| A | What types of terminals and lugs do you supply? |
Q
| Our terminal and lug product range includes copper cable lugs (DT series), aluminum cable lugs (DL series), copper-aluminum bimetallic lugs (DTL series), pin terminals, ring terminals, fork terminals, bullet terminals, insulated terminals (pre-insulated), non-insulated terminals, ferrules, and terminal blocks. We also offer compression tools and crimping pliers for installation. |
| Q | What materials are your terminals made of? |
| A | Copper terminals are made of high-purity electrolytic copper (T2) with tin plating for corrosion protection. Aluminum terminals are made of pure aluminum (L3) or aluminum alloy. Bimetallic terminals use a friction-welded copper-aluminum joint to ensure reliable connection between copper cables and aluminum busbars, eliminating galvanic corrosion. |
| Q | What is a copper-aluminum bimetallic lug and when is it used? |
| A | A copper-aluminum bimetallic lug (DTL series) has a copper barrel that connects to the copper cable and an aluminum palm that connects to the aluminum busbar, joined by friction welding. It is used when connecting copper cables to aluminum equipment or busbars, preventing the galvanic corrosion that occurs when copper and aluminum contact directly. |
| Q | What wire sizes are your terminals suitable for? |
| A | Our terminals cover a wide range of cable cross-sections from 1.5mm² up to 1000mm² for copper lugs, and from 10mm² up to 800mm² for aluminum lugs. Standard stud hole sizes include M6, M8, M10, M12, M14, M16, M18 and M20. Custom sizes and hole configurations are available upon request. |
| Q | How do I select the correct terminal for my cable? |
| A | To select the correct terminal, you need to know: (1) the cable conductor material (copper or aluminum), (2) the cable cross-sectional area (mm² or AWG), (3) the stud or bolt size of the connection point, (4) the installation environment (indoor/outdoor, temperature, corrosion level), and (5) whether insulation is required. Our sales team can help you select the right terminal based on these parameters. |
| Q | What is the difference between DT, DL and DTL lugs? |
| A | DT lugs are pure copper lugs for copper conductors. DL lugs are pure aluminum lugs for aluminum conductors. DTL lugs are copper-aluminum bimetallic lugs for connecting copper conductors to aluminum busbars or equipment. Choosing the correct type ensures reliable, corrosion-free connections. |
| Q | Do you provide crimping tools for your terminals? |
| A | Yes. We offer a range of crimping tools including hand crimping pliers for small terminals (0.5-16mm²), hydraulic crimping tools for medium to large lugs (16-300mm²), and battery-powered crimping tools for high-volume installation. We can recommend the appropriate tool based on your terminal range and application. |
| Q | Are your terminals suitable for marine and outdoor applications? |
| A | Yes. For marine, outdoor and corrosive environments, we recommend tin-plated copper terminals or heat-shrink insulated terminals which provide superior corrosion protection. We can also supply terminals in stainless steel or with additional protective coating for extreme environments. |
| Q | Do you provide certification for your terminals |
| A | Yes. Our terminals comply with GB/T 14315 and IEC 61238-1 standards. We can provide CE certification, RoHS compliance documents and test reports for major product lines. Third-party testing can be arranged upon request. |
| Q | Can you provide terminal blocks and connectors |
| A | Yes. Established in 2004, Yaogu has more than 20 years of experience in electrical products and international trade, serving customers across global markets. Our team supports product selection, specification confirmation, custom production, quality inspection, export packaging, shipping coordination, technical documentation, and after-sales service. |
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