| 15 A compact contact | 16–20 AWG (about 0.5–1.5 mm²) | Crimped onto a stripped conductor | Low-current DC wiring and compact equipment connections | Contact compatibility, correct crimp-tool profile, and conductor fit |
| 30 A compact contact | 12–14 AWG (about 2.5–4 mm²) | Crimped onto a stripped conductor | Medium-current wiring where a compact connector is preferred | Wire-size range, contact retention, and the connector housing’s rated limits |
| 45 A compact contact | 10–12 AWG (about 4–6 mm²) | Crimped onto a stripped conductor | Higher-current circuits using a small-format connector | Strand compatibility, crimp quality, and allowable operating temperature |
| 50 A-class contact | Commonly sized for approximately 6 AWG (about 13.3 mm²); verify the exact contact | Crimped or, where specified, soldered | General-purpose battery and power leads | Supported cable range, contact material, plating, and mating-housing fit |
| 75 A-class contact | Often used with approximately 6 AWG (about 13.3 mm²); verify the exact contact | Crimped or, where specified, soldered | Power connections requiring a larger contact interface | Rated current under the intended conditions, cable entry size, and insertion force |
| 120 A-class contact | Commonly associated with approximately 2 AWG (about 33.6 mm²); verify the exact contact | Heavy-duty crimp or manufacturer-specified termination | High-current battery, inverter, and industrial DC connections | Conductor fit, tooling availability, contact temperature rise, and housing compatibility |
| 175 A-class contact | Commonly associated with approximately 1/0–2 AWG (about 33.6–53.5 mm²); verify the exact contact | Heavy-duty crimp or manufacturer-specified termination | High-current equipment and larger DC power leads | Exact wire range, crimp tooling, cable flexibility, and system-level current rating |
| Important: Current classes and wire-size examples are indicative, not interchangeable specifications. Actual ratings depend on the exact contact and housing, conductor material, crimp quality, ambient temperature, duty cycle, and applicable regional requirements. Confirm the contact manufacturer’s datasheet before purchasing or installation. |