Enclosure accessory Rittal SZ 2899.400 white plastic stepped gland for wall thickness 1.5–4.5 mm

The Rittal SZ 2899.400 is a plastic stepped cable gland designed for cable entry through panels with wall thicknesses from 1.5 to 4.5 mm. It is supplied in white and can be trimmed to match the cable diameter: simply cut the stepped sections to the required level so the gland fits the cable and panel opening.

Advantages

The stepped design allows a single gland to accommodate several cable diameters by cutting to the appropriate level. Made of plastic, the unit is lightweight and resistant to corrosion. Its white finish provides a neutral appearance suitable for many enclosures and control cabinets.

Suitable for

• Cable entry into electrical enclosures and control cabinets
• Applications with panel wall thickness from 1.5 mm to 4.5 mm
• Situations requiring a low-cost, adjustable cable gland for different cable diameters

When it may not be suitable

This stepped cable gland is not intended for sealing requirements where IP-rated or heavy-duty environmental protection is required; it is a simple adjustable entry and does not provide guaranteed ingress protection levels unless additional sealing measures are applied. It is also not suitable for very thick panels beyond 4.5 mm or for applications requiring metal glands for enhanced mechanical strength or EMI shielding.

Key specifications

• Material: plastic
• Colour: white
• Panel wall thickness compatibility: 1.5–4.5 mm
• Adjustable/stepped design for cutting to required cable diameter

How to use

Drill the appropriate hole in the panel. Insert the stepped gland into the hole and, if necessary, trim the stepped sections with a sharp tool to match the cable diameter so the gland sits flush in the panel and grips the cable. Ensure the cut is clean and the remaining steps provide secure support for the cable. If additional sealing or strain relief is required, apply appropriate grommets, sealant, or a backing washer as needed.

What to consider before purchase

• Required panel wall thickness (must be between 1.5 and 4.5 mm)
• Range of cable diameters you need to accommodate and whether trimming will achieve a proper fit
• Need for environmental sealing or mechanical strength beyond what a plastic stepped gland provides

Usage recommendations

For reliable installation, test the gland on a spare panel piece to determine the correct cutting level for your cable diameter and verify fit before final assembly. Consider adding external sealing or strain relief if the installation is exposed to moisture or mechanical stress.