Crimp Ferrules Rittal 4050.731 partially insulated 0.75 mm² grey, pack of 500

Rittal 4050.731 partially insulated crimp ferrules for 0.75 mm² conductors are designed to provide reliable termination of stranded wires in screw terminals and terminal blocks. Supplied in grey and packed in quantities of 500, these ferrules combine a metal sleeve for secure conductor compression with a short insulation collar that protects against short circuits and improves handling during insertion. They are intended for industrial and electrical installation use where consistent contact and prevention of strand fraying are required.

Advantages

These partially insulated ferrules increase the mechanical stability and electrical reliability of terminated stranded conductors by concentrating the strands into a compact sleeve, which reduces the risk of loose strands and poor contact. The short insulation collar offers basic protection against accidental shorts and helps guide the ferrule into the terminal, while the uniform sleeve dimensions support repeatable crimp quality when used with suitable crimping tools. Supplied in a bulk pack of 500, they are convenient for larger installation or assembly tasks.

Suitable for

• Termination of flexible stranded conductors with nominal cross-section 0.75 mm²
• Screw terminals and terminal blocks in control cabinets and distribution panels
• Electrical installations where vibration resistance and long-term contact reliability are required
• Pre-assembly and mass wiring tasks in industrial or commercial projects

When it may not be suitable

These ferrules are sized specifically for conductors with a nominal cross-sectional area of 0.75 mm²; they will not provide correct fit or contact for conductors of significantly different gauge. They are partially insulated with a short collar and therefore do not replace fully insulated terminations where extended insulation length or higher voltage clearance is required.

Key specifications

• Nominal conductor cross-section: 0.75 mm²
• Type: partially insulated crimp ferrule (metal sleeve with short insulation collar)
• Colour: grey (insulation collar)
• Pack quantity: 500 pieces
• Intended use: stranded conductor termination for screw/terminal block connections

How to use

Strip the conductor to the appropriate length so that only bare strands enter the metal sleeve. Insert the stranded conductor fully into the ferrule sleeve until the insulation collar meets the cable insulation. Use a suitable crimping tool matched to 0.75 mm² ferrules to perform a single, full crimp ensuring uniform compression of the sleeve. After crimping, insert the ferrule into the terminal and tighten the screw to the recommended torque for the terminal to ensure a secure electrical and mechanical connection.

What to consider before purchase

• Confirm conductor cross-section is 0.75 mm² to ensure proper fit and contact
• Choose appropriate crimping tool dies rated for ferrules of this size to achieve reliable crimps
• Verify whether partial insulation meets your clearance and insulation requirements or if fully insulated ferrules are needed

Usage recommendations

Use a calibrated crimping tool and check a sample crimp for mechanical pull-out and electrical continuity before mass installation. Store the ferrules in a dry environment and handle them with clean stripped conductors to maintain reliable contact quality.