from IP55 to IP68. Knightsbridge supplies IP66 polycarbonate enclosures in small, medium and large sizes, an IP68 gel junction box, an IP68 inline gel box and an IP68 connector box. Mercury adds an IP55 weatherproof electrical box with 9 M20 knockouts.

Choosing Outdoor & IP-Rated Boxes

An outdoor electrical box is an enclosed box that houses electrical connections and keeps out the weather, from the IP55 Mercury 429.920UK to the IP68 Knightsbridge gel boxes. Pick one by the job: an enclosure for connections, junctions and cable entries, a gel box for a junction in the cable run, or a connector box for a repair or an extension.

ModelTypeRatingSize or fitting
JB007BKSmall outdoor enclosureIP66 / IK0686 × 74 × 62 mm
JB008BKMedium outdoor enclosureIP66 / IK06125 × 86 × 62 mm
JB009BKLarge outdoor enclosureIP66 / IK06181 × 111 × 100 mm
JB00143-way gel junction boxIP68Prefilled with gel, with a lever connector
JB0016Inline gel boxIP683-way lever connector and sleeves
JB004Connector boxIP683-terminal strip connector inside
429.920UKWeatherproof electrical boxIP559 × M20 knockouts

Enclosures for connections and cable entries

The JB007BK, JB008BK and JB009BK use impact-resistant polycarbonate, and the JB007BK is built to host connections, junctions and cable entries safely. The three share the same IP66 and IK06 ratings and differ in size.

Gel boxes for cable junctions

The JB0014 is a 3-way junction box in PA66, supplied prefilled with gel and with cable sleeves and a lever connector. The JB0016 is an inline gel box in PA66 with silicone sealing gaskets, for secure outdoor connections on H07RNF cables, and it comes with sleeves and a 3-way lever connector.

Connector box for repairs and extensions

The JB004 suits repairs and extensions. It has a polycarbonate housing with a silicone sealing gasket for weather resistance and a 3-terminal strip connector mounted inside, and it is certified to EN 50262.

Mercury 429.920UK for sheltered spots

The Mercury 429.920UK is IP55 rated for use outdoors in sheltered locations.

Related categories

See junction boxes, cable glands and connectors, outdoor sockets and back boxes and pattress boxes.

Brands we stock in Outdoor & IP-Rated Boxes

Knightsbridge and Mercury.

Frequently asked questions

What is an IP rated enclosure?

An IP rated enclosure is a housing tested to keep out dust and water to a set level, shown by its IP code. The first digit rates protection against solids and dust, and the second against water, so IP66 usually means the box resists powerful water jets. Enclosures can also carry an IK rating for impact. The range here includes IP55, IP65, IP66 and IP68 rated boxes.

What IP rating does an outdoor electrical box need?

An outdoor electrical box should usually be rated at least IP65 where it is exposed to rain and hosing, while IP55 can suit a sheltered spot under cover. Choose IP68 for a junction that may sit in standing water. Check the cable entries are sealed to the same standard. The range here includes an IP55 box for sheltered spots and IP66 enclosures.

How does a waterproof outdoor junction box work?

A waterproof outdoor junction box typically joins cables inside a sealed housing, using gaskets, cable glands or a gel filling to keep water away from the connections. Gel boxes surround the terminals with gel, which suits joins in exposed or damp cable runs. Check the box suits the cable size and type. The range here includes IP68 gel junction boxes and a connector box.

How do you cover or hide an outdoor electrical box?

You can hide an outdoor electrical box with planting, a slatted screen or a cover set slightly away from it. Keep the box easy to reach so its lid can open, and never seal it in or block its drainage or ventilation. A supplier's meter box needs to stay accessible for readings. A compact enclosure is also less noticeable. The range here includes small and medium IP66 enclosures.

What is an outdoor electrical box?

An outdoor electrical box is a weatherproof enclosure that protects cable joints, connections or small devices outside a building, for example for garden lighting, gates or external sockets. It is usually made of polycarbonate or metal, with knockouts or gland entries for cables. The range here includes outdoor enclosures, gel junction boxes and modular weatherproof enclosures.

Why buy from West Midlands Electrics

  • Established 1975
  • Birmingham trade counter
  • UK-only supply

Written by the West Midlands Electrics technical team

Updated