Rittal AS 4055.743

The Rittal AS 4055.743 is a red stamp set component used with compatible dies to punch round holes in busbars. It supports producing precise circular openings with diameters in the range typically used for electrical connections and busbar assemblies.

Advantages

This stamping component is supplied in a red finish and is lightweight for handling in workshop and assembly environments. It is designed to work with matching dies to deliver clean, repeatable round holes in conductive busbar material, helping to ensure consistent fit for terminals and fasteners.

Suitable for

• Punching round holes in copper or aluminum busbars
• Preparing busbars for mounting terminals, bolts, or rivets
• Electrical panel and switchgear assembly work

When it may not be suitable

This stamp is intended to be used together with appropriate dies; it is not a stand-alone holemaking tool. It may not be suitable for very thick or hardened materials outside the die’s rated capacity, or for non-metal materials that require different tooling methods.

Key specifications

• Colour: red
• Weight (approx.): 555 g (package weight)
• Compatible with round hole dies for diameters from 6.6 mm to 21.5 mm when used as part of a die-and-stamp set

How to use

Install the matching die into the punching tool and fit this stamp according to the tool manufacturer’s instructions. Position the busbar accurately, align the tool and apply force or actuate the punch mechanism to create the round hole. Verify hole dimensions and fit for the intended fastener after each operation.

What to consider before purchase

• Ensure compatibility with your punching tool and the specific dies required for the target hole diameter
• Confirm the material type and thickness of your busbars fall within the die and punch rated capacity
• Check that the hole diameter range (6.6–21.5 mm) meets your application requirements

Usage recommendations

Use with the correct dies and follow the tool manufacturer’s safety and operating instructions. Inspect dies and the stamp for wear and replace components as needed to maintain hole quality and safe operation.