VEVOR 20x16x10 in NEMA 4X Steel Enclosure: features, specs and who it suits

The VEVOR 20 x 16 x 10 in steel enclosure (model JSTCDQX) is a wall-mount box for housing electrical components such as terminals, controls, relays and wiring. It has a hinged, lockable door, a rubber gasket and a removable mounting plate, and VEVOR lists it for indoor and outdoor use.

What an enclosure does

An enclosure protects wiring and equipment from dust, moisture and accidental contact, and keeps them in one place. The size, 20 x 16 x 10 in (about 51 x 41 x 25 cm), gives room for a panel of components with space for wiring. The depth of 10 in matters because breakers, drives and contactors all have their own depth.

NEMA and IP codes

The listing refers to NEMA 4X and to IP codes, and it is worth understanding them.

• NEMA 4X is a North American enclosure type, generally covering protection against rain, hose-directed water, windblown dust and corrosion.
• IP codes are an international scheme. The first digit covers solid objects and dust, the second covers water. IP65 is dust-tight and protected against water jets, and IP66 is protected against powerful jets.

The listing gives IP66 in the title and IP65 in the feature text, so look for the code marked on the product or in its documentation before relying on either number. Any protection class also depends on installing the box correctly, with suitable fittings in the cable entries.

Construction

The box is made of precisely cut and welded carbon steel, finished in an epoxy polyester powder coating, which VEVOR says helps with wear resistance and rain. Carbon steel with a coating is strong, but a scratch through the coating can rust, so touch up any damage, especially after drilling. Stainless enclosures cost more and resist corrosion better in harsh settings, but that is outside this listing.

Door, lock and seal

VEVOR lists a lock with a precision core and a high-strength hinge intended to withstand being pressed or squeezed. A rubber sealing strip runs round the door to keep out rainwater, and an earthing screw is provided for bonding the box. Earthing and bonding must be done to local electrical rules by a qualified person.

Mounting

A removable galvanised backplate carries the components, so you can fit and wire them on the bench and then slide the plate into the box. There are four mounting holes on the back for fixing it to a wall, and VEVOR says the accessories are included.

Where it is used

The listing names factories, construction sites, shopping centres, squares, residential areas and courtyards, and mentions industrial equipment. In general, boxes like this house control panels, outdoor power connections, irrigation and pump controls, and automation projects.

What to check before you buy

• Internal space: lay out your components and allow room for wire bending and heat.
• Protection class: check the NEMA or IP class that your installation actually requires, and confirm it on the product.
• Cable entries: you will need to drill or punch holes, and the fittings you use must keep the seal.
• Wall strength: a fully loaded steel box is heavy. Use fixings suited to the wall.
• Codes and manual: electrical work should follow local codes and the manual, and may need a licensed electrician.
• Heat: powered equipment generates heat, and a sealed box has limited ventilation.

The short version

• A 20 x 16 x 10 in carbon-steel enclosure with an epoxy polyester powder coating.
• Hinged lockable door, rubber seal and earthing screw.
• Removable galvanised mounting plate and four wall-mount holes.
• Listed as NEMA 4X with IP65/IP66 codes, so verify the marking.
• Install to local electrical codes.

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