Hydraulic Hand Punch Rittal 4055080 — hand-operated hydraulic punch for electrical enclosures, compatible punch sizes 16–40 mm

Rittal 4055080 is a hand-operated hydraulic punch designed to create clean, precise round openings in electrical enclosures and panels. The tool is supplied as a hand-hydraulic unit with interchangeable punch sizes that correspond to common conduit and cable gland diameters (16, 20, 25, 32 and 40 mm). It delivers controlled hydraulic force for burr‑reduced cuts and is intended for on-site knockout work and retrofit installations where accuracy and finish quality matter.

Advantages

The hydraulic hand punch provides consistent hole quality with minimal deformation of thin sheet metal and reduces the need for secondary deburring. Its hand-operated hydraulic mechanism offers high cutting force without requiring powered equipment, making it suitable for locations without mains power. The set’s range of punch diameters covers common conduit and gland sizes, enabling versatility across typical electrical installation tasks.

Suitable for

• Creating round knockouts in electrical enclosures and control panels
• On-site installation and retrofit work where clean, repeatable holes are required
• Work with sheet metal panels used in industrial and commercial electrical cabinets
• Situations where mains-powered tools are impractical or unavailable

When it may not be suitable

The hydraulic hand punch is designed for cutting round openings in thin to moderate thickness sheet metal commonly used in enclosures; it is not intended for heavy structural steel or very thick plates. For very large diameter holes beyond the supplied punch sizes or for materials with specialized coatings where cutting could damage the finish, alternative methods or larger tooling may be more appropriate.

Key specifications

• Punch diameter range: 16 mm, 20 mm, 25 mm, 32 mm, 40 mm
• Operation: hand-operated hydraulic mechanism providing high cutting force
• Intended material: sheet metal panels typical for electrical enclosures
• Cut quality: burr-reduced, clean round openings
• Mounting angle: 90° orientation suitable for standard panel faces

How to use

Select the matching punch diameter for the required conduit or gland size, position the enclosure panel between the punch and die, and align the cutting edge accurately with the intended hole location. Operate the hand hydraulic pump to advance the punch through the sheet metal until the hole is completed. Release the hydraulic pressure according to the tool’s instructions, remove the punched slug and inspect the edge for proper fit. Typical use does not require mains power and is suitable for repeated operations on-site.

What to consider before purchase

• Ensure the supplied punch diameters (16, 20, 25, 32, 40 mm) match the conduit or gland sizes you will use
• Verify the tool’s suitability for the thickness and type of sheet metal in your enclosures
• Confirm that a 90° punch orientation is compatible with your panel mounting and access constraints
• Plan for storage of punched slugs and safe handling during on-site use

Usage recommendations

For best results, clamp the panel securely and use appropriate dies for the selected punch diameter to maintain concentricity and edge quality. Regularly inspect and maintain cutting edges and hydraulic seals to ensure consistent performance when using the Rittal hand-operated hydraulic punch.