What Should Be Considered When Choosing Cold-pressed Terminals?

When selecting crimp contact, the key points are matching the wire specifications, ensuring the electrical parameters meet the requirements, and using the corresponding specialized crimping tool to guarantee the mechanical strength and electrical continuity of the connection.
1. Matching Wire Specifications
Wire Cross-sectional Area (AWG/mm²): This is the most critical parameter. crimp contact pin must perfectly match the cross-sectional area of ​​the wire you are using. For example, a 1.5mm² wire requires a 1.5mm² contact socket crimp (usually indicated on the insulation sleeve, such as red for 0.5-1.5mm²).
Pin Diameter and Length: Confirm that the diameter and length of the metal pin part of the crimp contact female can fit the terminal block or device socket you are inserting it into.
2. Electrical Performance Requirements
Rated Current and Voltage: The rated current and voltage of the selected crimp contact male must be higher than or at least equal to the system's nominal maximum current and voltage. It is generally recommended that the terminal's rating be at least 150% of the system's maximum current.
Material and Surface Treatment: Most crimp socket contact are made of copper, and the surface is usually tin-plated to improve corrosion resistance and reduce contact resistance. In special or corrosive environments, material selection (such as silver plating) may require more stringent considerations.
3. Insulation Type
Pre-insulated Type: With a colored plastic (PVC or nylon) insulation sleeve, which helps to distinguish wire sizes and provides additional insulation protection and aesthetics.
Bare Terminals: Without an insulation sleeve, more compact, often used in space-constrained situations or where additional sleeving (such as heat shrink tubing) is required for protection.
4. Crimping Tool Matching
Tool and Terminal Matching: A specialized crimping tool (crimping pliers or automatic crimping machine) that matches the female crimp contact model and wire size must be used.
Ensuring Crimping Quality: Correct crimping ensures mechanical strength and reliable electrical connection, similar to "cold welding." After crimping, check that the connection is tight and there is no looseness.
By following these precautions, you can ensure that the male crimp contact connection is safe, reliable, and stable.