In professional control panel wiring, the quality of each termination directly affects system reliability. Loose strands from a poorly terminated wire can cause intermittent signals, overheating, or even short circuits. The QUADRIOS 201711C002 provides a complete inventory of wire end ferrules – both insulated and non-insulated – to ensure every screw terminal connection is solid and durable.

Why Both Insulated and Non-Insulated?

Insulated ferrules (with colored polyamide collars) are the standard choice for most terminal blocks. The collar prevents the ferrule from slipping too far into the terminal and provides finger-safe protection against accidental contact with adjacent terminals. Non-insulated ferrules, on the other hand, are used where space is extremely tight or where the terminal block itself has built-in barriers. They also allow visual inspection of the crimp quality since the copper barrel is fully exposed.

Professional tip: For PLC I/O cards and relay terminals, always use insulated ferrules with the correct DIN color code. This allows maintenance technicians to instantly identify wire gauge without looking up documentation.

Kit Composition and Color Coding

The non-insulated portion includes 500 pieces each of 0.5, 0.75, 1.0, and 1.5 mm² – four of the most common signal and control gauges. The insulated portion follows DIN color coding conventions for easy size identification.

All ferrules are made from tin-plated copper for corrosion resistance and low contact resistance. The insulated ferrules use polyamide (PA) insulation rated for temperatures up to 105°C. The transparent assortment case keeps everything organized and visible. This kit eliminates the need to buy separate small packs – one box covers the vast majority of terminal block work in industrial control panels, motor control centers, and power distribution units.